ASME B1.5-1997 (R2014) PDF

When formulated prior to 1895, Acme screw threads were intended to replace square threads and a variety of threads of other forms used chiefly for the purpose of producing traversing motions on machines, tools, etc. Acme screw threads are now extensively used for a variety of purposes. This Standard provides for two general applications of Acme threads, namely, general purpose and centralizing.