Vermont Gage 911208900 Class Zz Minus Plug Pin Gage 0.089 in

Product Description

The VERMONT GAGE 911208900 is a Class ZZ Minus plug pin gage machined from steel with a black oxide finish. It measures 0.0890 inches in diameter and is used to verify that a hole or bore does not exceed its maximum allowable size — the NoGo function in standard Go/NoGo inspection practice. The gage holds a tolerance of 0.0002 inches, which is consistent with Class ZZ specifications for this diameter range. Each unit ships with a Certificate of Accuracy traceable to NIST, making it suitable for use in calibrated inspection environments. Overall length is 2 inches. The black oxide coating provides mild corrosion resistance and reduces glare during use.

This pin gage is used in dimensional inspection applications where a technician or quality control professional needs to confirm a hole is within its maximum material condition. Typical uses include verifying drilled, reamed, or punched holes in metal, plastic, or composite workpieces. It is also used to set and verify micrometers, verniers, and other measuring devices requiring a reference standard of known diameter. Suitable for shop floor inspection, tool room use, and calibration support tasks across manufacturing, machining, and mechanical assembly environments.

Key Features

• Class ZZ Minus tolerance designation — engineered for NoGo inspection use
• 0.0890 inch nominal diameter with 0.0002 inch tolerance
• Steel construction with black oxide finish for durability and corrosion resistance
• 2 inch overall length for easy handling in standard pin gage handles or as a standalone gage pin
• Includes Certificate of Accuracy with NIST traceability for calibrated inspection compliance

Compatibility

Designed as a NoGo inspection gage for holes and bores nominally sized at 0.0890 inches. Also functions as a reference standard for setting micrometers, verniers, and other precision measuring devices requiring a traceable diameter reference.

Installation Notes

Pin gages are handled and used by quality control technicians, machinists, and metrologists — no power tools or electrical shutoff is required. Handle the gage pin by its ends or a gage handle to avoid transferring oils from skin contact to the measuring surface, which can affect readings. Store in a protective case away from other metal tools to prevent nicks or scratches that would compromise dimensional accuracy. Verify the Certificate of Accuracy is on file and within your facility calibration interval requirements before placing the gage into service.