3/8th-10 Modified Thread Pitch

DeeRay86

DeeRay86

Active member
I have a 3/8-10 Modified Gulyassy and two guys, customers that have a different 3/8-10 pitch "The peak of the threads are sharp instead of flat. I cant find a specific "Modified" Tap. Will a regular 3/8 10 Tap work for modified taps? I dont see how and like I said I cant find a "Modified" Tap. Any links would be appreciated. My pin has a flat top at the peak of the thread, where as others have a sharp pointed edge at the top of the thread. Haven't seen many pins like mine. Thanx again guys
 
DeeRay86 said:
I have a 3/8-10 Modified Gulyassy and two guys, customers that have a different 3/8-10 pitch "The peak of the threads are sharp instead of flat. I cant find a specific "Modified" Tap. Will a regular 3/8 10 Tap work for modified taps? I dont see how and like I said I cant find a "Modified" Tap. Any links would be appreciated. My pin has a flat top at the peak of the thread, where as others have a sharp pointed edge at the top of the thread. Haven't seen many pins like mine. Thanx again guys
Click to expand...
3/8x10 Acme.
 
DeeRay86 said:
I have a 3/8-10 Modified Gulyassy and two guys, customers that have a different 3/8-10 pitch "The peak of the threads are sharp instead of flat. I cant find a specific "Modified" Tap. Will a regular 3/8 10 Tap work for modified taps? I dont see how and like I said I cant find a "Modified" Tap. Any links would be appreciated. My pin has a flat top at the peak of the thread, where as others have a sharp pointed edge at the top of the thread. Haven't seen many pins like mine. Thanx again guys
Click to expand...

To add clarity to Mr. Webb's response, it sounds like your G cue uses an Acme thread. Acme thread are not a modified thread, the are a trapezoidal thread pitch that has been used in industry for a century or more. Acme thread are generally a feed thread, though two major uses are in c-clamps and screw jacks.

The common 3/8-10 modified thread in cues is probably not used anywhere else. It is a vee thread, but instead of a 60deg profile, it uses a sharper profile with a minor diameter that creates a flat bottom. I don't miss this thread because some of it makes sense for wood.
 
DeeDeeCues said:
To add clarity to Mr. Webb's response, it sounds like your G cue uses an Acme thread. Acme thread are not a modified thread, the are a trapezoidal thread pitch that has been used in industry for a century or more. Acme thread are generally a feed thread, though two major uses are in c-clamps and screw jacks.

The common 3/8-10 modified thread in cues is probably not used anywhere else. It is a vee thread, but instead of a 60deg profile, it uses a sharper profile with a minor diameter that creates a flat bottom. I don't miss this thread because some of it makes sense for wood.
Click to expand...
Yes, Thank you guys.
 
You must log in or register to reply here.
Back
Top