Nominal Chain Size

Material Diameter

Working Load Limit

Proof Test

Min. Breaking Force

Max. Length Per 100 Links

in

in

mm

lbs

kg

lbs

kN

lbs

kN

in

m

1/8

0.156

4.0

375

170

800

3.6

1,600

7.1

94

2.39

3/16

0.218

5.5

750

340

1,500

6.7

3,000

13.3

99

2.51

1/4

0.281

7.1

1,250

570

2,500

11.1

5,000

22.2

104

2.64

5/16

0.343

8.7

1,900

860

3,800

16.9

7,600

33.8

114

2.89

3/8

0.406

10.3

2,650

1,200

5,300

23.6

10,600

47.2

128

3.25

7/16

0.468

11.9

3,500

1,590

7,000

31.1

14,000

62.3

142

3.60

1/2

0.531

13.5

4,500

2,040

9,000

40.0

18,000

80.1

156

3.96

5/8

0.656

16.7

6,900

3,130

13,800

61.4

27,600

122.8

194

4.92

3/4

0.781

19.8

9,750

4,420

19,500

86.7

39,000

173.5

220

5.59