Thread Chart: Tap Drill & CNC

5.1.1

Siberian Apps

4.00

651 reviews

50,000+
Downloads

Free

Thread chart, tap drill chart & CNC lathe calculators. Fast. Works offline.

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About Thread Chart: Tap Drill & CNC

Thread Chart: Tap Drill & CNC is a tools app developed by Siberian Apps.

Download Statistics

Thread Chart: Tap Drill & CNC has been downloaded 98 thousand times. In the last 30 days, the app was downloaded 780 times.

User Ratings

Thread Chart: Tap Drill & CNC is rated 4.00 out of 5 stars. The rating is based on 650 ratings.

App Information

Thread Chart: Tap Drill & CNC is FREE to download. The APK download size is 7.93 MB. The latest version available is 5.1.1. The last update was on July 27, 2026.

Technical Requirements

Thread Chart: Tap Drill & CNC requires Android 4.4+ or higher. The app has a content rating of Everyone. The app has been available on Google Play April 2019.

Description

The thread chart and tap drill reference you actually want on the shop floor. Thread Chart & CNC Calculator puts every thread standard, machining calculator and thread identifier in your pocket — ready in seconds, no internet required.

Machinists, CNC programmers and engineers use it daily: to identify an unknown thread by caliper measurement, look up tap drill sizes, calculate speeds and feeds, and reference specs across 27 thread standards — all without leaving the shop floor.

THREAD CHART & TAP DRILL CHART
Look up any thread size chart entry: pitch, TPI, major/minor diameter, tapping drill, clearance drill and more — and find the right drill bit size for any tap. From metric thread charts to UNC, UNF, UNEF, UNS, UN, BSW, BSF, BSPP, BSPT, NPT, NPTF, RC, ACME, Stub ACME, Trapezoidal, Buttress, Knuckle, Worm, API and other standards — all in one place.

THREAD IDENTIFIER BY MEASUREMENT
Got an unknown thread? Measure with calipers, enter the diameter and TPI — the app instantly matches it across all supported standards.

THREAD PROFILE DIAGRAMS
Clear diagrams for each thread type — see the geometry, understand the form, spot the differences between standards at a glance.

CNC & MACHINING CALCULATORS
Full speeds and feeds calculator: cutting speed, spindle speed (RPM), feed rate, feed per tooth, feed per revolution, machining time, material removal rate, cutting power, torque and depth of cut — for lathe turning, milling and general workshop setup.

GEOMETRY CALCULATORS
Cone dimensions, hex and square blanks, coordinate rotation, trig values and degree conversions.

ENGINEERING REFERENCES
GD&T drawing symbols, Fe-C diagram, material melting temperatures, hardness tables and bearing fits.

WORKS OFFLINE
Every thread chart, table and calculator works without a connection. Perfect for workshops, production floors, lathe and CNC setup where Wi-Fi isn't always an option.

FAVORITES
Save the threads and calculators you use most for instant access.

Built for machinists and real shop floor use — whether you're identifying a mystery thread, setting up a lathe or CNC job, calculating feeds and speeds, or just need a tap drill size fast.

Recent changes:
Added NKTP 1260 thread
New reference tables: cutter and drill point angles
Fixed UN/UNS thread tolerances
Bug fixes and interface improvements

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More data about Thread Chart: Tap Drill & CNC

Price	Free to download
Total downloads	98 thousand
Recent downloads	780
Rating	4.00 based on 650 ratings
Ranking	Not ranked
Version	5.1.1
APK size	7.93 MB
Number of libraries	17
Designed for Android	4.4+
Suitable for	Everyone
Ads	Contains ads

App Performance Report

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Alternative downloads for the Thread Chart: Tap Drill & CNC app

Thread Chart: Tap Drill & CNC compared with similar apps

Common keywords of similar apps

Lathe Calculators Standards Works Reference Shop Floor Fast Offline Identifier Machinists Unknown Measurement Tpi Uns Acme Diagrams Geometry Rate Material Setup Tables Thread Drill Chart Tap Cnc Calculator Machining Speeds Feeds Size Feed Diameter Cutting Speed

Keywords missing from this app

Sizes App Metric Screw Pro Tools Machinist Calculate Pitch Threads Charts Data Tolerances Machine Standard Fine Time Enter Fastener Turning Tool Calculated Calc Cut Ai Screws Internal Features Recent Wire Complete Ultra Drilling Hole Bolt Iso

Google Play Rating history and histogram

Rating history

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240

Downloads over time

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Thread Chart: Tap Drill & CNC has been downloaded 98 thousand times. Over the past 30 days, it averaged 26 downloads per day.

Changelog of Thread Chart: Tap Drill & CNC

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Developer information for Siberian Apps

Siberian Apps

kota1921@gmail.com

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Comments on Thread Chart: Tap Drill & CNC for Android

★★★★★ Phillip Lay · Mar 3, 2021

Like the update. Very useful at work. 5 stars. I Would like to see the hole size needed for the chosen thread make a return.

★★★★★ NAGA SUBRAMANIAN · Feb 15, 2022

Very much useful but I need BSW standard also.

★★★★★ 6.0 Powerstroke · Feb 2, 2025

I use this app at work mostly to figure out ID and OD for machining threads. So far it's worked great. I can't tell on the rest of the app as I haven't explored or needed the rest of it.

★★★★☆ D Lovett · Jun 9, 2022

Works great and tons of info. One more star if updates get made to go one step above everyone else in this space. Would be fantastic if the calculations that are auto generated are also applied to the thread profile image. For the moment we still get the typical image with formulas (5h/8, p/8, etc.), why not let the app do the rest of the calculations. Would gladly purchase a pro version if such a tool were available.

★☆☆☆☆ Astro Stars · Nov 14, 2019

Why there Is no English language. It looks like a good app. But I can't use.

Google Play Rankings for Thread Chart: Tap Drill & CNC

This app is not ranked

Technologies used by Thread Chart: Tap Drill & CNC

11 permissions · 17 libraries

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