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 5975-01-537-1808
NSN 6645-01-260-7426
NSN 6620-01-031-3989
NSN 5945-00-481-5896
NSN 6220-01-212-4088
NSN 5835-01-472-5239
NSN 6110-00-961-1100
NSN 5930-00-305-1140
NSN 5855-00-256-5562
NSN 5990-00-412-0019
NSN 5999-01-166-8172
NSN 7035-01-509-1959