Check out this FEDERAL SPECIFICATION L-P-410A - POLYAMIDE (NYLON) type material. The date on this is from March 16, 1966. You won't find this FEDERAL spec easily anywhere else. This Spec is a scanned in PDF format, ready for immediate download after purchase. There are 17 Pages of this spec. Please hit me up for any questions you may have.
March 16, 1966
Int. Fed. Spec. L-P-00410 (GSA-FSS)
January 25, 1965
PLASTICS, POLYAMIDE (NYLON), RIGID: RODS, TUBES, FLATS, MOLDED AND CAST PARTS
1. SCOPE AND CLASSIFICATION
1.1 This specification covers the requirements of rigid plastic polyamide (nylon) molded and cast parts, rods, tubing, bushing stock, tubular bar, and flats for mechanical and electrical applications.
1.2 Classification. The polyamide rods, tubes, flats, molded and cast parts covered by this specification shall be furnished in the following composition as specified.
Polyhexamethylene adipamide, (nylon 6/6)
Polycaprolactam, (nylon 6)
Monomer Cast, (nylon 6)
Polyhexamethylene sebacamide, (nylon 6/10), low moisture absorption polyamide.