Durabilt USA








STATIC LOAD – The load resulting from a constantly applied force or load.

WORKING LOAD LIMIT-The maximum mass or force which the product is authorized to support in general service when the pull is applied in-line, unless noted otherwise, with respect to the centerline of the product. This term is used inter-changeably with the following terms:


NEVER EXCEED ANY WORKING LOAD LIMIT (W.L.L.) of any DURABILT product, as you will be putting yourself and others at RISK which may result in SERIOUS INJURY or DEATH.

PROOF LOAD – The average force applied in the performance of a proof test; the average force to which a product may be subjected before deformation occurs.

PROOF TEST – A test applied to a product solely to determine non-conforming material or manufacturing defects.

MINIMUM BREAK STRENGTH (M.B.S.) – the maximum load or force applied to the product at which point the product fails to support the load, also known as MINIMUM BREAK LOAD.

SHOCK LOAD – A force that results from the rapid application of a force (such as impacting or jerking) or rapid movement of a static load. A shock load significantly adds to the static load.

DESIGN (SAFETY) FACTOR – Is a term denoting our product’s theoretical reserve capability, usually computed by dividing the Minimum Breaking Strength by the Working Load Limit. Generally these products have a minimum ratio of 3 to 1.

SPECIAL NOTE: The Durapullers (DP-T2, DP-T4, DP-T8) have a 2 to 1 ratio between the Capacity/Minimum Break Strength and the Working Load Limit.



  • Read and understand all instructions and warnings before operating this load binder
  • Never exceed WORK LOAD LIMIT (W.L.L. – W.L. LIMIT, or S.W.L. – Safe Working Load) as identified on products or any Durabilt Media.
  • Failure to use these load binders properly may result in property damage, serious injury or death.
  • You must be familiar with STATE and FEDERAL regulations regarding the size and grade of chain being used as well as the number of tie-downs required for securing your load.
  • It is critical to follow D.O.T. (Department of Transportation) Federal Motor Safety regulations as directed in parts §392.9, §393.7(b), §393.100 and §393.102 through §393.136 (where applicable).
  • Move handle with caution – it may whip. Always keep yourself out of the path of the moving handle. (AGAIN – Keep your head and face out of path of handle.)
  • Never use handle extenders (cheater pipes). The use of handle extenders may overload the load binder or chain resulting in failure or deformation of the product.
  • Always load or release lever binder handle in a direct manner – straight line (hook to hook). Never side-load handle. NOTE: Mechanical advantage: Lever Binder 25 to 1, Ratchet Binder 50 to 1 (use as multiple per one pound of force applied.)
  • Durabilt will not be responsible for any modification of our products. This will be at the end-users own risk.
  • Do not operate load binders while standing on the load. Always operate load binders while standing on the ground with secure footing.
  • Do not operate load binders on slick surfaces.
  • Use only the correct size and grade of chain with the proper load binder(s).
  • Secure handle in the locked position prior to transport to prevent possible load release due to road vibration or load shifting while in transit. Be sure to check load periodically to assure chain binders are locked tight against load. (see FMCSA regulation §392.9)
  • Lever binder Release: Note that there is stored energy in the secured chain which will be released through the handle causing it to “kick-back”. A steel bar should be placed under the handle for prying or use an opened hand in the same manner but be sure to keep body clear of handle path.
  • Always consider the safety of nearby workers as well as yourself when operating a load binder or any other product of Durabilt Dyvex,Inc.
  • DO NOT discard these warnings and instructions. Keep them and share them with others who may be using Durabilt load binders.


  • Routinely inspect load binders for wear, bending, cracks, gouges and clevis spreading. (Do not use the load binder if any of the above are present)
  • Routinely lubricate pivot and swivel points of lever binders as well as pawl part and screw threads of ratchet binders for reduction of friction and extension of product performance.



Remember that ALL strap assemblies or tie-down systems (i.e. winch binder) are only as strong as their weakest components including the point and method of attachment. Working Load requirements should be evaluated by the user before selecting appropriate hardware and strap assemblies. All worn products should be replaced immediately.

WARNING: When tightening or loosening winches, always be sure to maintain a firm grip on the winch bar. NEVER release a winch bar without checking the pawl to ensure that it is fully engaged between the ratchet teeth. If you release the winch bar without the pawl being properly engaged, you could cause serious injury to yourself or to bystanders. Use only winch bars that are designed and marketed to use for Durabilt winch binders. Never use winch bars as “Cheater Bars” or “Handle Extenders” for lever or ratchet type binders. You should stay clear of the winch bar handle during its operation. During adverse weather conditions, these bars may tend to slip. Be sure to maintain good footing and hold bars firmly. The tip of the winch bar should be fully inserted through the front and back hole of the winch binder to prevent the winch bar from slipping out or over the winch bar tip. Winches should not be loaded in excess of their Working Load Limit (W.L.L.) or their components. (W.L.L.) Winches should never be used as lifting or pulling devices.

INSTALLATION WARNING: Webbing should be inserted through the slot of the mandrel with a minimum of 12″ of the webbing being inserted through the slot, and a minimum of two (2) complete wraps of the webbing should be placed around the winch mandrel.

CAUTION: Excessive wraps of webbing around the mandrel will reduce the Working Load Limit, WLL) of the winch.


Set screws on portable winch binders are designed to position the winch while the tie-down assembly is being tightened. The screws (2 each) should be snuq-tight only. Over tightening of the screws will cause the bracket-frame to bend and will weaken the winch causing failure, which may result in injury. Portable winches shall be removed when not in use.



A potential risk may occur when lifting or dragging loads with pulley block assemblies.

  • Failure to use pulley block systems properly will cause load to slip or fail. The result may be serious injury or death.
  • Instruct workers to stay alert and to wear correct safety gear in areas where loads are moved or supported with pulley block systems.
  • Do not use these products for overhead lifting.
  • Do not side load pulley blocks.
  • Do not exceed working load limit.
  • Tackle block systems should be rigged by a qualified person as defined by ANSI/ASME B.30.



• Do not exceed Working Load Limit.

• Do not pull cable across any other surface.

• Do not use this product as a choker.

• Do not use product as tow line or load binder.

• Do not support human cargo with this product.

• Do not use product if cable wire is rusted or kinked.

• See advising Working Load Limit (W.L.L.).

• Do not fail to check product for damaged or worn parts before each use and if necessary – replace.           




  • DO NOT use a shackle without training.
  • ALWAYS Ask your employer for Shackle Safety use instructions.
  • ALWAYS comply with applicable Federal and local regulations.
  • ALWAYS know shackle load.
  • Do Not use a shackle without a legible product identifier.
  • Do Not ride on shackle or load.
  • Do Not overload a shackle.
  • Do Not rig a shackle to a load improperly.
  • Do Not use a damaged or worn-out shackle.
  • Do Not use a shackle in extreme temperatures.
  • Do Not use a shackle in acidic conditions.

Do Not use a shackle without training.

OSHA regulation requires responsible work practice. (SHA1926.20) & (ASME830.26-2004)

Always inform yourself.

Ask your employer for shackle safe use instruction. OSHA1926.2.1

Shackle requirements depends on application.

Always comply with applicable Federal and local regulations… Federal and local regulations govern worksite activity. Contact OSHA 800-321-6742

Understand all governing laws and safety standards before use of shackles. Always know shackle load.

“Fittings shall be…of a minimum breaking strength equal to that of the sling…” -OSHA 1910.1840)(3)(1).

Do Not use a shackle without legible product identification.

Identification is required to ensure proper application. Shackle identification should be maintained by the user so as to be legible throughout the life of the shackle.” -ASME B26-1.5.3

Do Not ride on shackle or load.

Sling use regulation requires: “All employees shall be kept clear of loads about to be lifted and of suspended loads” – OSHA 1910.184 © (9).

SEE ASME 830.26-1.9.2(a)”

Do Not overload a shackle.

Understand working load limits. Required strength depends on application. The rated load (WLL) of the shackle shall not be exceeded – ASME B30.26-1.9.1(b). If the shackle is to be side-loaded then the rated load shall be reduced in accordance with figure.

Do Not rig a shackle to a load improperly.

To avoid dropped loads and shackle damage. Avoid side loading shackle when possible. The screw pin shall be fully engaged, with the shoulder in contact with the shackle body. The screw pin shackle shall not be rigged in a manner that would cause the pin to unscrew.

Do Not use a damaged or worn out shackle.

A visual inspection of the shackle shall be performed by a designated person each day before the shackle is used. A complete periodic inspection shall be performed by a designated person as prescribed in ASME B30.26-1.8.3

Shackles should be removed from service if damage such as the following is visible:

  • missing or illegible manufacturer’s name or rated load.
  • indications of heat damage, weld spatter or arc strikes.
  • excessive pitting or corrosion.
  • bent, twisted, distorted, stretched, elongated, cracked, or broken load bearing components.
  • excessive nicks or gouges.
  • a 5% reduction of the original or catalog dimension at any point around the body or pin.
  • incomplete pin engagement
  • excessive thread damage
  • evidence of unauthorized welding

The return to service should only be approved by a qualified person.

Do Not use a shackle in extreme temperatures. W.L.L. shall be reduced in accordance with the following chart when heated between 400°F and 750°F and should be permanently removed from service if heated above 750°F.

Do Not use a shackle in alkaline or acidic conditions

Lifting shackles shall not be used in alkaline or acidic conditions. Resulting metal embrittlement and accelerated corrosion can cause sudden failure.



Read and follow all use and safety information provided with any sling. Failure to do so may result in severe INJURY or DEATH due to sling failure and/or loss of load.

The following six points briefly summarize some important safety issues and are further elaborated below:

1. Sling Users Must Be Trained – All users must be trained in sling selection, use and inspection, cautions to personnel, environmental effects and rigging practices.

2. Inspect sling for damage – Inspect sling for damage regularly, if the sling is damaged, remove it from service.

3. Prevent Sling Damage – Protect sling from damage. ALWAYS protect slings in contact with edges, corners, protrusions, abrasive surfaces with materials of sufficient strength, thickness and construction to prevent damage.

4. Use Sling Safely – Do not exceed a sling’s rated capacity. Always consider the effect of sling angle and tension on the sling’s rated capacity.

5. Be Alert When Lifting Loads – Do not stand on, under or near a load with the sling under tension. All personnel should be alert to danger of falling and/or uncontrolled load, sling tension and the potential for snagging.

6. Sling Care & Storage – Maintain and store RoundSlings properly. Slings should be protected from mechanical, chemical and environmental damage.

1 – Sling Users Must Be Trained

This warning label does not contain all the information you need about sling safety. All sling users must be:

  • Trained in sling selection and inspection, hazards to personnel, environmental effects and rigging practices
  • Knowledgeable about the safe and proper use and application of slings
  • Thoroughly familiar with the manufacturer’s recommendations and safety materials provided with each product
  • Aware of their responsibilities as outlined in all applicable standards and regulations

2 – Inspect Sling for Damage

The entire Web Sling or RoundSling must be inspected before each shift or day in Normal service and before each use in Severe service applications. It shall be removed from service if ANY of the following are detected:

  • If sling identification tag is missing or not readable
  • Holes, tears, cuts, snags, or embedded materials
  • Broken or worn stitches in the load bearing splices
  • Knots in any part of the sling webbing
  • Acid or alkali burns
  • Melting, charring or weld spatters on any part of the web sling
  • Excessive abrasive wear or crushed webbing
  • Signs of ultraviolet light (UV) degradation
  • Distortion, excessive pitting, corrosion or other damage to fitting(s)
  • If provided, exposed red core yarn. However if damage is present and reds yarns are not exposed – DO NOT USE THE SLING
  • Any conditions which cause doubt as to the strength of the web sling

To detect possible damage, perform a visual inspection and also feel along the entire length of the sling. Even damage that looks or feels “minor” can significantly degrade sling performance. If you have ANY doubts about the condition of a sling, DO NOT USE IT. Never attempt to repair a damaged sling (i.e. Tie knots in the webbing, etc).

3 – Prevent Sling Damage

Synthetic slings can fail if damaged, abused, misused, overused or improperly maintained. Avoid any action that could cause the types of damage listed in the previous section and take steps to prevent sling damage, including:

  • Web Slings & RoundSlings must ALWAYS be protected from being cut or damaged by corners, edges, protrusions or abrasive surfaces with protection sufficient components, materials or techniques for the intended purpose (For RoundSlings, see Synthetic RoundSling Safety Bulletin (WSTDA-RSSB-1)
  • Do not drop or drag slings on the ground, floor or over abrasive surfaces
  • Do not pull slings from under loads when the load is resting on the sling – place blocks under load if feasible
  • Web slings shall not be twisted, shortened, lengthened, tied into knots or joined by knotting
  • Avoid twisting or kinking sling legs
  • Avoid exposing slings to damaging acids or alkalis
  • Never use or allow exposure to temperatures above 194ºF (90ºC) or below -40ºF (-40ºC)
  • Center sling in the base or “bowl” of a hook to prevent “tip loading”
  • Avoid using hooks, shackles or other hardware that have edges or surfaces that could damage sling
  • Do not run/drive over slings with vehicles or other equipment

4 – Use Sling Safely

A competent and qualified sling user must consider all risk factors prior to lifting a load. User Must:

  • Determine the weight of the load and its center-of-gravity (CG)
  • Select a sling and hardware having suitable characteristics for the type, size and weight of the load, the type of hitch and the environment
  • Consult the manufacturer’s rated capacity tag and/or other materials to determine the reduction in capacity due to sling configuration and angle
  • Avoid accelerating or decelerating the load too quickly (i.e. “Shock Loading”)
  • Control the lift and load to prevent slipping, sliding and/or loss of the load
  • Use Sling for Lifting Load Only
  • Never use a sling for towing purposes
  • Never use a sling to pull on stuck objects

5 – Be Alert When Lifting Loads

When using slings, all personnel must be alert to potential risks:

  • Always stand clear of a lifted load and never be under, on or near a suspended load
  • No part of the body should be placed between the sling and load or between the sling and lifting hook
  • Personnel must be alert to the potential for the sling to become snagged during lifting – never use a web sling to pull on objects in a snagged or constrained condition

6 – Sling Care & Storage

When slings are not in use, they should be stored in a cool, dry and dark location. Slings should also be stored in an area free from environmental or mechanical sources of damage, such as: Weld spatter, splinters from grinding, machining, heat sources, UV or chemical exposure, etc.

Slings should be kept clean and free of dirt, grime and foreign materials. Mild soap and water can be used to clean slings, but be sure to let the sling dry completely before placing back in storage or use. Do not machine wash slings. Machine washing results in significant loss of sling strength.

If you want more information about Web Sling or RoundSling safety, contact WSTDA to obtain copies of the Synthetic Web Sling or RoundSling Safety Bulletin – a companion document to this labeling. (Web Sling & Tie-Down Safety Bulletins are also available).

©Web Sling & Tie-Down Association, Inc.


RSWT-1 2010




  • A potential hazard exists when lifting or dragging heavy loads with tackle block assemblies.
  • Failure to design and use tackle block systems properly may cause a load to slip or fall – the result could be serious injury or death. A tackle block system should be rigged by a qualified person as defined by ANSI / ASME 8.30.
  • Instruct workers to keep hands and body away from block sheaves and swivels – and away from “pinch points” where rope touches block parts or loads.
  • Do not Side-Load Weld-on or Drill-on tackle blocks. Read, understand, and follow these instructions to select, use and maintain tackle block systems.


For maximum safety and efficiency, tackle block systems must be property designed, used, and maintained. You must understand the use of tackle block components in the system. These instructions provide this knowledge. Read them carefully and completely. Parts of these instructions must use technical words and detailed explanations. NOTE: If you do not understand all words, diagrams, and definitions – DO NOT TRY TO USE A TACKLE BLOCK SYSTEM!


Tackle Blocks must be regularly inspected, lubricated, and maintained for peak efficiency and extended usefulness. Their proper use and maintenance is equal in importance to other mechanical equipment. The frequency of inspection and lubrication is dependent upon the frequency and periods of use, environmental conditions, and the user’s good judgment.

Inspection: At a minimum, the following points should be considered:

  1. Wear on pins or axles, rope grooves, side plates, bushings or bearings, and fittings.
  2. Excessive wear may be a cause to replace parts or remove blocks from service.
  3. Deformation in side plates, pins and axles, fitting attachment points, trunnions, etc.
  4. Deformation can be caused by abusive service and/or overload and may be a cause to remove block from service.
  5. Misalignment or wobble in sheaves.
  6. Security of nuts, bolts and other locking methods, especially after reassembly following a tear down inspection.
  7. Original securing method should be used, i.e. staking, set screw, cotter pin, cap screw.
  8. Deformation of corrosion of hook and nut threads.
  9. Surface condition and deformation of hook.
  10. Welded side plates for weld corrosion or weld cracking.
  11. Hook Latch for deformation, proper fit and operation.


The frequency of lubrication depend upon the frequency and period of product use as well as environmental conditions, which are contingent upon the user’s good judgment.

Assuming a state of normal product use, the following schedule is suggested when using lithium-based grease of a medium consistency:  Lubricate Bronze Bushings (Not Self-Lubricated) every 8 hours of continuous operation or every 14 days of intermittent operation.


The Working Load Limit (W.L.L.) for blocks indicates the maximum load that should be exerted on the block and its connecting fitting. This total load value may be different from the weight being lifted or pulled by a hoisting or hauling system. It is necessary to determine the total load being imposed on each block in the system to properly determine the rated capacity block to be used.

A single sheave block used to change load line direction, can be subjected to total loads greatly different from the weight being lifted or pulled. The total load value varies with the angle between the incoming and departing lines to the block. The following chart indicates the factor to be multiplied by the line pull, to obtain the total load on the block:

EXAMPLE 1 – “Angle Factor Multipliers”

Calculations for Determining a Total Load Value on a Single Line System are Shown Below with a Corresponding Image, i.e. A gin pole truck lifting 1,000 Lbs (Seen Below):

There is no mechanical advantage to a single part load line system, so winch line pull is equal to 1,000 Lbs. or the weight being lifted.

To determine the Total Load on Snatch Block – A:
A = 1,000 Lbs. X 1.84 = 1,840 Lbs.

(Line Pull)(Factor 45º Angle)

To determine the Total Load on Snatch Block – B:
B = 1,000 Lbs. X 0.84 = 840 Lbs.

(Line Pull)(Factor 130º Angle)

EXAMPLE 2 – “Mechanical Advantage”

The following is a calculation for determining the Total Load Value for a Mechanical Advantage System. As seen in the image below, there is a Hoisting System lifting 1,000 Lbs. using a traveling block. The Mechanical Advantage of the traveling block C is 2.00 because two (2) parts of the load line support the 1,000 Lbs. weight.

To Determine the Total Load on a Traveling Block – C:

C = 500 Lbs. x 2.0 = 1,000 Lbs.

(Line Pull)(Factor 0º Angle)

To Determine the Total Load on Stationary Block – D:

D = 500 Lbs. x 1.81 + 500 Lbs. = 1,405 Lbs.

(Line Pull)(Factor 50º Angle)(Dead End Load)

To Determine the Total Load on a Traveling Block – E:

C = 500 Lbs. x 0.52 = 260 Lbs.

(Line Pull)(Factor 150º Angle)

To Determine the Total Load on a Traveling Block – F:

C = 500 Lbs. x 1.29 = 645 Lbs.

(Line Pull)(Factor 100º Angle)



Webbing straps must be protected when used across rough or sharp objects. All strap assemblies require inspection each time they are used. Straps that are cut, worn or otherwise damaged should not be used. Strap assemblies should never be tied into knots or allowed to become knotted. All straps are load control devices and should not be used for overhead lifting. Working load requirements should be evaluated by the user before selecting appropriate hardware & strap assemblies. All strap and binder assemblies or systems are only as strong as the weakest component, including the point of attachment. For other product warnings please see below and warnings on product labels.

All Durabilt ratchet and winch straps have sewn on labels to meet CHP Standards, CVSA Guidelines, North American Cargo Securement Standards, DOT Regulations, and WSTDA recommended standards. It is critical to follow D.O.T. (Department of Transportation) Federal Motor Safety Regulations as directed in parts §392.9, §393.7(b), §393.100 and §393.102 through §393.136 (where applicable).

Note: Please be aware of all current updates through 2010 and beyond.

Per required guidelines all Durabilt tie-down strap labels have the following:

1) Manufactures Identification

2) Working Load Limit (W.L.L.) in pounds and kilograms

3) Product Warnings

The following information is as prescribed by the Web Sling and Tie-Down Association, Inc. 1991 and revised 1998.

Inspection, Care & Use of Synthetic Web Tie-Downs

Removal From Service

A tie-down shall be removed from service if any of the following are visible.

  1. Holes, tears, cuts, snags or embedded particles in the webbing,
  2. Broken or worn stitching in load-bearing static patterns.
  3. Excessive abrasive wear of the webbing.
  4. Knots in any part of the webbing.
  5. Distortion, excessive pitting, corrosion or damage of any fitting or
  6. component.
  7. Melting, charring, or weld spatter on any part of the webbing.
  8. Chemical burns.
  9. Any conditions which cause doubt as to the strength of the tie-down.

Operating Practices

  1. Determine weight of the cargo to be secured, including expected Gravity “G” forces.
  2. Consideration shall be given to the angle from the vertical (cargo
  3. Tie-down to load angle) which reduces Working Load Limit. 3. Select tie-down having suitable characteristics for the type of load and environment.
  4. Tie-down shall not be loaded in excess of the Working Load Limit (W.L.L)*
  5. Tie-down shall be attached to provide control of the load and positioned in accordance with applicable regulations.
  6. Tie-down shall not be dragged on the floor, ground, or over abrasive surface.
  7. Tie-down shall not be tied into knots, or joined by knotting.
  8. Tie-down shall not be pulled from under loads if the load is resting on the tie-down.
  9. Tie-down shall always be protected from being cut by sharp corners, sharp edges, protrusions or abrasive surfaces.
  10. Tie-down equipped with metal fitting shall not be dropped.
  11. The opening in fittings must be the proper shape and size to insure that the fitting will seat properly in the anchorage point or other attachments. If the anchor point is inadequate to support the force of the tie-down system then the load rating of the tie-down shall limited to the strength of the anchor point.
  12. Tie-down shall not be used for lifting. Lifting includes raising, lowering and suspending.

*Working Load Limit (W.L.L.) is ⅓ of the tie-down breaking strength.

Environmental Considerations

  1. Tie-downs should be stored in a cool, dry and dark place, and shall not be exposed to sunlight when not in use. Ultra-violet light will affect the strength of the synthetic webbing in varying degrees ranging from slight to total degradation.
  2. Chemically active environments can affect the strength of tie-downs in varying degrees ranging from little to total degradation. The tie-down manufacturer or qualified person should be consulted before tie-downs are used or stored in chemically active environments.
  3. Tie-downs incorporating aluminum fitting(s) shall not be used where fumes, vapors, sprays, mists or liquids of alkalis and/or acids are present.
  4. Webbing shall not be used at temperatures in excess of 194 degrees F (90 degrees C) or below -40 degrees F (-40 degrees C).


  • Initial Inspection – Before any tie-down is placed in service it shall be inspected by a designated person to ensure that the correct tie-down is being used as well as to determine that the tie-down meets the requirements.
  • Frequent Inspection – This inspection shall be made by a qualified person handling the tie-down each time it is used:
  1. Frequency of us
  2. Severity of service conditions
  3. Experience gained on the service life of tie-downs used in similar applications
  4. Inspection should be conducted at least monthly
  • Periodic Inspection This inspection shall be conducted by designated personnel. Frequency of inspection should be based on:
  • Repair of Tie-down – No repairs of webbing, fittings, or stitching shall be permitted.

Additional requirements and safe operating practices are outlined in current Federal, State, Provincial, CVSA Guidelines and/or other regulations as applicable.

Web Sling & Tie Down Association Logo




DURABILT CHAIN & RELATED PRODUCTS are designed and built for long service. As with any product certain cautions and standards of treatment should be followed. Proper care will always extend the useful life of the product.


Components, such as hooks or shackles, should have at least the same working load limit (rated capacity) as the chain with which they are used. If not, the assembly shall be rated to the capacity of the weakest attachment.


  • The use of chain is subject to certain hazards that cannot be met by mechanical or manufacturing means, but only by the exercise of understanding, care, and common sense.
  • Do not exceed working load limit of the chain or attachment.
  • Chemical environments may adversely affect chain and components. Do not use in highly acidic environments.
  • High and low temperatures will effect chain and components if subjected to temperatures below -20°F (-29°C) or above 400°F (200°C).
  • Chains used in certain applications are subject to governmental regulations. Please follow all Federal, State, and/or Local Department of Transportation, OSHA, or other applicable standards and regulations when using DURABILT products.
  • Never directly weld or repair chain.
  • Read “Inspection and Proper Use” sections.


  • Regular inspections should be conducted on chain to determine damage or deterioration from use. The chain should be inspected for any of the warning signs below. If present, the chain should
  • immediately be removed from service
  • Cracks in the chain or any attachment.
  • Excessive nicks, gouges, or wear.
  • Attachment components should be removed from service if any dimension is worn by more than 10% from the original dimension.
  • Stretched, bent, twisted, or distorted chain links or components.
  • Excessive corrosion
  • Evidence of damage due to heat.
  • Evidence of field welding or weld splatter.
  • Any other condition which defects the strength of the chain.


  • To protect the users and to prevent damage to chain, the following safe practices should be followed:
  • Select a chain suitable for the application and environment.
  • The hooks and other components should be of a size to fit the intended connections.
  • Avoid shock load.
  • Cover or pad all sharp edges or corners in contact with the chain.
  • Assemble so that the load is properly seated in the hooks or other components.
  • Avoid tip loading of hooks and side loading of chain and components.
  • Avoid twisting or kinking the chain.
  • Never load or use a knotted chain.


All “Warnings and Cautions” apply to chain as well as all components and fittings. Purchasers are responsible for conveying the “Warnings and Cautions”, including the “Inspection” and “Proper Use” Section information to the end user. All DURABILT proof tested chain and components are proof tested in accordance with the applicable ASTM, NACM and ANSI/ASME Requirements.



  • Do Not lift more than the indicated capacity as stated on the metal label on the handle or block. Rated capacity on handle or block must match rated capacity on hook.
  • Do Not lift people or loads over people.
  • Do Not use hoist load-chain as a sling or choker.
  • Do Not operate with handle or chain extension. Operate by hand power only (never motorize).
  • Do Not operate a malfunctioning hoist.
  • Do Not use hoist with kinked, twisted, worn, or damaged load chain.
  • Do Not load hoist unless load chain is properly engaged in chain sprocket(s).
  • Do Not hang loads from free end of load chain.
  • Do Not remove or obscure metal warning label on handle or block.
  • Do Not load hoist if hook(s) has bent shank, or damage from cracks or chemicals, or hook has more than a 10% twist from plane of unbent hook. (Replace damaged hook.)
  • Do Not use in adverse environmental conditions.
  • Replace damaged hook latch when needed. Lubricate load chain but not to excess.
  • Always keep and maintain safe footing when operating.


  • Do not exceed pull on lever as stated on metal label of handle. •
  • Do not attempt to “free chain” hoist while load is applied.
  •  Adjustment of the load wheel will allow the load to release and may result in injury. Never release or disengage the brake with a load on the hoist. (Do not turn load wheel counterclockwise with a load on the hoist).


The DURALIFT Hoists are not to be used with materials which may explode, be highly corrosive or

be highly toxic. These uses require fail-safe support equipment which is not supplied with these hoists.

  • Never perform maintenance on hoist when supporting load.
  • Never modify or alter this equipment.
  • Always use DURALIFT replacement parts or DURABILT approved part replacements (see part list: “exploded view” and corresponding part number)
  • Keep hands clear from housing/body of hoist.
  • Do not “side load” when lifting or pulling. Hoist must be centered under top hook for straight in-line loading”.
  • Use only alloy chain and attachments for overhead lifting.
  • Do not use these hoists to lift personnel or loads over people.
  • Be sure personnel keep clear of supported load.
  • The hoist block must never come into contact with the load or support members.



 Read ANSI/ASME B30.16 and ANSI/ASME B30.10.Read the hoist manufacturer’s Operating and Maintenance instructions. Read all labels attached to equipment.




2.1 These specifications cover properties and grades of welded steel chain for industrial and commercial uses produced to accepted commercial tolerances. Special products such as sprocket chain, sprocket wheel chain, etc., are not covered by this specification. For specific applications, the user should consult the manufacturer for recommendations as to size and grade.

Grade 100 Alloy Chain – Premium quality, highest strength alloy chain, heat treated, used in a variety of sling and tie-down applications. For overhead lifting applications, only Alloy Chain should be used.

Grade 80 Alloy Chain – Premium quality, high strength alloy chain, heat treated, used in a variety of sling and tie-down applications. For overhead lifting applications, only Alloy Chain should be used.

Grade 70 Transport Chain – A high quality, high strength carbon steel chain, heat treated, used for load securement.

Not to be used in overhead lifting.

Grade 43 High Test Chain – A carbon steel chain widely used in industry, construction, agricultural and lumbering operations. Not to be used in overhead lifting.

Grade 30 Proof Coil Chain – General purpose, carbon steel chain. Used in a wide range of applications.

Not to be used in overhead lifting.


3.1 Working Load Limit (W.L.L.) – The “Working Load Limit” (rated capacity) is the maximum load that shall be applied in direct tension to an undamaged straight length of chain.

3.2  Proof Test – The “Proof Test” (manufacturing test force) is a term designating the minimum tensile force which has been applied to a chain under a constantly increasing force in direct tension during the manufacturing process. These loads are manufacturing integrity tests and shall not be used as criteria for service and design purposes.

3.3 Minimum Breaking Force – The “Minimum Breaking Force” is the minimum force at which the chain during manufacture has been found by testing to break when a constantly increasing force is applied in direct tension. Breaking force values are not guarantees that all chain segments will endure these loads (see Section 5.2). This test is a manufacturer’s attribute acceptance test and shall not be used as criteria for service and design purposes.

Adopted April 11, 2010

Grade 70 Transport Chain (NACM 96) – Durabilt Grade 70 Transport Chain is recommended for load binding applications, tie-downs, towing and logging operations. The strength to weight ratio exceeds that of Proof Coil (G30) and High Test (G43) chain. Durabilt G70 Chain is manufactured from carbon steel, then heat treated and zinc plated gold chromate for corrosion resistance. Durabilt G70 Chain is manufactured to NACM standards per specifications of the Department of Transportation (DOT) & CCMTA for tie down and transport use. Our G70 Chain has a 4-to-1 design factor and is embossed with G7 indetification. DO NOT USE FOR OVERHEAD LIFTING. DO NOT EXCEED WORK LOAD LIMIT (W.L.L.).

Grade 80 Alloy Lashing Chain (NACM 96) – Durabilt Grade 80 Alloy Lashing Chain is used in overhead lifting applica-tions as well tie down lashing & towing. G80 Chain is manufactured using special alloy steel which is quenched and tempered before proof testing. Durabilt Grade 80 Chain meets the guidelines of the National Association of Chain Manufacturers
(NACM) and ASTM standards. Our G80 Chain has a 4-to-1 design factor as required by the International Standards Orga-nization (ISO). Durabilt G80 Chain is embossed with G8 indetification. APPROVED FOR OVERHEAD LIFTING. DO NOT EXCEED WORK LOAD LIMIT (W.L.L.).
Design Factor is 4-to-1.

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