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The SPI 37-114-6 is a single-end Go plug thread gage designed to verify internal M10x1.25 threads to the 6H tolerance class. The gage checks that a threaded hole falls within the acceptable upper limit of the tolerance band, confirming that a mating fastener will pass through without interference. It is a precision inspection tool used in machining, manufacturing, and assembly environments. The handle is not included and must be sourced separately. At 0.11 pounds and compact in size, the gage stores easily in a tool crib or inspection station. A traceability certification conforming to ANSI standards with NIST traceability is included with the part.
This gage is used to inspect M10x1.25 fine-pitch threaded holes to 6H class tolerances, a common specification in automotive, mechanical, and industrial fabrication. It is suited for production floor inspection, incoming quality control, and shop-floor verification wherever M10x1.25 internal threads must meet dimensional standards. The single-end Go configuration is typically used alongside a separate No-Go gage to complete a full pass-fail check on a threaded feature.
Designed for use with standard plug thread gage handles sized to accept this gage member diameter. Verify handle compatibility before ordering, as the handle is sold separately.
Thread gages are precision instruments and should be handled by qualified inspection or quality control personnel. Store the gage in a protective case away from abrasive materials and temperature extremes to maintain calibration integrity. Do not force the gage into a threaded hole; if the Go gage does not pass freely, the thread is out of tolerance and forcing it will damage the gage. Periodic recalibration against NIST-traceable masters is recommended to maintain measurement confidence.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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