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 2925-01-159-8312
NSN 6130-01-132-6755
NSN 5998-01-568-8585
NSN 6620-01-260-9142
NSN 5915-00-827-8383
NSN 5965-00-296-1808
NSN 5965-00-592-0812
NSN 4140-01-400-3610
NSN 5930-01-171-7277
NSN 5975-01-026-8970
NSN 6645-01-060-2081
NSN 5920-01-604-9426