Click below to download Acme Thread Gages vs Stub Acme Thread Gages
Acme vs Stub Acme_20161215083528
An ACME thread has a screw thread profile with trapezoidal outlines and they are commonly used where large loads or high accuracy are required; for example, in a vice or lead screw. The ACME thread has a 29-degree thread angle with a thread height half of the pitch (P/2) and where the apex and valley are flat. An ACME thread profile is typically easier to manufacture than other thread series. This thread form also allows for the use of a split nut, which minimizes nut wear, however, the radial load on the nut is greater thus minimizing efficiency. Similar thread series are the square thread and buttress thread.
ANSI ASME B1.5 Acme standard