Description

This specification covers welded and weldless chain of commercial quality together with sundry attachments, more commonly used with this chain.

Note: Federal Specification RR C 271B refers to a historic Specification dated 28 August 1973 and is no longer available online. The Specification was updated 17 July 1986 and reissued as Federal Specification RR C 271C, the web link refers users to this updated Specification as the closest relevant document. 

Scope

This specification covers welded and weldless chain of commercial quality together with sundry attachments more commonly used with this chain.

Federal specification coverage. Federal specifications do not include all types, grades, classes, styles, and so forth, of the commodities indicated by the title of the specification, or which are commercially available, but are intended to cover the types, and so forth, which are suitable for Federal Government requirements.

The following types of chain is covered:

• Type I - Chain, welded steel,
• Type II - Chain, weldless.

Chain 'attachments' includes:

• Type II - Connecting links,
• Type III - Repair or end lap links,
• Type IV - Shackles,
• Type V -Hooks,
• Type VI - Rings,
• Type VII - Swivels,
• Type IX - Bead chain fasteners,
• Type X - Bead chain couplings,
• Type XI - Bead chain insulating couplings,
• Type XIII - Pear shaped links.