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 6610-00-785-9239
NSN 5965-00-243-1243
NSN 6610-01-529-2337
NSN 5999-00-889-5195
NSN 5996-00-802-6095
NSN 5960-01-149-1261
NSN 6685-01-016-5823
NSN 5950-01-081-6941
NSN 6620-01-448-0572
NSN 5999-00-517-6778
NSN 5835-01-011-4366
NSN 4140-00-172-1804