RR-C-271, “Chains and Attachments, Carbon and Alloy Steel,” has just been updated. The new Revision G is available now from Document Center Inc. in both paper format and for pdf download. It is a major revision, with changes too extensive to notate in the update.
The new RR-C-271 Revision G replaces the previous Revision F from 2011. The document is used in Federal Procurement for the U.S. government. As federal specification, it is also widely used in U.S. DoD contracts and across industry as well. You’ll find that the specification covers carbon and alloy steel chain, commercial quality, and the attachments most often used with this type of chain.
Will you find all types, grades, classes and styles of this type of chain in this document? No, just the ones that are used to meet Federal requirements.
How much information is in the RR-C-271? There are 61 pages in this document. The publication starts with the usual scope and referenced documents sections. Then follows a 35-page requirements clause with extensive tables and figures to define all of the many parts included in the document. Quality requirements are reviewed next. Then Section 5 covers packaging, and Section 6 completes the document with various notes. There are two appendices for your use. Appendix A is on the PIN (Part Identification Number) system. Appendix B covers the various material requirements (what kind of alloy is acceptable for eaach of the chains and attachments).
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