Thd is a class 3 fit
An internally threaded nut which has an internal seat or shoulder designed to engage the nut retaining flange of a union tailpiece. The threaded portion is used to engage the thread piece of a union, union elbor or the like. Excludes nut (1), tube coupling.
Classification: Copper screws, nuts, bolts, rivets, and other fasteners not threaded
NSN 5915-00-051-6923
NSN 6645-01-541-5696
NSN 4140-01-321-7853
NSN 4140-01-330-4137
NSN 5920-00-308-5681
NSN 5915-01-622-3588
NSN 5915-00-864-7178
NSN 7035-01-359-3915
NSN 5975-00-146-6555
NSN 5930-01-317-8557
NSN 6610-01-314-3659
NSN 7035-00-173-2281