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Sti
Thread Plug Gages - Unified Sizes |
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KATO STI Thread Plug Gages are used to check the accuracy of
the tapped hole. If the tapped hole is correct, the finished thread
will also be accurate when the insert is installed. It is not necessary
to gage the installed insert.
You will note that both “Working Gages” and “Reference Gages” are
shown tabulated. Working Gages are recommended for use with production
since their greater tolerance allows for more wear.
Reference Gages have pitch diameters at or very close to basic sizes
and are to be used as master gages. |
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NOTES:
1. The Working Gage “GO” member has a .0002 wear allowance on the
pitch diameter.
2. Gaging of the tapped thread is specified because a standard gage
may not freely enter an installed insert. The insert will seat itself
once a bolt or screw is installed and tightened. (REF. NASM33537.)
3. KATO STI Gages comply with A-A-59158.
4. The “GO” member checks basic pitch diameters, major diameter minimum
and lead. The “HI” member checks maximum pitch diameter. Minor diameter
is checked separately with a graduated pin set, for example. |
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Sti
Thread Plug Gages - Metric Sizes |
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| Kato STI Thread Plug Gages are used to check the accuracy
of the tapped hole. If the tapped hole is correct, the finished
thread will also be accurate when the insert is installed. It
is not necessary to gage the installed insert. |
 |
|
Notes:
1. Gaging of the tapped thread is specified because a standard
gage may not freely enter an installed insert. The insert will
seat itself once a bolt or screw is installed and tightened.
2. The "GO" member checks basic pitch diameters, major
diameter minimum, and thread lead. The "HI" member
checks maximum pitch diameter. The minor diameter is checked
separately with a graduated pin set, for example. |
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