Spi 19-059-5 Class Zz Minus Plug Pin Gage 0.059 in

Product Description

The SPI 19-059-5 is a Class ZZ minus plug pin gage machined to a 0.059-inch nominal diameter with a tolerance of 0.0002 inches. Pin gages in the Class ZZ minus designation are produced to a minus tolerance from nominal, meaning the gage diameter falls slightly below the stated size within the allowed tolerance band. This makes them well-suited for go/no-go inspection of holes, bores, and precision-drilled openings where tight dimensional control is required. The gage is constructed from steel and is intended for use by machinists, quality control technicians, and precision measurement professionals in manufacturing and inspection environments.

Class ZZ pin gages are the standard tolerance class used in general-purpose dimensional inspection. This gage is appropriate for checking hole diameter conformance on machined components, fixtures, tooling, and assemblies. It is commonly used on the shop floor or in inspection rooms where consistent, repeatable go/no-go checks are performed on production parts. At 0.059 inches, this gage covers a small-diameter range typical of drilled or reamed holes found in precision metalworking, electronics hardware, and light mechanical assemblies.

Key Features

• Class ZZ minus tolerance classification for below-nominal dimensional gaging
• 0.059-inch nominal diameter for small-bore inspection applications
• Tolerance of 0.0002 inches (0.0002 mm) for precise dimensional verification
• Steel construction for durability in production and inspection use
• Single-piece gage format for straightforward go/no-go hole checking

Compatibility

Designed as a standard Class ZZ minus plug pin gage for use in general-purpose hole and bore inspection applications requiring a 0.059-inch nominal diameter check.

Installation Notes

Pin gages are used by quality control and metrology personnel and do not require installation in the traditional sense. Handle the gage with clean, dry hands or lint-free gloves to prevent corrosion from skin oils. Store the gage in a protective case away from other metal tools to avoid surface damage that could affect measurement accuracy. Calibrate or verify against a traceable standard at regular intervals per your facility inspection procedures.