Spi 34-465-5 Threaded Ring Gage M3x0.5 Metric 6G Go

Product Description

The SPI 34-465-5 is a single-ring threaded ring gage used to verify external thread conformance on M3 x 0.50 metric fasteners and threaded components. Classified as a Go gage to Class 6G tolerance, it confirms that a threaded workpiece falls within the acceptable size envelope for proper mating fit. The gage is manufactured from Oil Hardened Non-Shrinking Steel (OHNS), a tool steel grade chosen for its dimensional stability and wear resistance under repeated inspection use. An NPL Traceability Certification is included, making this gage suitable for use in quality systems that require documented measurement traceability. Machinists, quality technicians, and toolroom inspectors are the primary users.

This gage is applied in machine shops, manufacturing cells, and inspection departments wherever M3 x 0.50 metric external threads must be verified before assembly or shipment. The Go designation means the gage must pass completely over the thread to confirm the thread is not oversize. It is a single-ring design, covering the Go function only. Applications include incoming inspection of fasteners, in-process thread verification on CNC-turned parts, and final inspection of threaded assemblies in aerospace, automotive, and general manufacturing environments.

Key Features

• Go gage confirms M3 x 0.50 external threads are within Class 6G tolerance
• Single-ring design for dedicated Go inspection function
• Oil Hardened Non-Shrinking Steel (OHNS) construction for wear resistance and dimensional stability
• NPL Traceability Certification included for use in documented quality systems
• UNSPSC Code 41111619 for procurement classification

Compatibility

Designed for inspection of M3 x 0.50 metric external threads to Class 6G tolerance. Compatible with any workpiece requiring Go thread verification per metric thread standards.

Installation Notes

Thread ring gages are precision inspection instruments and should be handled, stored, and used by trained quality or toolroom personnel. Clean threads and gage bore thoroughly before use to prevent debris from causing false readings or accelerating wear. Do not force the gage over a thread that does not pass freely, as this can damage the gage and produce inaccurate results. Store in a protective case away from temperature extremes to maintain calibration integrity.