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 
U.s. Marine Corps 
Dept. of the Navy 
National Aeronautics and Space Administration 
Austria 
Finland 
Lithuania 
Poland 
Brazil 
Spain 
Israel 
Singapore 
Kuwait 
Saudi Arabia 
Malaysia 
Australia 
Canada 
New Zealand 
France 
Germany 
Republic of Korea 
United Kingdom 
Netherlands 
Portugal 
Italy 
Denmark 
Norway 
Greece 
Turkey 
NATO Maintenance and Supply Agency Classification: Press-fasteners, snap-fasteners & press-studs & parts therefor
NSN 6685-00-832-6922
NSN 5925-00-816-9929
NSN 5996-01-417-7634
NSN 5990-01-196-2953
NSN 5905-01-114-4225
NSN 6620-01-380-4882
NSN 6105-01-406-2828
NSN 6220-00-351-3397
NSN 6135-00-913-2062
NSN 5965-00-142-9052
NSN 5985-01-114-7247
NSN 6645-01-512-8472