Chain Size
Working
Load Limit (lbs)
Nominal inside link dim (inches)
Weight per 100 ft. (lbs)
Inches
Decimal
Length
Width
CM
GRADE 30
PROOF
COIL
CHAIN
3/16 .218 800 .95 .40 38
1/4 .276 1,300 1.00 .47 66
5/16 .327 1,900 1.10 .50 98
3/8 .390 2,650 1.23 .62 144
7/16 .468 3,700 1.37 .75 210
1/2 .531 4,500 1.50 .81 278
5/8 .656 6,900 1.87 1.00 422
3/4 .787 10,600 2.12 1.12 628
1 1.031 17,900 2.75 1.50 1,069
CM
GRADE 43
HIGH TEST
CHAIN
1/4 .281 2,600 1.00 .47 71
5/16 .327 3,900 1.10 .50 98
3/8 .390 5,400 1.23 .62 144
7/16 .468 7,200 1.37 .75 210
1/2 .531 9,200 1.50 .81 278
5/8 .656 13,000 1.87 1.00 422
3/4 .781 20,200 2.12 1.12 606
7/8 .875 24,500 2.25 1.14 776
1 1.000 34,100 2.75 1.50 1,050
CM
GRADE 70
TRANSPORT
(BINDING)
CHAIN
1/4 .281 3,150 .84 .47 74
5/16 .327 4,700 .98 .46 100
3/8 .406 6,600 1.14 .54 156
7/16 .468 8,750 1.33 .62 204
1/2 .531 11,300 1.43 .72 259
           
           
           
           

Dimensions and weights are approximate and subject to variations.

Chain Size
Working
Load Limit (lbs)
Nominal inside link dim (inches)
Weight per 100 ft. (lbs)
Feet per Drum
Inches
mm
Lenght
Width
CM
GRADE 80
ALLOY
CHAIN
7/32 5.5 2,100 .671 .296 44.7 800
9/32 7.0 3,500 .868 .395 74.2 500
5/16 8.0 4,500 1.05 .454 90.6
3/8 10.0 7,100 1.222 .572 145.9 500
1/2 13.0 12,000 1.404 .720 1257.7 300
5/8 16.0 18,100 1.733 .854 1387.3 200
3/4 20.0 28,300 2.160 1.052 1622.0 100
7/8 22.0 34,200 2.250 1.137 1776.4 100
1 26.0 47,700 2.664 1.348 1995.4 100
1 1/4 32.0 72,300 3.250 1.656 11,570.9 90

 

CM grade 30
proof coil chain
Electrically welded from low
carbon steel, CM grade 30 is a durable, economical utility chain for applications which 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.

Specification name: Proof coil.

CM 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.

Specification name: High test.

CM grade 70
binding chain
Load ratings for CM grade 70 chain average 20% higher than CM 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 CM 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.

Specification name:
Binding/transport.

CM grade 80 Herc-Alloy 800 chain

The CM chain 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.

Specification name: Alloy.

 

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