ThreadPal - dimensions and tolerances for inch and metric screw threads
 
ThreadPal can pay for itself the first day you use it!  Calculates complete dimensional and tolerance data for the vast majority of thread types you'll ever encounter, with just the click of a mouse.
ME ThreadPal for fast thread calculations.

ThreadPal provides detailed calculations for:

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thirty-eight types of inch and metric threads                   thread types
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major diameter, minor diameter, pitch diameter
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measurement over wires
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inch and metric tolerances
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multiple-start threads
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coating and polishing allowances
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length of engagement
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thread height
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lead angle / helix angle
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thread percentage
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tap drills for cut and form taps

ThreadPal features:

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minimal typing
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inch or metric display
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graphical aids
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detailed printed report
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data export
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comprehensive user guide
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total support
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ThreadPal calculates dimensions for  the following thread types.

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Unified 60° Series
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UN includes UN, UNC, UNF, UNEF, UNS
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UNR includes UNR, UNRC, UNRF, UNREF, UNRS
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UNJ includes UNJ, UNJC, UNJF, UNJEF, UNJS
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ACME
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General Purpose
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Centralizing
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Stub
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BUTT - American National Standard Buttress 7° x 45°
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UNM - Unified Miniature Series
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NPT - American National Standard Taper Pipe Thread
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NPTF - American National Standard Dryseal Taper Pipe Thread
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NPSM - American National Standard Straight Pipe Thread for Fixtures and Free-Fitting Mechanical Joints
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NPSL - American National Standard Straight Pipe Thread for Locknuts and Loose-Fitting Mechanical Joints
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STI - Screw Thread Insert For Unified Coarse and Fine Pitch Series
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ISO 60° Series
M - Metric M and MS Profile
MJ - Metric MJ and MJS Profile
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Tr - ISO Metric Trapezoidal
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S - ISO Metric Buttress 3° x 30°
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Whitworth - includes British Standard Whitworth BSW, BSF, and Whitworth Special
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BSPT - ISO Taper Pipe
BSPP - ISO Parallel Pipe
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STI - Screw Thread Insert For ISO Metric Thread Series
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Pg - Metric Conduit Thread
 
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