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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. ...
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.
External ACME Thread General Purpose Size Table Chart. 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 ...
ISO 2904 Metric Trapezoidal(ACME) Threads Comparison of ISO and DIN Standards.ISO metric trapezoidal screw threads standard, ISO 2904 - 1977 , describes the system of general purpose metric threads for use in mechanisms and structures.
Calculate your screw first? 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.
The tables following provide information designer’s need to apply 29° Stub Acme threads to projects properly. Please note that callouts for Stub Acme threads currently (2012) exist as: X.XXXX-TPI-NG-STUB-ACME-EXTERNAL for screw threads or X.XXXX-TPI-NG-STUB-ACME-INTERNAL for nut threads.
ASME B1.5-1997, Acme Screw Threads. 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.
