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 5960-00-193-6867
NSN 7035-01-513-9502
NSN 6150-01-080-9384
NSN 6145-00-196-1394
NSN 6135-00-838-7008
NSN 6610-00-241-9007
NSN 4140-01-464-5932
NSN 5910-00-061-0048
NSN 6135-00-351-8606
NSN 5925-01-353-0351
NSN 5935-01-201-3912
NSN 5975-01-343-2857