Vermont Gage 112204380 Class Zz Minus Plug Pin Gage 4.38 Mm

Product Description

The VERMONT GAGE 112204380 is a Class ZZ minus plug pin gage machined from steel for precise dimensional inspection of bores and holes at 4.38 mm diameter. It carries a tolerance of 0.00508 mm, making it suitable for NoGo inspection applications where tight tolerances must be confirmed. The gage measures 2 inches in overall length and weighs 0.02 pounds. A Certificate of Accuracy with NIST traceability is included, supporting documented quality control programs. The 10 microfinish surface coating ensures consistent, repeatable contact during measurement. Licensed metrologists, quality technicians, and precision machinists rely on this type of instrument to verify workpiece conformance on the shop floor or in the inspection lab.

This plug pin gage is used in NoGo inspection routines to confirm that a bore or hole does not exceed its maximum allowable size. It is also suited for setting and verifying micrometers, verniers, and other measuring devices requiring a traceable reference standard. Typical applications include incoming inspection, in-process quality checks, and final inspection in precision machining, aerospace, automotive, and general manufacturing environments. The 4.38 mm diameter targets small-bore work where sub-hundredth-millimeter accuracy is required.

Key Features

• Class ZZ minus tolerance designation for NoGo inspection use
• 4.38 mm diameter with 0.00508 mm tolerance for tight-tolerance bore verification
• Steel construction with 10 microfinish surface coating for consistent gage contact
• 2 inches overall length for handheld use in standard inspection setups
• Includes Certificate of Accuracy with NIST traceability for documented QC compliance

Compatibility

Designed for use in NoGo inspection applications and for setting micrometers, verniers, and other measuring devices requiring a 4.38 mm Class ZZ minus reference standard.

Installation Notes

Plug pin gages are handled and used by quality technicians and metrology professionals following standard gage handling procedures. Store the gage in its protective case when not in use to prevent surface damage and corrosion. Clean contact surfaces before each use to avoid false readings caused by debris or contamination. Do not force the gage into a bore; if resistance is felt, remove and inspect both the gage and workpiece before proceeding.