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 5965-01-625-7533
NSN 6135-01-255-9129
NSN 6610-01-514-8898
NSN 5855-01-659-0293
NSN 6620-01-446-7290
NSN 2925-01-322-9780
NSN 5910-01-429-1059
NSN 5945-00-898-7807
NSN 5990-01-191-9624
NSN 6650-01-114-4663
NSN 5950-01-394-0993
NSN 5985-01-181-6681