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

shackle component being marked, but not to exceed 0.75 inch in height by 0.125 inch in relief. Stamping dies shall be of the round bottom, low-stress type. Marking location shall not interfere with the serviceability of the shackle assembly.

3.4.3.1.7 Finish. Shackle components shall be as specified in 3.2.1.3.

3.4.3.2 Form and dimensions. The form of the respective shackle types and classes shall be similar to that shown on figures 17 and 18 (see 6.2). Except for reference dimensions, the dimensions of shackle bodies and component pins and bolts shall conform to the dimensional requirements specified in tables IX, X, XI, XII, XIII, and XIV. Reference dimensions are for information only.

FIGURE 17. Type IVA, anchor shackles.

FIGURE 18. Type IVB, chain shackles.