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We will be closed December 25-29 and January 1 for the Christmas and New Year's Holiday.

Long Form Certificates are $30.00 and $15.00 depending on the gage type. A Certificate of Conformance will be provided at no charge. Please add LFC to the cart if needed! They are located in the Long Form Certificate Category and in each Gage Category.

Please be sure to add your UPS or FedEx Collect account number in at checkout.

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STI - Screw Thread Insert Thread Plug Gages

Gage Sets = Go/NoGo w/Handle
Screw Thread Insert (STI) thread plug gages are used to insure the threaded hole complies to specification, normally either a 2B or 3B classification for ANSI and 4H or 5H classification for Metric. The thread designation refers to the insert thread so the size of the gage for the tapped hole is larger than the nominal size.

 

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