5310-00-018-0610 (1232)
NSN 5310-00-018-0610 (NIIN 00-018-0610) is a lock washer in Federal Supply Class 5310, Nuts And Washers — a washer, usually round, with a centrally-located hole. Manufacturer part number 1232 (Itw Shakeproof Automotive Products, CAGE 78189); also referenced as MILW6986TYPEA (Military Specifications); 180610 (General Motors LLC); T107L (Timpte Inc).
NIIN assigned January 1963; DEMIL A (none required). Related NSN 5310-00-905-7655.