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 5950-01-619-3846
NSN 5905-00-536-1056
NSN 5996-01-369-9209
NSN 5925-01-064-4712
NSN 5960-00-066-2573
NSN 6240-00-143-4782
NSN 5945-00-519-0768
NSN 2925-01-564-8043
NSN 5945-00-441-9681
NSN 5930-01-328-2808
NSN 6145-00-878-7503
NSN 6110-01-544-1210