Vermont Gage 111456250 Class Zz Minus Plug Pin Gage

Product Description

The VERMONT GAGE 111456250 is a Class ZZ Minus plug pin gage designed to check hole and bore dimensions in a NoGo inspection role. Manufactured from steel with a 10 micro finish, it measures a nominal diameter of 0.5625 inches and holds a tolerance of 0.0002 inches (0.000200 decimal inch). The overall length is 2 inches, making it a compact, hand-held gage suited for bench and floor inspection work. Each unit ships with a Certificate of Accuracy traceable to NIST, confirming it meets Class ZZ dimensional standards. Machinists, quality control technicians, and tool room personnel are the primary users.

Class ZZ Minus plug gages are used in NoGo inspection applications to verify that a bore or hole does not fall below the minimum acceptable size. They are also used to calibrate and verify micrometers, verniers, and other measuring devices. Typical environments include production floors, inspection labs, and tool rooms where repeatable dimensional verification of machined parts is required. The 0.5625-inch diameter makes this gage appropriate for workpieces machined to that nominal bore size.

Key Features

• Class ZZ Minus tolerance class — 0.0002 inches tolerance for NoGo inspection use
• Steel construction with 10 micro surface finish for accurate, repeatable measurement
• 0.5625-inch nominal diameter, 2-inch overall length
• Certificate of Accuracy included with NIST traceability
• Compatible with setting micrometers, verniers, and other precision measuring devices

Compatibility

Designed for use in NoGo bore inspection and as a setting reference for micrometers, verniers, and other precision measuring devices requiring a 0.5625-inch diameter reference standard.

Installation Notes

Plug pin gages are handled and used by quality control technicians and machinists; no installation tools or power sources are required. Keep the gage clean and lightly oiled when not in use to prevent corrosion and maintain surface finish integrity. Do not force the gage into a bore — if resistance is felt, remove and inspect both the gage and the workpiece. Store in the supplied case or a protected location to avoid nicks or burrs that would compromise dimensional accuracy.