Vermont Gage 111240200 Class Zz Minus Plug Pin Gage 0.4020 in

Product Description

The VERMONT GAGE 111240200 is a Class ZZ minus plug pin gage ground to a nominal diameter of 0.4020 inches with a tolerance of 0.0002 inches. Designed for NoGo inspection applications, this pin gage is used to verify that a hole or bore does not fall below the minimum acceptable limit. Manufactured from steel with a 10 microfinish surface coating, it delivers consistent, repeatable results when used alongside micrometers, verniers, and other precision measuring devices. Each gage ships with a Certificate of Accuracy with NIST Traceability, confirming that the tool meets the stated tolerance class right out of the package.

This plug pin gage is suited for quality control and inspection work in machine shops, manufacturing facilities, and precision fabrication environments. It is used by machinists, metrologists, and QC technicians who need reliable dimensional verification of bored holes, drilled passages, or machined features. The NoGo designation means this gage is applied as the rejection member in a go/no-go inspection pair, confirming that a workpiece bore has not been machined oversize. At 2 inches overall length, it is a compact, hand-held tool appropriate for bench inspection and in-process checks.

Key Features

• Class ZZ minus tolerance designation for NoGo inspection applications
• 0.4020 inch nominal diameter with 0.0002 inch tolerance
• Steel construction with 10 microfinish surface coating for precise, repeatable gauging
• Compatible with micrometers, verniers, and other precision measuring devices
• Includes Certificate of Accuracy with NIST Traceability
• Compact 2 inch overall length for bench and in-process use

Compatibility

Designed for use with standard go/no-go inspection setups and compatible with micrometers, verniers, and other precision measuring devices as noted by the manufacturer. Intended as the NoGo member in plug gage inspection pairs for bores and holes requiring 0.4020 inch diameter verification.

Installation Notes

Pin gages are handled and used by trained machinists or QC inspectors following established metrology practices. Store the gage in its protective case when not in use to prevent surface damage that could affect accuracy. Clean the gage and the workpiece bore before inspection to remove chips, coolant, or debris. Never force a plug gage into a bore; if it does not pass or reject freely under hand pressure, verify bore condition and gage cleanliness before re-checking.