Spi 34-227-9 Plug Thread Gage 6-32 6H No Go

Product Description

The SPI 34-227-9 is a single-end No Go plug thread gage designed to inspect 6-32 unified coarse internal threads to 6H tolerance class. Made from steel, this gage is used to verify that a threaded hole does not exceed the maximum material condition — meaning the No Go member should not enter an acceptable thread. It is a precision inspection tool intended for quality control and production floor use, not for cutting or forming threads. The gage ships without a handle; a Size 0 handle is required separately for operation. Traceability certification to NIST standards is included.

This gage is suited for inspection of small-diameter threaded holes in machined components, assemblies, and manufactured parts where 6-32 thread compliance is required. Typical users include machinists, quality control technicians, and manufacturing engineers working in precision fabrication, aerospace, electronics, and general metalworking environments. The single-end configuration checks only the No Go condition, making it a focused rejection tool for thread verification workflows.

Key Features

• No Go member confirms threads do not exceed maximum material tolerance for 6H class
• Steel construction for durability and dimensional stability under repeated use
• NIST traceability certification included for documentation and calibration records
• Conforms to ANSI and NIST standards for thread gage inspection
• Single-end design for dedicated No Go inspection in high-volume QC applications
• Requires Size 0 handle, sold separately, for proper handling during inspection

Compatibility

Designed for inspection of 6-32 unified coarse internal threads manufactured to 6H tolerance class per ANSI standards.

Installation Notes

Thread gages are inspection instruments, not installation hardware. No power source or lockout is required. Handle the gage carefully to avoid dropping or mechanical impact, which can alter dimensional accuracy. Do not force the No Go member into a threaded hole; resistance or non-entry is the expected pass condition. Periodic recalibration against NIST-traceable masters is recommended to maintain measurement integrity.