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 6135-01-396-0704
NSN 5925-00-493-1881
NSN 6105-00-127-7617
NSN 5895-01-524-4093
NSN 6110-01-123-0354
NSN 5910-01-415-2463
NSN 5950-00-166-0794
NSN 6620-01-582-0090
NSN 6130-01-356-0978
NSN 6645-01-386-4588
NSN 6150-00-820-6425
NSN 5998-01-254-9999