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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 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.
What is an ACME tap? • Create ACME threads (trapezoidal in shape) • Stronger than similarly sized square threads. • They allow rotation or transversing movement on equipment that carries heavy loads. • Common applications include: jacks, valves, and presses.
ACME thread calculator to find dimensions of general purpose single and multiple start ACME threaded rods and nuts. Calculation can be done for tolerance classes of 2G, 3G and 4G. Tolerance class 2G is the preferred class but if less play and backlash is needed, 3G or 4G can be selected.
Tap Drill Charts | ACME General Purpose (Full Profile) ACME Nominal Ø Pitch (TPI) Min (inch) Max (inch) 1/4 16 .1875 .1925 5/16 14 .2411 .2461 3/8 12 .2917 .2967 7/16 12 .3542 .3592 1/2 10 .4000 .4050 5/8 8 .5000 .5062 3/4 6 .5833 .5916 7/8 6 .7083 .7166 1 5 .8000 .8100 1-1/8 5 .9250 .9350 1-1/4 5 1.0500 1.0600 1-3/8 4 1.1250 1.1375 1-1/2 4 1. ...
