• CTC-20 CNC thread cycles 1
  • CTC-20 CNC thread cycles 2
  • CTC-20 CNC thread cycles 3
  • CTC-20 CNC thread cycles 4

CTC-20 CNC thread cycles

With this app you get a tool for generating CNC thread cycles.You get a complete table of all threaded thread measuring.
The app generates NC code with G76, G32, G33

It includes thread dimensions and tolerances of:


- ISO-Metrisch ( M1
- M68 ) DIN 13-1 / DIN 357

Toleranzen: M1
- M1,4 6h/5H M1,6
- M86 6g/6H


- GasRohr ( G1/8
- G6 ) Tolerances: medium
- Withworth ( W1/16
- W3 ) Tolerances: medium
- UNF UNO0
- ( U1 1/2 ) Tolerances: 2A/2B

Including all Tolerances for (Min. + Max.) of Outerdiameter, Flanksdiameter, and Corediameter.Also Including the Drill diameter. (example for Taping)



★★Also look at CTC-20Pro:★★

The app generates NC code with G76, G32, G33, G92 and CYCLE97It includes thread dimensions and tolerances of:It is also possible to generate NC-Code for cylindric, conical, and multiple threads.

Includet are:


- Thread nominal dimension:
- Including all Tolerances for (Min. + Max.) of Outerdiameter, Flanksdiameter, and Corediameter.
- Also Including the Drill diameter. (example for Taping)

of these Threadtypes:


- ISO-Metrisch ( M1
- M68 )Toleranzen:M1
- M1,4 6h/5HM1,6
- M86 6g/6H


- ISO-Metrisch Fine ( M1
- M1000 )Tolerances:Externalthread a3
- h9Internalthread A4
- H8


- GasRohr ( G1/8
- G6 ) Tolerances: medium


- G Withworth ( W1/16
- W3 ) Tolerances: medium


- BSF ( B3/16
- B3 )GB 55° British Standard FineTolerances:Extrnal: MediumInternal: Normal


- UNF ( UNO0
- U1 1/2 )USA 60° National Fine Tolerances: 2A/2B


- UNEF ( ENO12
- E1 5/8 )USA 60° National Extra-Fine Tolerances: 2A/2B


- UNC ( UNO1
- U4 )USA 60° National Coarse Tolerances: 2A/2B

Category : Tools

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Reviews (29)

Pau. M. Mar 16, 2022     

Excellent app! So easy to generate bspt gcode. Would be great if it could generate the tapering turning gcode as well, so the 2 match perfectly. Thanks again!

Dom. T. Jun 9, 2021     

I wok in the power generation industry and found this app very useful in comparing UN industry wide standards with company standards. A great easy generally ad free app. It also has a g code posting function for thread machining. This function can be toggled on and off.

kal. k. Nov 29, 2019     

Good app but when I am making R2inch BSPTT the G76 command giving the minor dia of thread with Z end length.according to bsptt standard minor dia should be made at 15.9mm distance (gauge length). See the standard BSPTT chart.

A. G. u. Oct 21, 2018     

Its a very good thread calculator. Just wish it would go into larger sizes over 4" Or 100MM

Muh. A. H. Oct 15, 2021     

Works great. Really helpful especially if you are reverse engineering a component.

ARA. K. Dec 29, 2019     

Super and best app for mechanical subject, especially for threading calculation... 5 stars rating is not enough... Liked it a lot...

G. D. May 23, 2019     

Good app, but doesn't show thread pitch. Will increase rating when updated.

Pet. C. Jul 17, 2020     

Saves a lot of time. Quick and simple

Rol. E. Sep 20, 2020     

Great work, it has it all! (BA is missd) thank you for such a grand App.

Jam. K. Apr 13, 2022     

It's a programmers dream. A must have for sure....

Mar. T. Dec 18, 2018     

Very handy for programming uncommon threads, love that it gives you options (g76, g92, g32).

Dee. V. Sep 14, 2020     

This app can make thread simple and easy brilliant app.

Kha. H. Sep 8, 2020     

Excellent app Very easy to use

Aja. R. Feb 7, 2021     

what is advantage of pro while everyone can find free software useful?

Mic. T. Nov 10, 2020     

Excellent app which they just keep improving

Dar. B. Jul 1, 2021     

Excellent for the job

B. v. H. Jul 1, 2021     

One of my most used applications. Keep up the good work!

Lee. H. Nov 26, 2021     

Find this app easy to use and very helpful

man. b. Oct 30, 2020     

It's Best and helpful for totally threading solution

sub. s. Aug 12, 2020     

Save lot of time .... Easy to use

Sac. B. Oct 9, 2020     

God one but still accurate dimension to be ensured

Hig. d. S. Sep 12, 2019     

A life saver. If I could give the app 6 stars I would

sun. p. May 22, 2022     

Square thread option not available

Shi. S. Dec 2, 2021     

Very usefull thanks thread calculator

Nel. C. Aug 22, 2020     

Works as described very handy

Pra. K. Dec 19, 2021     

Awesome app threading calculations Thanks...

Che. B. Feb 23, 2022     

Very good aap for threading

kal. k. Sep 1, 2020     

Very usefull app really nice to use app

N. P. Jan 12, 2019     

Very easy to use .