Vermont Gage 911225400 Class Zz Plug Pin Gage 0.2540 in

Product Description

The VERMONT GAGE 911225400 is a Class ZZ Minus tolerance plug pin gage machined from steel with a black oxide finish. It measures 0.2540 inches in diameter with an overall length of 2 inches and holds a tolerance of 0.0002 inches. This gage is used in NoGo inspection applications to verify that a drilled, reamed, or bored hole does not exceed its maximum allowable size. Each unit ships with a Certificate of Accuracy traceable to NIST standards, making it suitable for documented quality-control workflows in manufacturing and machining environments. Machinists, quality technicians, and toolroom personnel are the primary users.

This plug pin gage is designed for use in precision dimensional inspection tasks including NoGo hole inspection, setting micrometers, calibrating verniers, and verifying other measuring devices. The 0.2540-inch diameter corresponds to a common fractional and decimal drill size, making this gage relevant to a wide range of production and inspection setups in job shops, fabrication facilities, and manufacturing plants. It is a single-piece replacement gage suitable for bench or in-process inspection use.

Key Features

• Class ZZ Minus tolerance designation with 0.0002-inch tolerance for NoGo inspection use
• 0.2540-inch measurement diameter with 2-inch overall length
• Steel construction with black oxide coating for corrosion resistance and reduced light glare during inspection
• Includes Certificate of Accuracy with NIST traceability for documented QC compliance
• Single-piece gage sized for use with micrometers, verniers, and other precision measuring devices

Compatibility

Designed as a replacement or supplemental Class ZZ Minus plug pin gage for NoGo inspection applications, micrometer setting, and vernier calibration tasks requiring a 0.2540-inch diameter reference standard.

Installation Notes

Plug pin gages are handled and used by quality technicians and machinists and require no permanent installation. Clean the gage and the part being inspected before use to prevent debris from causing false readings. Store the gage in a protective case away from other metal tools to avoid surface damage. Periodic recalibration against NIST-traceable standards is recommended to maintain measurement integrity.