Spi 19-293-0 Class Zz Minus Plug Pin Gage 0.293 in

Product Description

The SPI 19-293-0 is a Class ZZ minus plug pin gage with a 0.293-inch nominal diameter, designed for go/no-go inspection of machined holes, bores, and internal features. It carries a minus tolerance of 0.000200 inches (0.0051 mm), conforming to Class ZZ gage standards suitable for general-purpose shop inspection. Machined from steel, this pin gage is used to verify that a hole or bore falls within its lower acceptable limit. Machinists, toolmakers, quality control inspectors, and production floor technicians use pin gages as a fast, reliable method to check dimensional compliance without the need for electronic measurement instruments.

This gage is suited for use in precision machining environments, fabrication shops, and quality inspection stations. Class ZZ minus gages are typically applied when checking that a hole is at least at its minimum acceptable size. The 0.293-inch diameter addresses a common range of drilled, reamed, or bored hole diameters encountered in general metalworking and mechanical assembly operations. It is used as a standalone go gage or as part of a complete pin gage set in shop-floor dimensional inspection routines.

Key Features

• Class ZZ minus tolerance of 0.000200 inches for general-purpose shop inspection
• 0.293-inch nominal diameter covers common drilled and reamed hole sizes
• Steel construction for durability in production and inspection environments
• Compact and lightweight at 0.2 pounds for easy single-hand use
• Sold individually — package quantity of 1

Compatibility

Designed as a general-purpose Class ZZ minus plug pin gage for dimensional inspection of holes and bores with a 0.293-inch nominal diameter in standard machining and fabrication applications.

Installation Notes

Pin gages are handled by quality control inspectors and machinists and require no installation in the traditional sense. Before use, clean the gage and the hole being inspected to remove chips, oil, and debris that could affect measurement accuracy. Never force a pin gage into a hole — doing so can damage both the gage and the workpiece. Store pin gages in a protective case away from heat sources and other tooling to prevent wear and corrosion that would compromise tolerance integrity.