Usa 2-1/2" overseas metric 63.5mm
No other part numbers with same form, fit, and function found.
A fitting having three connections with the branch connection fixed at 90 degrees (1.5705 radians) to the run. The connections have standard pipe threads or 1s unthreaded and designed to accommodate a pipe. It may have side inlet(s). It is used as a junction at the intersection of pipe or pipe fittings.
NSN 5910-01-581-8585
NSN 7035-00-679-9027
NSN 6320-00-242-3300
NSN 5975-01-146-4796
NSN 6135-01-602-8383
NSN 5905-01-121-4264
NSN 6130-01-471-7817
NSN 6110-00-400-6780
NSN 5965-01-519-5159
NSN 5915-00-240-3812
NSN 6110-01-033-7557
NSN 5910-01-128-2667