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4-Participant
Sep 3, 2025 3:25 PM UTC
Question

Fractional Thread Callout on External Threads

Currently using Creo 11.  I've found some posts, but no solutions.  Is there a way to automatically show external cosmetic threads in their typical format such as 1/4"-20 instead of 0.250-20?  There was a post from years ago about editing the .hol table, but this method doesn't work as somewhere along the line PTC changed the format of the hole table.  Now in the table, there is only "BASIC_DIA".  If you edit the table to say 1/4 or "1/4", a value of 0 shows up in the hole note.

11 replies

Chris3
21-Topaz I
Sep 3, 2025 4:48 PM UTC

You can create your own parameters in the hol file. For instance:

 

DEFAULT_CALLOUT_FORMAT_DATA
HOLE_TYPE THREAD DRILLED_DEPTH THREAD_DEPTH CSINK CBORE EXIT_CSINK CALLOUT_FORMAT
TAPPED YES NA NA NO NO NO {0:&HOLE_INSTANCE_COUNT&HOLE_INSTANCE_X_SYMBOL&HOLE_INSTANCE_SPACE} &MY_PARAM_HERE

 

and then in the hol file off to the right you have:

 

BOTCSINKANGLE   MY_PARAM_HERE
60                             2-56
60                             4-40
60                             6-32
60                             8-32
60                             10-24
60                             1/4-20

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4-Participant
Sep 3, 2025 5:58 PM UTC

When you show annotations for the feature I'm guessing this won't show up.  Wouldn't you have to create a manual note?

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Chris3
21-Topaz I
Sep 3, 2025 6:34 PM UTC

No. No manual note. You define the hole note in the .hol file. You can make the hole note say anything you want and then it shows up as the hole note annotation.

 

Article explaining hole note call outs:
https://www.ptc.com/en/support/article/CS28399 

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19-Tanzanite
Sep 3, 2025 5:49 PM UTC

In your hole tables, you can define the string you want to use under the parameter FASTENER_ID and call it out with the token &SCREW_SIZE, e.g.:

pausob_1-1756921708850.png

 

 

 

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4-Participant
Sep 3, 2025 8:00 PM UTC

Can't figure out how to get my note to show up as desired.  Can you take a look at the above and point out my mistakes?

 

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19-Tanzanite
Sep 4, 2025 4:07 AM UTC

Hey @HS_9187281, I finally noticed that you are talking about external threads.

Those notes are "semi-automatically" created in the drawing mode and pull in the information from the cosmetic thread feature.

But I don't think there is a way to attach a custom parameter from the .hol file to this cosmetic thread feature.

Therefore, I don't think what you are asking about is possible.

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14-Alexandrite
May 19, 2026 7:25 AM UTC

Hi Pausop
I’m suffering similar problems, but asking in the context of hole feature.
I made all the adaptions in the standard tables as mentioned.
The callout seems to be the text info presented in the yellow marked info.
My request would be that this is to be presented in the red marked Annotation instead.
I like to present it on a drawing in section views where the dimensions are with diameter dimensions with witness lines.

Do you have any idea how this can be implemented in practice?


 

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