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 2925-01-033-0141
NSN 6105-01-204-8985
NSN 5920-01-206-9947
NSN 5998-01-403-2586
NSN 4140-01-466-3573
NSN 5910-01-232-0967
NSN 5945-01-123-8117
NSN 5895-01-323-9501
NSN 4140-01-308-1964
NSN 6620-00-071-0181
NSN 5965-01-296-8991
NSN 5835-01-321-7895