Vermont Gage 111337350 Class Zz Plus Plug Gage 0.3735in

Product Description

The VERMONT GAGE 111337350 is a Class ZZ Plus plug gage machined from tool steel and designed to verify whether a drilled, reamed, or bored hole meets the lower boundary of a dimensional tolerance. The gage measures a nominal diameter of 0.3735 inches with a tolerance of 0.0002 inches, and its working surfaces carry a 10 microfinish to minimize wear and ensure repeatable contact. Overall length is 2.0 inches, keeping it manageable for bench and floor-level inspection tasks. A Certificate of Accuracy with NIST Traceability ships with every unit, satisfying documentation requirements for calibration records and audit trails. Machinists, quality technicians, and tool-room inspectors are the primary users.

This plug gage is suited for go-type inspection of holes in production machining, toolroom, and quality-control environments. It is compatible with standard gage-block-style verification setups and can be used alongside set micrometers, vernier calipers, and other calibrated measuring devices to confirm or cross-check dimensional accuracy. The Class ZZ Plus designation meets ASME B89.1 standards, making it appropriate for both incoming inspection and in-process verification on small-diameter features in light manufacturing and precision machining shops.

Key Features

• 0.3735-inch nominal diameter with 0.0002-inch tolerance for precise go-type inspection
• 10 microfinish on working surfaces reduces wear and maintains gage accuracy over extended use
• Tool steel construction provides hardness and durability for repeated insertion cycles
• Meets ASME B89.1 standards for dimensional gaging
• Includes Certificate of Accuracy with NIST Traceability for calibration documentation
• 2.0-inch overall length suits benchtop and portable inspection workflows

Compatibility

Designed for go-type inspection applications and compatible for use with set micrometers, verniers, and other calibrated measuring devices as stated by the manufacturer.

Installation Notes

Plug gages are handled and stored by quality technicians and tool-room personnel, not installed in a mechanical system. Keep the gage clean and lightly oiled when not in use to prevent corrosion on the tool steel surfaces. Never force the gage into an undersized hole, as this can damage the gage and invalidate its calibration. Recertify the gage at intervals consistent with your facility quality plan and applicable metrology standards.