Spi 34-364-0 Plug Thread Gage 8-32 3B Double End Go No Go

Product Description

The SPI 34-364-0 is a double-end plug thread gage used to verify the dimensional accuracy of 8-32 internally threaded workpieces. One end serves as the Go member and the other as the No Go member, allowing a technician to confirm both the minimum and maximum thread tolerance in a single tool. Manufactured to Class 3B standards and traceable to NIST, this gage is built from steel for durability in production and inspection environments. A handle is included. This tool is used by machinists, quality control inspectors, and precision manufacturing professionals who need reliable thread verification without separate instruments.

The 34-364-0 is suited for incoming inspection, in-process quality checks, and final acceptance testing wherever 8-32 UNC internal threads are specified. It is appropriate for use in job shops, production floors, and tool rooms that maintain NIST-traceable measurement records. The double-end configuration reduces handling time during inspection by combining Go and No Go functions on one gage body. It is compatible with standard plug gage handles and is packaged as a single unit.

Key Features

• Go and No Go ends on a single double-end gage body for efficient thread inspection
• Class 3B classification for tight-tolerance thread verification
• NIST-traceable calibration certification included
• Steel construction for wear resistance in production use
• Handle included — no separate purchase required

Compatibility

Designed for inspection of 8-32 UNC internally threaded holes to Class 3B tolerance requirements. Compatible with standard plug gage handles.

Installation Notes

Plug thread gages are used by quality control inspectors and machinists — no installation in the traditional sense applies. Store the gage in its protective case when not in use to prevent wear and contamination of the thread members. Do not force the No Go end into a conforming thread, as this indicates an out-of-tolerance condition and forcing can damage the gage. Recalibrate or return for NIST re-certification at intervals consistent with your facility quality management plan.