2-64 Thread

2-64 UNC-3A Thread Ring Gage, HSS Set Go & No-Go DC #31604

Thread Ring Gage Set 2-64 Class UNC-3A; One each Go & No-Go members Precision Thread Gage made of High Speed Steel then hardened. Picture is representative of part,  We have 5 sets only.  Brand is; DC Swiss  Gage diameter is 16.4mm