TM 55-2200-001-12
Change 3
Section No. 1--General Rules (Rev.-9-1981)
9
CHAlN AND CHAIN TIE-DOWN ASSEMBLIES, Dimensions and Working Load.
Welded Link Chain
Working Load Limit In Pounds
High Test Steel
Chain ASTM
Spec. A-413
Alloy Steel
Chain ASTM
Spec. A-391
BBB Steel
Special Alloy
Nominal
Chain ASTM
Steel Chains
Size
Spec. A-413
Inches
(Latest Rev.)
Latest Rev.
Grade 43
Grade 70
Latest Rev.
Grade 80
3/8
2,750
5.100
5,400
6,600
6,600
7300
9000
7/16
6,600
1/2
4,750
8,200
9,200
11.300
11,250
13,000
13,750
9/16
5,875
5/8
7,250
11,500
16,500
23,000
3/4
10,25
16,200
23,000
29,300
7/8
12,000
28,750
39,900
1
38,750
Note
(a)-All chain assembly components must be equivalent in structural strength to the component
chain in the manner that the component acts or reacts in the force system of chain assembly.
Accessory components in the chain assembly must meet the specified working load strength of the
chain used in the assembly.
Note
(b)-The above table excludes chains and tie-down assemblies used on auto-rack cars.
D-28.1