Vermont Gage 112407870 Class Zz Minus Plug Pin Gage 7.87 Mm

Product Description

The VERMONT GAGE 112407870 is a Class ZZ Minus plug pin gage manufactured from steel and used to verify that a bored hole or feature does not exceed its maximum allowable size. The "minus" designation means the gage is ground undersized within the Class ZZ tolerance band, making it appropriate for NoGo inspection applications where rejection of oversized features is the goal. At 7.87 mm diameter with a tolerance of 0.00508 mm, this pin gage delivers the tight dimensional control required for precision inspection work. Each unit ships with a Certificate of Accuracy traceable to NIST.

This pin gage is suited for use in quality control and inspection environments where bore diameters, hole sizes, and machined features must be verified against print tolerances. It is commonly used alongside set micrometers, verniers, and other measuring devices in tool rooms, machine shops, and manufacturing facilities. The 7.87 mm size fits within a range of standard bore inspection tasks in both production and incoming inspection settings. Licensed metrologists, quality technicians, and precision machinists are the typical end users.

Key Features

• Class ZZ Minus tolerance designation for NoGo bore inspection
• 7.87 mm measurement diameter with 0.00508 mm tolerance
• Steel construction for durability and dimensional stability
• 10 Microfinish surface coating for accurate contact and reduced wear
• Includes Certificate of Accuracy with NIST traceability
• Compatible with standard gage handle sets and measuring device setups

Compatibility

Designed for use with set micrometers, verniers, and other precision measuring devices as stated by the manufacturer. This pin gage is intended for NoGo inspection applications requiring Class ZZ tolerance control at 7.87 mm diameter.

Installation Notes

Pin gages should be handled with clean, dry hands or cotton gloves to prevent oils and debris from affecting measurement accuracy. Store the gage in its protective case when not in use to preserve the ground surface finish. Calibration intervals should follow your facility quality management system requirements and any applicable ISO or ASME B89 standards. Do not force the gage into a feature; if resistance is encountered beyond normal slip fit, the bore is likely undersize.