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.

Pages 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9 - 10 - 11 - 12 - 13 - 14 - 15 - 16 - 17 - 18 - 19 - 20 - 21 - 22 - 23 - 24 - 25 - 26 - 27 - 28 - 29 - 30 - 31 - 32 - 33 - 34 - 35 - 36 - 37 - 38 - 39 - 40 - 41 - 42 - 43 - 44 - 45

RR-C-271F

FIGURE 28. Type X, bead-chain coupling.

TABLE XXIII. Type X, bead-chain couplings.

Trade no.

Size of chain used with (inch)

Length overall (approx) (inches)

Ring wire size (max) (inch)

Weight per 100 couplings

(approx) (pounds)

3-L

6-L

10-B

13-B

3/32

1/8

3/16

1/4

0.375

0.5

0.531

0.688

0.125

0.141

0.0386

0.085

0.150

0.420

3.4.9 Type XI, bead-chain insulating couplings. The bead-chain insulating couplings shall be as shown on figure 29, and shall be in accordance with the dimensions and physical requirements shown in table XXIV. The couplings shall have a hard fiber body fitted at each end with a metal cap that shall have a hole and slot to receive bead chain. The couplings shall withstand dielectric strength tests (see 4.4.2.6).

FIGURE 29. Type XI, bead-chain insulating coupling.