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 7035-01-313-6973
NSN 6135-01-408-0313
NSN 6240-01-180-3720
NSN 6620-01-060-5430
NSN 5960-01-189-1644
NSN 6650-00-466-1697
NSN 5960-01-222-4199
NSN 4140-01-474-5524
NSN 5975-01-050-8114
NSN 6620-01-371-1655
NSN 5945-01-346-2296
NSN 6620-00-880-7728