The valve is inserted through the backside of the wheel and clamped from the front with a nut and washer
A metal, or metal and rubber, tubular stem containing a valve core and cap. The mounting end may have a base with a fitting designed for mounting on a pneumatic tire, inner tube, or tire rim, to permit and retain inflation or permit deflation. The mounting end may be internally threaded for adaptability to a valve spud or may be provided with cure-on or clamp in features. The other end is externally threaded to accommodate a valve cap, and internally threaded to accommodate the valve core.
Dept. of the Army 
Dept. of the Air Force 
U.s. Marine Corps 
Dept. of the Navy 
U.s. Postal Service - Procurement and Supplies Dept. Classification: Other taps, cocks, valves, etc., nesoi
NSN 5999-01-130-4116
NSN 5996-01-252-3485
NSN 5915-00-802-0309
NSN 5990-01-612-5323
NSN 5965-00-289-6280
NSN 5998-00-737-5696
NSN 5895-01-181-5471
NSN 6620-01-203-1022
NSN 4140-01-614-5547
NSN 6130-01-265-7225
NSN 5855-00-494-9581
NSN 6320-01-125-3361