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The SPI 34-238-6 is a single-end Go plug thread gage designed to verify the minimum material condition of internal threaded features. It checks that a tapped hole meets the lower tolerance boundary of the 10-24 thread specification, confirming the thread will accept a mating fastener. Built from steel to resist wear during repeated use, this gage conforms to ANSI standards and ships with NIST traceability certification. It is used by machinists, quality inspectors, and manufacturing technicians wherever 10-24 threaded holes must be verified to 6H class tolerance. A Size 0 handle is required for use but is not included with this gage.
This gage is suited for inspection of 10-24 internal threads in production and quality-control environments. Typical applications include verification of tapped holes in sheet metal, machined components, and assembled hardware. The 6H tolerance class covers standard commercial and precision-fit fastener applications. Because this is a Go-only gage, it confirms the thread accepts a correctly sized fastener but does not check the maximum material condition. A separate No-Go gage is needed for full pass-fail thread inspection.
Designed for inspection of 10-24 internal threads to 6H class tolerance per ANSI standards. Requires a Size 0 thread gage handle, not included.
Thread plug gages are installed and used by machinists and quality-control inspectors following shop inspection procedures. Ensure the threaded workpiece is clean and free of chips or debris before gauging to prevent false readings or gage wear. Do not force the gage into a thread — hand torque only. Store gages protected from corrosion and calibrate on a schedule consistent with your quality management system requirements.
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