Spi 34-239-4 Plug Thread Gage 10-24 6H No Go

Product Description

The SPI 34-239-4 is a single-end plug thread gage used to verify that internally threaded features do not exceed maximum material condition limits. Configured as a No Go gage, it checks that a threaded hole has not been cut too tight, confirming the thread falls within the tolerance band specified by the 6H classification under ANSI standards. The gage is machined from steel for durability and dimensional stability across repeated checks. It is sized for 10-24 unified coarse threads and accepts a Size 0 handle, which is sold separately. Quality control technicians, machinists, and inspection personnel use this gage in production and receiving inspection workflows.

This gage is suited for inspection of 10-24 UNC internally threaded components in light manufacturing, precision machining, and assembly operations. It is commonly used on the shop floor or at incoming inspection stations where thread conformance to ANSI tolerances must be verified before parts advance to assembly. The NIST traceability certification included with the gage supports ISO and quality management system documentation requirements.

Key Features

• No Go configuration checks that threaded holes are not over-toleranced beyond the 6H class limit
• Machined from steel for long service life and consistent dimensional accuracy
• Meets ANSI standards with NIST traceability certification included
• Single-end design for straightforward Go or No Go inspection workflows
• Accepts a Size 0 handle — handle not included, sold separately
• UNSPSC code 41111619 for procurement and catalog classification

Compatibility

Designed for inspection of 10-24 UNC internally threaded holes conforming to 6H class tolerances per ANSI standards. Compatible with standard Size 0 thread gage handles.

Installation Notes

Thread gages are handled by quality control technicians and machinists — no installation in the traditional sense is required, but proper use procedure should be followed. Attach the gage to a Size 0 handle before use; do not apply excessive force when engaging the gage with a threaded feature, as forced entry can damage the gage or give a false reading. Store the gage in a protective case away from moisture and contaminants to maintain calibration integrity. Reference the included NIST traceability documentation when logging gage use in a quality management system.