Spi 34-509-0 Threaded Ring Gage M24x2 Metric 6G Go

Product Description

The SPI 34-509-0 is a single-ring threaded ring gage designed to verify external thread conformance on M24 x 2.00 metric fasteners and components. Classified as a Go gage to Class 6G tolerance, it confirms that a threaded part falls within the acceptable minimum material condition for metric external threads. The gage body is manufactured from Oil Hardened Non-Shrinking Steel (OHNS), a tool steel chosen for its dimensional stability and wear resistance under repeated gauging cycles. A National Physical Laboratory (NPL) traceability certification is included, supporting quality management and inspection recordkeeping requirements. Machinists, quality control inspectors, and precision manufacturing technicians use this gage as part of incoming inspection and in-process thread verification routines.

This gage is suited for production and inspection environments where M24 x 2.00 metric external threads must be verified against Class 6G fit specifications. Typical applications include thread inspection on fasteners, threaded shafts, bolts, and precision machined parts used in industrial, automotive, and mechanical assemblies. The single-ring Go configuration is used alongside a No-Go gage to confirm full thread tolerance compliance. It is appropriate for both high-volume production floor inspection and tool room calibration use.

Key Features

• Go classification confirms external threads meet Class 6G minimum material condition
• M24 x 2.00 metric thread size for standard coarse-pitch metric fastener inspection
• Oil Hardened Non-Shrinking Steel (OHNS) construction resists wear and maintains dimensional stability
• NPL traceability certification included for compliance with documented quality systems
• Single-ring design for straightforward Go-only gauging tasks
• UNSPSC Code 41111619 for procurement and catalog classification

Compatibility

Designed for use with M24 x 2.00 metric external threads classified to Class 6G tolerance per standard metric thread gauging practice. Intended to be used as a Go gage in a Go and No-Go inspection pair.

Installation Notes

Threaded ring gages are handled and used by quality control inspectors and machinists — no installation in a system is required. Keep the gage clean and lightly oiled when not in use to prevent corrosion and preserve calibration integrity. Do not force the gage onto a thread; smooth hand engagement is the correct technique. Periodic recalibration against traceable master setting plugs is recommended to maintain measurement confidence over the gage service life.