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 6145-01-548-5812
NSN 5925-00-232-3048
NSN 6150-00-788-6064
NSN 5999-00-078-9890
NSN 5999-00-330-9856
NSN 6135-01-487-6275
NSN 6620-00-086-5223
NSN 5930-00-291-0852
NSN 6130-01-203-5095
NSN 6650-01-643-0534
NSN 5905-01-046-0816
NSN 6320-00-681-1324