Specific material name is "delrin; " diameter unit of measure is for o.D.
No other part numbers with same form, fit, and function found.
A cap of various shapes, sizes and materials, specially designed to fit over a nut or bolt head to provide protection from corrison, impairments, sticking paint, motar and the like.
NSN 6150-00-445-2382
NSN 5920-01-552-2642
NSN 5915-00-514-2098
NSN 6105-01-510-5312
NSN 5990-01-645-2592
NSN 5999-01-427-3702
NSN 2925-00-964-0823
NSN 5910-01-435-0204
NSN 5996-00-811-8120
NSN 5960-01-073-8454
NSN 5905-00-117-0428
NSN 5920-00-325-3980