Vermont Gage 111449450 Class Zz Minus Plug Gage 0.4945 in

Product Description

The VERMONT GAGE 111449450 is a Class ZZ Minus tolerance plug pin gage designed for NoGo inspection applications. It measures a nominal diameter of 0.4945 inches with a tolerance of 0.0002 inches, making it suitable for verifying that a bored or reamed hole does not exceed its maximum allowable size. The gage is machined from steel and features a 10 microinch surface finish for consistent, repeatable contact. Each unit ships with a Certificate of Accuracy traceable to NIST, meeting documentation requirements for controlled inspection environments. Machinists, quality technicians, and tool-and-die professionals are the primary users of this type of gage.

This plug pin gage is used in manufacturing and quality control settings where hole diameter acceptance or rejection must be confirmed quickly and accurately. Class ZZ gages are the most common working-grade gage used on the shop floor for routine inspection of drilled, bored, reamed, or punched holes. The NoGo designation means this gage is used as the upper-limit check in a Go/NoGo inspection pair, confirming that the hole has not been machined oversized. It is also suited for setting and verifying micrometers, verniers, and other measuring devices requiring a known reference diameter.

Key Features

• Class ZZ Minus tolerance specification for NoGo inspection use
• Nominal diameter of 0.4945 inches with 0.0002-inch tolerance
• 10 microinch surface finish for consistent gage contact
• Steel construction for durability in shop floor environments
• Includes Certificate of Accuracy with NIST traceability
• Suitable for setting micrometers, verniers, and other precision measuring devices

Compatibility

Designed for use in Go/NoGo inspection setups and as a reference standard for micrometers, verniers, and other precision measuring devices requiring a 0.4945-inch diameter reference.

Installation Notes

This gage is a hand-held inspection tool requiring no permanent installation. Handle with clean, dry hands or cotton gloves to prevent corrosion from skin oils. Store in a protective case away from abrasive materials when not in use. Verify the gage is at ambient temperature before use to avoid thermal expansion errors in precision measurement.