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Thread Gage Reference Sheet

Alpha Thread Gage, Inc.

Mailing address:

  PO Box 261
 

 Royal Oak, MI  

  48068-0261

E-MAIL: alphathread@aol.com

Leading the pack in the thread gage industry.

 

PHONE (248) 585-5800 FAX (248) 583-9800

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REFERENCE SHEET

Reference Sheets Available Thread Gage Tolerances- Class Y Tolerances ] Thread Gage Tolerances- Class W Tolerances ] Thread Gage Tolerances- Class X Tolerances ] Metric Thread Gages-Thread Rings & Setting Plugs ] Metric Thread Gages-Thread Work Plugs ] American National Taper Pipe Thread Gages-NPT ] Pipe Thread Gages ] Unified Thread Gages- Thread Work Plugs- Pitch Diameter Chart ] Unified Thread Gages- Thread Ring and Setting Plugs ] [ Gage Pipe Plugs- Internal and External ]

   
internal  
Internal Threads For gaging internal internal taper threads, the plug gage is screwed up tight by hand into the internal thread of the product. The thread is within the permissible tolerance when the gaging notch of the working plug gage is not more than 1 turn, large or small, from being flush with the end of the thread.
external  
external taper threads In gaging external taper threads, the ring gage is screwed up tight by hand on external thread of product. The thread is within the permissible tolerance when the gaging face of the working ring gage is not more than 1 turn, large or small, from being flush with the end of the thread.
   
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