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 5945-00-927-2925
NSN 5985-01-313-8891
NSN 5910-01-068-4472
NSN 6320-01-160-8578
NSN 6240-01-500-6260
NSN 5990-00-481-7208
NSN 6240-01-606-9998
NSN 6320-01-039-5891
NSN 5920-01-114-9811
NSN 5910-01-605-2233
NSN 5895-01-179-7021
NSN 6150-01-149-7580