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Acme is a trapezoidal thread profile with a 29° V angle, defined in ASTM B1.5. It is the most popular thread used for traversing linear motion (For example, leadscrews and power screws) due to its ability to withstand large loads and ease of manufacturing.
The following table defines recommended industry standard sizes for External ACME General Purpose Threads per American National Standard ASME/ANSI B1.5. There are three classes of General Purpose ACME threads, 2G, 3G, and 4G each class provides some clearance on all standard size diameters for free movement, and are used in assemblies with the ...
ACME thread calculator to calculate dimensions of general-purpose single and multiple start ACME threaded rods and nuts for tolerance classes of 2G, 3G and 4G.
Acme threads are a commonly used thread profile in power screws for driving loads and transmitting power. However, designing a durable and efficient threaded system using this profile requires precise calculations to ensure it can withstand the intended loads.
Pre-finished 3d models of your ACME thread according to ANSI / ASME B1.5-1977 in your desired thread size. Download in STEP or SolidWorks format.
Standard sizes for External ACME General Purpose Threads per American Standard ASME/ANSI B1.5. Major, minor and pitch diameter are given in the table for 2G, 3G and 4G tolerance classes.
This ACME Thread General Purpose Design Calculator will determine the three classes of General Purpose, 2G, 3G, and 4G, for the external and internal threads.
