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 5945-00-115-7174
NSN 5999-01-392-0874
NSN 5925-01-106-3641
NSN 5950-01-220-6202
NSN 5985-01-179-0671
NSN 4140-01-615-2240
NSN 5925-01-342-3502
NSN 5855-01-224-7975
NSN 6105-01-479-5494
NSN 5930-01-640-8027
NSN 5999-01-495-4041
NSN 5950-01-383-2656