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 6620-01-217-1490
NSN 7035-00-455-7666
NSN 5930-01-089-8441
NSN 6150-01-005-0150
NSN 5960-01-399-4327
NSN 5996-00-202-6576
NSN 5920-01-336-4608
NSN 6130-01-322-2368
NSN 6145-00-139-1203
NSN 6685-01-408-0860
NSN 5855-01-384-3314
NSN 6610-01-485-5083