5325-00-141-7848 (SX581)
NSN 5325-00-141-7848 (NIIN 00-141-7848) is a turnlock fastener lock spring in Federal Supply Class 5325, Fastening Devices — a spring-tempered wire item used to secure a stud, turnlock fastener or stud assembly, turnlock fastener by engaging with the cammed groove of the stud. Manufacturer part number SX581 (Southco Inc, CAGE 72794); also referenced as X581 (Southco Inc).
NIIN assigned January 1963; DEMIL A (none required); unit of issue EA (each), $0.04 gov standard price.