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 5835-01-381-9565
NSN 5935-01-503-2371
NSN 6135-01-478-9316
NSN 5960-00-904-3835
NSN 6145-01-124-2124
NSN 5895-00-353-1795
NSN 6145-01-187-4976
NSN 5960-01-100-5065
NSN 5999-00-186-9314
NSN 5998-01-374-0190
NSN 5998-01-229-4032
NSN 6110-01-410-5076