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 5965-00-553-6898
NSN 6650-00-279-5741
NSN 5915-01-655-1413
NSN 6105-01-189-0278
NSN 5960-01-070-3258
NSN 6320-01-207-9038
NSN 5905-00-646-9152
NSN 5998-01-497-4916
NSN 6620-01-476-7355
NSN 5935-01-423-0622
NSN 6645-01-422-3510
NSN 6135-00-078-9931