RR-C-271 Chains And Attachments, Carbon And Alloy SteelThis specification covers carbon and alloy steel chain of commercial quality together with the attachments most commonly used with this chain.

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RR-C-271F

3.4.12 Type XV, end links. The end links shall be manufactured from carbon or alloy steel conforming, respectively, to ASTM A576 or ASTM A322, and the limitation in chemical composition shall be as specified in table I; the links shall be heat treated, weldless, and similar to figure 32; and the links shall be in accordance with the dimensions and physical requirements as shown in table XXVII.

FIGURE 32. Type XV, end link. TABLE XXVII. Type XV, end links.

Trade size (nom) (inches)

Inside length (nom) (inches)

Inside width (nom) (inches)

Weight each (approx) (pounds)

Working load limit (pounds)

Proof load (min) (pounds)

Breaking load (min) (pounds)

0.625

0.75

0.875

3.25

3.5

5.125

1.125

1.5

0.95

1.51

2.75

3.95

3,537

5,525

7,950

23,750

7,070

11,050

15,900

50,000

14,150

22,100

31,800

95,000

3.4.12.1 Finish. Links shall be zinc coated as specified in 3.2.1.4.

3.4.13 Type XVI, chain master links. The chain master links shall be in accordance with

ASTM A952/A952M.

3.5 Workmanship. The chain and attachments shall be free from injurious imperfections and defects that may impair appearance or serviceability. Chain and attachments shall be free from fins, cracks, flaws, or seams. The screw threads shall be true to form, clean cut, and free from injurious defects.