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 6620-01-266-8894
NSN 6110-00-451-3779
NSN 5996-00-865-3513
NSN 4140-00-170-5152
NSN 5965-01-345-7493
NSN 5855-00-494-9581
NSN 7035-00-631-3782
NSN 5835-01-297-1909
NSN 7035-01-386-3004
NSN 5998-01-025-1688
NSN 2925-01-505-1666
NSN 5895-01-227-4742