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 5950-01-180-1357
NSN 6320-00-857-4073
NSN 5935-00-106-0905
NSN 5930-01-085-7376
NSN 6105-01-552-7878
NSN 5925-01-314-3084
NSN 6220-01-255-8915
NSN 5996-01-433-7045
NSN 4140-01-443-2391
NSN 6220-01-045-6265
NSN 6610-01-076-4800
NSN 5999-01-023-7997