A cylindrical item which may have wrenching and/or driving facilities and/or shoulders. It is designed to be inserted in a drilled or a pretapped hole, or molded or pressed into soft material to reduce the size of a tapped hole; to provide threads; to add strength, and/or to prevent stripping. It is one of the following: (1) a one-piece, flanged or unflanged, internally threaded item which may have external threads, and/or serrations around the periphery of the collar, designed to engage a serrated lock ring which is not included with the item; (2) a one-piece precision coiled wire; (3) a two-piece item consisting of an internally threaded cylinder and a mating externally threaded part; or (4) a one-piece internally threaded item whose outside diameter is tapered and/or knurled and/or with fin(s). The internal thread of the item may have a locking feature. Excludes items having a sleeve on its underportion which can be clinched or crimped. Excludes bushing, machine thread; nut, plain, knurled; nut, plain, round; nut, plain, clinch and nut, self-locking, clinch. See also nut, plain, plate.
Dept. of the Army 
Dept. of the Air Force 
Defense Threat Reduction Agency 
U.s. Marine Corps 
Dept. of the Navy 
U.s. Coast Guard 
Poland 
Brazil 
Spain 
Israel 
Singapore 
Morocco 
Malaysia 
Australia 
Belgium 
Canada 
New Zealand 
France 
Germany 
Republic of Korea 
United Kingdom 
Netherlands 
Portugal 
Denmark 
Norway 
Greece 
Turkey Classification: Press-fasteners, snap-fasteners & press-studs & parts therefor
NSN 5945-01-486-9435
NSN 5990-01-055-9471
NSN 5975-01-528-7770
NSN 6130-01-261-9099
NSN 6620-01-069-0912
NSN 5975-00-928-4142
NSN 6135-01-100-9056
NSN 6105-00-053-8638
NSN 5935-01-656-2457
NSN 5945-01-520-6297
NSN 6105-01-459-9960
NSN 5996-00-468-1874