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 2925-01-544-4880
NSN 5935-01-026-0965
NSN 6650-00-801-1681
NSN 5960-01-381-4692
NSN 5990-00-594-7291
NSN 5990-00-728-4356
NSN 5950-01-327-9860
NSN 6620-00-114-2837
NSN 2925-01-336-2820
NSN 5855-01-450-5609
NSN 6620-01-354-8472
NSN 6610-01-391-6781