Inch Setting Plugs - Alameda

Manufacturer: Alameda

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PRODUCT FEATURES:

AGD (ANSI B1.16.) Standard Truncated Thread Setting plugs
Unified Thread Series (UNC-UNF-UNEF)
Certification of Conformance and Traceability is included with all ALAMEDA gages at no extra charge

HOW TO USE THREAD SETTING PLUGS:
The setting plug checks the pitch diameter of the ring and contacts the flanks
of the thread to the maximum major diameter of the screw. The major beyond
this is to be cleared in the ring.

As a positive check on this, modern practice is to use the truncated type setting
plug in which a portion of the major diameter has been reduced or truncated.
In use, the thread ring gage is set to fit the pitch diameter on the truncated
portion of the plug, then carefully screwed over the full form portion.

If the ring gage has proper clearance in the major diameter, there will be little
or no difference in the feel of the ring as it passes from one section of the plug
to the other.