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 6150-00-148-3909
NSN 5905-01-613-5247
NSN 5925-01-519-1314
NSN 5975-00-551-3152
NSN 6320-01-111-8851
NSN 6145-01-367-9359
NSN 6620-01-138-8250
NSN 5975-00-926-3073
NSN 5975-00-719-9793
NSN 5910-00-855-0616
NSN 5990-01-448-2751
NSN 5960-01-165-1956