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CM Proof Coil Chain
The above picture may not be
an exact representation of the product

CM Proof Coil Chain
Grade 30

WLL: 800 to 10,600 lbs.
Sizes: 3/16 to 3/4 in.

Grade 30 chain, commonly called Proof Coil, is manufactured to meet ASTM & NACM specifications. Typical uses include barrier chains, trailer safety chains, light construction, marine industry, etc. Grade 30 chain is available in a wide assortment of finishes and packaged configurations. It should not be used for overhead lifting.

  • Meets ASTM & NACM standards
  • Available in a wide assortment of finishes including, Self-Colored, Zinc Plated, Galvanized, Powder Coated
  • Permanent identification on chain (embossed with CM30)
  • 100% proof tested
  • Available in drums, pails and multiple styles of assemblies
  • Design factor 4:1
PROOF COIL Chain GRADE 30
Chain
Size (in)
Working Load
Limit (lbs)
Nominal Chain Dimensions (in.) Weight*
(lbs./ft.)
Approximate Number
of Links (per ft.)
Material
Diameter A
Inside
Length B
Inside
Width C
3/16 800 0.22 0.97 0.45 0.40 12.4
1/4 1,300 0.28 1.22 0.51 0.65 9.9
5/16 1,900 0.33 1.27 0.60 0.98 9.5
3/8 2,650 0.39 1.35 0.58 1.40 8.9
1/2 4,500 0.515 1.73 0.81 2.416 6.9
5/8 6,900 0.63 1.92 0.86 3.63 6.3
3/4 10,600 0.78 2.40 1.07 5.68 5.0
PROOF COIL Chain GRADE 30  
  Self Colored Finish Zinc Plated Finished Hot Dipped Galvanized Finish
  Full Drum Half Drum Full Drum Half Drum Pail Full Drum Half Drum Pail
Chain Size (in) Product Code Length (ft) Product Code Length (ft) Product Code Length (ft) Product Code Length (ft) Product Code Length (ft) Product Code Length (ft) Product Code Length (ft) Product Code Length (ft)
Import  
3/16 671040 850 - - 671440 850 - - 671410 250 671340 850 671394 500 - -
1/4 671041 800 671091 400 671441 800 671491 400 671411 140 671341 800 671391 400 - -
5/16 671042 550 671092 275 671442 550 671492 275 671412 90 671342 550 - - 671352 75
3/8 671043 400 671093 200 671443 400 - - 671413 60 671343 400 671393 200 - -
North American  
1/2 - - 671045 200 671445 200 - - 671415 40 671345 200 - - - -
5/8 671046 150 - - - - - - - - 671346 150 - - - -
3/4 671047 100 - - - - - - - - 671347 100 - - - -
Hanger Chain GRADE 30
Chain
Size (in)
Working Load
Limit (lbs.)
Product
Code
L (ft) Finish Weight
(lbs)
1/4 1,300 601710CMG 3 Self Colored 2.23
1/4 1,300 601710CMG 4 Self Colored 2.88
1/4 1,300 601712CMG 5 Self Colored 3.52
1/4 1,300 601714CMG 7 Self Colored 4.82