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 5915-00-367-2854
NSN 5835-01-337-8635
NSN 5915-01-111-7670
NSN 6650-00-834-9062
NSN 5996-00-401-8063
NSN 6135-01-514-0356
NSN 6220-00-463-4812
NSN 5855-00-133-5897
NSN 5925-01-576-5407
NSN 2925-01-385-1763
NSN 2925-01-541-7217
NSN 6645-00-269-2764