THE GREATEST GUIDE TO TYPES OF LEAD SCREW

Possibly essentially the most commonplace are Nos. 1 and a pair of, Even though No. 0 are going to be necessary for many very small screws and 3 and four for large screws. (See The purpose / Bit Size Guideline for details about Phillips, sq. and Torx® travel sizes, along with the Socket Screw Products chart for details about hex critical sizes.) S