Spi 29-365-4 Class Zz Plus Plug Gage 0.365 in

Product Description

The SPI 29-365-4 is a Class ZZ Plus plug gage used to verify the inside diameter of machined holes to a nominal size of 0.365 inches. It holds a tolerance of 0.0002 inches, meeting the dimensional accuracy requirements for Class ZZ Go/No-Go inspection work. Constructed from steel, it is built to withstand repeated use in production and quality-control environments. Machinists, toolroom technicians, and quality inspectors use this type of gage to confirm hole conformance during or after machining operations.

This plug gage is suited for inspection of drilled, reamed, or bored holes in manufacturing and fabrication settings. It is appropriate for both job-shop and production-floor use where consistent hole verification at the 0.365-inch nominal diameter is required. The compact size and light weight make it easy to handle during high-volume inspection tasks.

Key Features

• Nominal measurement diameter of 0.365 inches for precise hole inspection
• Tolerance of 0.0002 inches meets Class ZZ Plus accuracy requirements
• Steel construction provides durability under repeated inspection use
• Compact and lightweight at 0.2 pounds for easy bench or floor use

Compatibility

Designed as an OEM-style replacement or standard inspection tool for use in applications requiring Class ZZ plug gage verification at a 0.365-inch nominal hole diameter.

Installation Notes

Plug gages are handled and used by machinists and quality-control technicians and do not require electrical isolation or fluid shutoff before use. Store the gage in a protective case or sleeve when not in use to prevent surface damage to the gage surface. Do not force the gage into an undersized hole, as this can damage the gage or the workpiece and produce inaccurate readings. Follow applicable metrology lab or shop-floor calibration procedures to maintain traceability.