Spi 19-765-7 Class Zz Minus Plug Pin Gage 0.765 in

Product Description

The SPI 19-765-7 is a Class ZZ minus plug pin gage machined to a nominal diameter of 0.765 inches with a tolerance of 0.0002 inches. Plug pin gages are precision measuring tools used to verify that a drilled, reamed, or bored hole falls within a specified tolerance range. The minus designation means the gage is ground to the lower limit of the tolerance band, allowing inspectors and machinists to confirm minimum hole size acceptance. Constructed from steel, this gage delivers the durability and dimensional stability required for repetitive inspection work in a shop or field environment.

This gage is suited for quality control and dimensional inspection in manufacturing, machining, and fabrication settings. It is used wherever a 0.765-inch nominal hole diameter must be verified against a dimensional specification. Typical users include machinists, tool-and-die makers, quality assurance technicians, and precision measurement professionals working in production or job-shop environments.

Key Features

• Class ZZ tolerance class — the standard for general-purpose go/no-go inspection applications
• Minus designation — ground to the lower tolerance limit for minimum hole size verification
• 0.765-inch nominal diameter with 0.0002-inch tolerance for precise fit confirmation
• Steel construction for dimensional stability and long service life under repeated use
• Compact and lightweight at 0.2 pounds — easy to handle during inspection routines

Compatibility

Designed as a general-purpose Class ZZ minus plug pin gage for use in any inspection or quality control application requiring verification of a 0.765-inch nominal hole diameter.

Installation Notes

Plug pin gages require no installation but should be handled and stored with care to prevent damage to the precision-ground surface. Clean the gage and the hole being inspected before use to ensure accurate readings. Do not force the gage into an undersized hole, as this can damage the ground surface and compromise dimensional accuracy. Periodic recalibration against a traceable standard is recommended to maintain measurement integrity.