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 5935-01-476-6595
NSN 6650-01-328-6624
NSN 2925-00-452-6403
NSN 5915-00-398-0677
NSN 5965-00-689-1545
NSN 5985-01-503-8976
NSN 6145-01-421-2458
NSN 6145-01-056-5171
NSN 6620-01-444-4048
NSN 5985-01-204-0237
NSN 6645-01-442-6476
NSN 5855-00-494-9581