5315-00-957-7053 (HD8870)
NSN 5315-00-957-7053 (NIIN 00-957-7053) is a headed straight pin in Federal Supply Class 5315, Nails, Machine Keys, And Pins — a headed, cylindrically-shaped item having a solid shank for fitting into corresponding holes, used for aligning or fastening. Manufacturer part number HD8870 (American Standard IncWestinghouse, CAGE 35311); also referenced as MS20392-12C71, NASM5673 (National Aerospace Standards).
Key specs: 26.5 to 32 rockwell c overall hardness; full characteristics table below. NIIN assigned January 1962; DEMIL A (none required). Supersedes 5315-00-664-3073 (1977).