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Stren-Flex Lifting Slings, Strength and Flexibility In Lifting

Stren-Flex® Synthetic Round Slings, Synthetic Web Slings, Cargo Strap Tiedowns,Chain Slings, and Lifting Slings
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Chain Reference

Welded graded chain is an industrial grade chain used exclusively for rigging, towing and overhead lifting applications. The standardized grade designations are 30, 43 and 70 for carbon steel chain, and 63 and 80 for alloy steel chain. The grade number relates to the strength level of the chain, with the grade number increasing as the strength of the chain increases. We also offer weldless and non-graded chain for non-technical and low strength applications. The following provides an analysis and application recommendations for specific welded chain grades.

  • Grade 30 Proof Coil Chain

    Electrically welded from low carbon steel, grade 30 is a durable, economical utility chain for applications that do not require a high strength to weight ratio. It has a wide range of applications throughout industry and agriculture; including logging, guard rails, towing, tailgates, and securing loads.

    Self Colored Finish
    Chain Size (in.) Full Drum (Part #) Length (ft.) Half Drum (Part #) Length (ft.) Pail (Part #) Length (ft.)
    3/16 671040M 850 671094M 500 671010M 250
    1/4 671041M 800 671091M 400 671011M 140
    5/16 671042M 550 671092M 275 671012M 90
    3/8 671043M 400 671093M 200 671013M 60
    7/16 671044 300 - - - -
    1/2 671065 350 671045 200 - -
    5/8 671066 250 671046 150 - -
    3/4 671067 170 671047 100 - -
    1 671069 100 671049 60 - -
    Zinc Plated Finish
    Chain Size (in.) Full Drum (Part #) Length (ft.) Half Drum (Part #) Length (ft.) Pail (Part #) Length (ft.)
    3/16 671440M 850 671494M 500 671410M 250
    1/4 671441M 800 671491M 400 671411M 140
    5/16 671442M 550 671492M 275 671412M 90
    3/8 671443M 400 671493M 200 671413M 60
    7/16 671484 450 - - - -
    1/2 - - 671445 200 671415 40
    5/8 - - - - - -
    3/4 - - - - - -
    1 - - - - - -
    Hot Dipped Galvanized Finish
    Chain Size (in.) Full Drum (Part #) Length (ft.) Half Drum (Part #) Length (ft.) Pail (Part #) Length (ft.)
    3/16 671340M 850 671394M 500 671310M 250
    1/4 671341M 800 671391M 400 671311M 140
    5/16 671342M 550 671392M 275 671312M 90
    3/8 671343M 400 671393M 200 671313M 60
    7/16 671344 300 - - - -
    1/2 671345 200 671395 100 671315 40
    5/8 671366 250 671346 150 - -
    3/4 671367 170 671347 100 - -
    1 - - 671369 100 - -

  • Grade 43 High Test Chain

    A higher strength carbon steel chain provides an increased strength to weight ratio. Industrial applications include lumbering, construction, binding and load securement assemblies.

    Self Colored Finish
    Chain Size (in.) Full Drum (Part #) Length (ft.) Half Drum (Part #) Length (ft.) Pail (Part #) Length (ft.)
    1/4 678141 800 678131 400 678111 140
    5/16 678142 550 678132 275 678112 90
    3/8 678143 400 678133 200 678113 60
    7/16 678144 300 678134 150 - -
    1/2 678165 350 678145 200 - -
    5/8 678146 150 678136 75 - -
    3/4 678147 100 678137 50 - -
    7/8 678148 80 678138 40 - -
    1 678149 60 678139 30 - -
    Zinc Plated Finish
    Chain Size (in.) Full Drum (Part #) Length (ft.) Half Drum (Part #) Length (ft.) Pail (Part #) Length (ft.)
    1/4 678441 800 678431 400 678411 140
    5/16 678442 550 678432 275 678412 90
    3/8 678433 400 678433 200 678413 60
    7/16 678434 300 - - - -
    1/2 678445 200 678435 100 - -
    5/8 678446 150 678436 75 - -
    3/4 678447 100 678437 50 - -
    7/8 - - - - - -
    1 - - - - - -
    Hot Dipped Galvanized Finish
    Chain Size (in.) Full Drum (Part #) Length (ft.) Half Drum (Part #) Length (ft.) Pail (Part #) Length (ft.)
    1/4 678341 800 678331 400 678311 140
    5/16 678342 550 678332 275 678312 90
    3/8 678343 400 678333 200 678313 60
    7/16 - - 678334 150 - -
    1/2 678345 200 678335 100 - -
    5/8 678346 150 678336 75 - -
    3/4 678347 100 678337 50 - -
    7/8 - 80 - - - -
    1 - - - - - -

  • Grade 70 Binding Chain

    Load ratings for grade 70 chain averages 20% higher than grade 43 chain, so a smaller size chain can be used for many jobs. Advantages include less weight, easier handling and more convenient storage. Higher strength makes grade 70 ideal for truckers, loggers and highway crews; for secure load binding and tie-downs; for towing, hauling and lashing, and as trawling chain. Additional uses include oil rigs and a variety of other OEM applications.

    Chain Size (in.) Working Load Limit Product Code (Per Foot) Approx. Weight (lb./ft.) Approx. No. of Links per ft.
    Self Colored Yellow Chromate Thermal Dipped Black
    1/4 3150 608926 608927 - 0.76 14.3
    5/16 4700 608936 608935 - 1.01 11.8
    3/8 6600 608940 608941 - 1.58 13.7
    7/16 8750 608946 908947 - 2.09 15.9
    1/2 11300 608953 608954 - 2.56 20.8
    5/8 15800 608966 - - 3.57 24
    3/4 24700 - - 608979 5.34 26.8
    Drum Pack Product Code (Yellow Chromate Finish)
    Chain Size (in.) Full Drum (Part #) Length (ft.) Half Drum (Part #) Length (ft.) Pail        (Part #) Length (ft.)
    1/4 678531 800 678521 400 678517 130
    5/16 678532 550 678522 275 678518 90
    3/8 678533 400 678523 200 678519 60
    7/16 678534 300 678524 150 - -
    1/2 678535 200 678525 100 9704850 40
    5/8 9701355 164 - - - -
    3/4 - - - - - -

  • Grade 80 Herc-Alloy 800 Chain

    Grade 80 chain is specifically recommended for overhead lifting, Herc-Alloy 800 is engineered from specially selected alloy steel for the highest strength to weight ratio and maximum durability. Increased strength enables the user to employ a lighter, smaller chain on many jobs.

    Product Codes
    Chain Size (in.) Working Load Limit (lb.) Code Per Foot Drum Code Drum Length (ft.)
    7/32 2100 607020 677010 800
    9/32 3500 607028 677011 500
    5/16 4500 607031 - -
    3/8 7100 607037 677013 500
    1/2 12000 607050 677015 300
    5/8 18100 607062 677016 200
    3/4 28300 607075 677017 100
    7/8 34200 607087 677018 100
    1 47700 607101 677019 100
    1-1/4 72300 607128 677070 90

  • Grade 100 Herc-Alloy Chain

    Chain Size (in.) Working Load Limit (lb.) Product Codes Drum Length (ft.)
    Code Per Foot Drum Code
    7/32 2700 607321 677310 800
    9/32 4300 607328 677311 500
    3/8 8800 607339 677313 500
    1/2 15000 607351 677315 300
    5/8 22600 607363 677316 200
    3/4 35300 607378 677317 100

  • Alloy Conveying Chain

    This chain is engineered from specially selected alloy steel for high strength and durability. The chain is available in metric sizes and in case hardened and through hardened heat treatments. Industrial applications include ash handling conveyors, furnace damper door chains, dam gate chain and waste wood handling.

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