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 5960-01-144-9183
NSN 6645-01-447-3143
NSN 5925-00-119-3333
NSN 6645-01-440-5500
NSN 4140-00-173-0706
NSN 6650-01-129-2886
NSN 5920-00-858-1118
NSN 6645-01-012-5972
NSN 2925-01-408-9485
NSN 5920-01-448-3249
NSN 6220-01-111-2073
NSN 6130-01-212-3035