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 6150-01-412-6535
NSN 5935-01-567-0054
NSN 5915-01-444-8938
NSN 6685-00-147-6094
NSN 6150-01-509-6488
NSN 6610-00-993-5601
NSN 5905-01-233-3226
NSN 5985-01-185-7706
NSN 5895-01-611-0124
NSN 5975-01-304-7684
NSN 6110-01-030-2512
NSN 6645-00-173-2800