Spi 19-817-6 Class Zz Minus Plug Pin Gage 0.817 in

Product Description

The SPI 19-817-6 is a Class ZZ minus plug pin gage with a 0.817-inch nominal diameter, designed for go/no-go dimensional inspection of bored holes, drilled features, and machined openings. Manufactured from steel, it delivers a tolerance of 0.0002 inches, placing it within the Class ZZ specification for general-purpose inspection work. This gage allows quality control technicians and machinists to quickly verify whether an opening falls within acceptable dimensional limits without the need for complex measuring setups.

This pin gage is suited for use in machine shops, fabrication facilities, and manufacturing quality control environments. It is applied wherever a 0.817-inch diameter hole or feature must be verified to dimensional specification during in-process or final inspection. The minus designation indicates the gage is ground to the lower tolerance limit, making it appropriate for confirming minimum acceptable hole size.

Key Features

• Class ZZ tolerance grade at 0.0002 inches for general-purpose inspection applications
• Minus gage designation confirms lower-limit dimensional compliance
• 0.817-inch nominal diameter for direct go/no-go hole verification
• Steel construction for durability in shop environments
• Single-piece packaging suitable for individual replacement or kit supplementation

Compatibility

Designed as a standard Class ZZ plug pin gage for use in general-purpose dimensional inspection of machined holes and bored features requiring a 0.817-inch diameter check.

Installation Notes

Pin gages are handled and applied by quality control technicians and machinists familiar with go/no-go inspection methods. Clean the gage and the feature being checked before use to remove chips, coolant, or debris that can affect measurement accuracy. Do not force the gage into a feature; entry should require only light hand pressure consistent with go/no-go inspection practice. Store the gage in a protected case away from other metal tools to prevent surface damage that could affect tolerance integrity.