Spi 37-172-4 Plug Thread Gage M33x2 6H No Go

Product Description

The SPI 37-172-4 is a single-end plug thread gage used to inspect M33x2 metric threads to the 6H tolerance class. Configured as a No Go member, it verifies that an internal thread does not exceed its maximum material condition, confirming the thread is within the specified tolerance. The gage body measures 2.13 inches in height and 1.3 inches in width and length, and weighs 0.441 pounds. Traceability certification is provided to ANSI standards referenced to NIST. A handle is not included with this gage and must be sourced separately. Machinists, quality control inspectors, and precision tool specialists use this gage in production and inspection environments.

This plug thread gage is suited for inspecting M33x2 internally threaded components in manufacturing, machining, and precision fabrication settings. It is used wherever metric thread verification is required to 6H tolerance, including work on threaded bores in mechanical assemblies, hydraulic fittings, and industrial equipment. The single-end No Go configuration allows targeted go or no-go inspection without a combined handle gage setup, making it practical for dedicated inspection stations or field verification use.

Key Features

• No Go member for M33x2 metric internal thread inspection to 6H tolerance class
• Single-end design for dedicated No Go verification without a double-end setup
• ANSI traceability certification included, referenced to NIST standards
• Compact form: 2.13 inches height, 1.3 inches width and length
• Handle not included, compatible with standard plug gage handles sold separately

Compatibility

Designed for use with standard plug gage handles compatible with the M33x2 thread size range. No specific handle or system compatibility was provided in the product data.

Installation Notes

Plug thread gages should be handled and stored carefully to prevent damage to the precision ground surfaces. Before use, clean both the gage and the threaded bore to remove chips, cutting fluid, and debris. Apply light gage oil when appropriate to reduce wear during inspection. Thread gaging should be performed by qualified inspection personnel following applicable shop standards and ANSI gaging practices.