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 5835-01-015-4610
NSN 5950-00-231-6204
NSN 5996-01-203-1938
NSN 6610-00-034-3709
NSN 5905-01-521-0961
NSN 5950-01-227-0539
NSN 2925-00-782-1498
NSN 5910-01-085-4885
NSN 6220-00-947-0265
NSN 4140-00-179-3977
NSN 6610-01-172-4041
NSN 6240-01-656-8571