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 5855-01-366-2429
NSN 5855-00-532-0025
NSN 5998-00-492-8046
NSN 7035-00-946-2642
NSN 4140-00-128-8072
NSN 5915-00-083-3013
NSN 6130-00-528-1266
NSN 4140-00-170-5152
NSN 5945-01-301-2458
NSN 6320-00-546-9249
NSN 5990-01-065-0492
NSN 6620-00-619-7769