Spi 19-265-8 Class Zz Minus Plug Pin Gage 0.265 in

Product Description

The SPI 19-265-8 is a Class ZZ minus plug pin gage with a nominal diameter of 0.265 inches and a tolerance of 0.0002 inches. Plug pin gages are single-ended or double-ended cylindrical gauging tools used to verify that a drilled, reamed, or bored hole falls within a specified dimensional tolerance. The minus designation means the gage is ground undersized relative to the nominal dimension, making it suitable for go/no-go inspection work where tight tolerance verification is required. Constructed from steel, this gage is intended for use by machinists, tool and die makers, quality control inspectors, and precision manufacturing technicians.

Class ZZ plug gages are the most commonly used class for general-purpose inspection in production and job-shop environments. This 0.265-inch diameter gage suits applications where hole size conformance must be verified quickly and accurately, such as checking clearance holes, pilot holes, and precision bores in metal, plastic, or composite components. It is well suited to incoming inspection, in-process quality checks, and final dimensional verification on the shop floor or in a quality lab.

Key Features

• Class ZZ tolerance class for general-purpose production inspection
• Minus designation — ground undersized for go-side gauging applications
• 0.265-inch nominal diameter with 0.0002-inch tolerance
• Steel construction for durability and dimensional stability
• Compact, single-piece form for fast, repeatable hole checks

Compatibility

Designed as a general-purpose Class ZZ minus plug pin gage suitable for verifying 0.265-inch nominal diameter holes in standard production and inspection applications.

Installation Notes

Plug pin gages are used by quality control inspectors and machinists and require no installation in the traditional sense. Before gauging, ensure the gage and workpiece are clean and free of burrs, chips, or coolant that could affect the measurement. Handle the gage by the knurled or non-gauging surfaces only to avoid introducing thermal expansion error from hand heat. Store the gage in a protective case when not in use to prevent nicks or corrosion that would compromise accuracy.