Color blue
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 6220-01-646-5501
NSN 7035-01-518-2214
NSN 5996-01-477-4143
NSN 5915-00-761-1844
NSN 5895-00-529-6225
NSN 4140-00-554-4050
NSN 6135-01-127-0173
NSN 5910-01-153-8284
NSN 7035-01-123-8723
NSN 6320-00-557-3079
NSN 6685-00-912-1847
NSN 5915-01-391-7149