Spi 19-086-8 Class Zz Minus Plug Pin Gage 0.086 in

Product Description

The SPI 19-086-8 is a Class ZZ minus plug pin gage sized at 0.086 inches in diameter, designed for go/no-go dimensional inspection of small bores, holes, and precision openings. Manufactured from steel, this gage provides a tolerance of 0.0002 inches, conforming to the Class ZZ minus specification for lower-limit inspection work. Machinists, quality control technicians, and tool-and-die professionals use plug pin gages like this one to verify that a hole or bore meets the minimum acceptable size before assembly or further machining operations proceed.

This gage is suited for use in precision manufacturing environments, job shops, and inspection departments where tight dimensional control is required. It is appropriate for checking small-diameter features in metalworking, hydraulic component manufacturing, and general mechanical assembly. The 0.086-inch diameter makes it well suited for inspecting small pilot holes, pin clearances, and similar close-tolerance features found in both production and maintenance settings.

Key Features

• Class ZZ minus specification for lower-limit bore and hole inspection
• 0.086-inch diameter for small-bore and precision-hole gaging applications
• Tolerance of 0.0002 inches for accurate dimensional verification
• Steel construction for durability and dimensional stability
• Compact single-pin format compatible with standard pin gage handle sets

Compatibility

Designed as an OEM-style replacement or supplemental gage pin for use with standard pin gage handle sets and modular plug gage systems accepting pins of 0.086-inch diameter.

Installation Notes

Pin gages are handled and used by quality technicians and machinists following standard metrology practices. Clean the gage pin and the feature to be measured before use to prevent debris from affecting readings. Handle the pin with care to avoid dropping or contacting abrasive surfaces, as surface damage will affect gage accuracy. Store in a protective case away from moisture to preserve the steel surface and dimensional integrity.