Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
Largest Manufacturing Technology Community on the Web
Stay Connected:
Can same size ring gage and plug gage fixed together?
- Thread starter yanshi
- Start date
- Replies 9
- Views 5,040
Gordon B. Clarke
Banned
- Joined
- May 29, 2010
- Location
- Denmark
If you can you have a big problem. Plug gages are made for internal threads and are thus larger than ring gauges that are for external threads.
I have though seen many try to screw the one in the other and seem surprised when they can't.
http://f-m-s.dk/4.02.pdf
The metric 6H/6g fit is basically the same as the US 2B/2A.
Eric M
Cast Iron
- Joined
- Nov 21, 2007
- Location
- Orlando, FL
A "work plug" inspects the product (the parts you are making); a "set plug" inspects the thread ring gage. As Gordon said, if you can fit your "work plug" into your thread ring gage, you have a problem. If you have thread ring gages, you should order the appropriate set plug at the same time, especially if it's a non-standard thread size. Most calibration houses will have set plugs for common-sized thread ring gages; not necessarily for special threads. Here is an article that may help explain how the different types of thread gages relate to each other: Quality 101: Thread Gages
Gordon B. Clarke
Banned
- Joined
- May 29, 2010
- Location
- Denmark
I'll just add to that the fact that set thread gauges are much more expensive than standard thread gauges as they must have a much higher degree of accuracy.
Thread set gauges are almost always only used on thread gauges with so small a diameter that they are nigh on impossible to measure to the accuracy necessary.
Gordon B. Clarke
Banned
- Joined
- May 29, 2010
- Location
- Denmark
I don't know how relevant this is to this thread but it might make it easier to understand.
Re nominal pitch diameter. All external thread pitch diameters are up to nominal pitch diameter (OK many have an allowance ensuring freedom of movement). Internal threads can go down to nominal pitch diameter but never below.
Many can probably find helpful information in this link.
http://f-m-s.dk/screw_thread_info.htm
Find nominal pitch diameter:
http://f-m-s.dk/2.01.pdf
This one is about the only one in inches.
http://f-m-s.dk/2.03 - inch version.pdf
and this is the metric version
http://f-m-s.dk/2.03.pdf
Re nominal pitch diameter. All external thread pitch diameters are up to nominal pitch diameter (OK many have an allowance ensuring freedom of movement). Internal threads can go down to nominal pitch diameter but never below.
Many can probably find helpful information in this link.
http://f-m-s.dk/screw_thread_info.htm
Find nominal pitch diameter:
http://f-m-s.dk/2.01.pdf
This one is about the only one in inches.
http://f-m-s.dk/2.03 - inch version.pdf
and this is the metric version
http://f-m-s.dk/2.03.pdf
Here I am sure to say the same size ring and plug gages can't be fixed together, here is a article talking about it : One Misunderstand About Testing Of Ring And Plug Gages |
Gordon B. Clarke
Banned
- Joined
- May 29, 2010
- Location
- Denmark
Interesting turn of events.
I know for a fact that dugudaxia and yanshi are one and the same person. What's going on?
Eric M
Cast Iron
- Joined
- Nov 21, 2007
- Location
- Orlando, FL
Testing to see if he (or she) get the same answer regardless of who asks it?
Fast learners, that is what's going on
Edit: Next they are going to ask how to improve their engrish:
" Our clients sometimes send our gages to their local lab to get calibration certificates, our gauges also can passed the test!"
Gordon B. Clarke
Banned
- Joined
- May 29, 2010
- Location
- Denmark
Not quite. It's a longer (and interesting)story but not sure if it is relevant to the forum.
I've certainly got to give the guy credit for innovation.
Similar threads
