Spi 29-132-8 Class Zz Plus Plug Gage 0.132 in Dia

Product Description

The SPI 29-132-8 is a Class ZZ Plus plug gage designed for precision hole diameter verification at 0.132 inches. Manufactured from steel, it provides a reliable go/no-go reference for machinists, quality control technicians, and tool-and-die professionals who need to confirm bore dimensions to a tolerance of 0.0002 inches. Class ZZ Plus gages fall within the lower end of the precision gage classification system, making them well suited for production-floor inspection of less critical tolerances while still delivering consistent, repeatable measurements in a compact, single-ended design.

This plug gage is used in machine shops, manufacturing facilities, and precision fabrication environments where small-diameter hole verification is part of standard inspection workflows. It is appropriate for checking drilled, reamed, or bored holes in metal components where the nominal diameter is 0.132 inches. Typical users include QC inspectors, CNC machinists, and maintenance technicians performing incoming or in-process dimensional checks.

Key Features

• 0.132 inch nominal diameter for small-bore hole inspection
• Class ZZ Plus tolerance rating of 0.0002 inches for production-level accuracy
• Steel construction for durability and wear resistance in shop environments
• Compact single-unit design suited for handheld inspection use
• Lightweight at 0.2 pounds for easy handling during repeated checks

Compatibility

Designed as an OEM-style plug gage for verifying 0.132 inch diameter holes in standard production and inspection applications across machining and fabrication environments.

Installation Notes

Plug gages are handled and used by machinists, QC technicians, and metrology personnel — no special installation tools are required. Keep the gage clean and lightly oiled when not in use to prevent corrosion and preserve measurement accuracy. Never force the gage into a hole; if it does not pass or stop cleanly, the bore should be re-inspected with a calibrated measuring instrument. Store the gage in a protective case away from impact, heat, and contaminants.