LEAD SCREW THREAD - AN OVERVIEW

Undercut: The taper descends at an ordinary angle from a typical-sizing head, but fulfills a flat bottom that sits on top of the screw entire body. ASME B18.2.9 "Straightness Gage and Gaging for Bolts and Screws" was produced to handle this problem. Per the scope of your typical, it describes the gage and course of action for checking bolt and scr