M.55 Metric & .55UNM

0.55UNM Thread Plug Go Gage HSS #32598

0.55UNM Plug Go Gage pitch .125mm; UNM stands for “United National Miniature” the American Metric miniature Thread standard. Precision Thread Gage made of High Speed Steel then hardened. Picture is representative of part. ...

0.55UNM Thread Plug No-Go Gage, HSS #32599

0.55UNM Plug No-Go Gage pitch .125mm; UNM stands for “United National Miniature” the American Metric miniature Thread standard. Precision Thread Gage made of High Speed Steel then hardened. Picture is representative of part...