A soft metal or nonmetal sleeve, designed to mate with a pin-rivet. it may include an external wrenching facility which breaks off at a perdetermined torque to form a head.
NSN 5905-01-257-2190
NSN 5855-01-457-3608
NSN 6145-01-619-8280
NSN 6150-01-624-6153
NSN 5945-00-925-9992
NSN 6650-01-480-5443
NSN 6135-01-244-5580
NSN 5855-01-138-4985
NSN 5930-01-363-1702
NSN 5855-01-458-5163
NSN 6610-01-316-1194
NSN 5950-01-549-4274