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 5925-00-867-9928
NSN 6105-00-141-0300
NSN 5855-01-173-0808
NSN 5990-00-011-2994
NSN 2925-01-573-1067
NSN 6240-01-506-3911
NSN 5965-00-710-5764
NSN 5925-00-142-9991
NSN 6220-01-355-3487
NSN 5930-01-506-5917
NSN 5985-01-581-1619
NSN 6145-01-479-6848