Spi 29-360-5 Class Zz Plus Plug Gage 0.36 Inch

Product Description

The SPI 29-360-5 is a Class ZZ Plus plug gage designed for verifying hole diameters to a high degree of precision. It measures a nominal diameter of 0.36 inches with a tolerance of 0.0002 inches, making it suitable for go/no-go inspection work in production and quality-control environments. Constructed from steel, this gage provides the durability needed for repeated use on the shop floor. Machinists, toolmakers, and quality technicians use plug gages like this one to confirm that drilled, reamed, or bored holes meet specified dimensional requirements before parts move to the next stage of production.

This gage is intended for use in precision measurement and inspection applications where tight hole-diameter tolerances must be verified. It is well suited to light manufacturing, job shops, and production lines working with metal or plastic components. The Class ZZ Plus designation indicates a commercial-grade tolerance class appropriate for general inspection of finished parts and incoming material checks. Its compact size and low weight make it easy to handle during high-volume inspection routines.

Key Features

• Nominal measurement diameter of 0.36 inches for precise hole verification
• Tolerance of 0.0002 inches meets Class ZZ Plus requirements
• Steel construction for durability and dimensional stability under repeated use
• Lightweight at 0.2 pounds for easy single-hand operation
• Single-piece packaging with a minimum order quantity of 1 for individual purchase

Compatibility

Designed as an OEM-style replacement or direct-use plug gage for go/no-go inspection setups requiring a 0.36-inch nominal diameter at Class ZZ Plus tolerance.

Installation Notes

Plug gages are used by machinists and quality-control technicians and require no permanent installation. Before use, ensure the gage and workpiece are at the same ambient temperature to avoid measurement error caused by thermal expansion. Clean the gage and the hole being inspected to remove chips, coolant, and debris prior to gauging. Handle with care and store in a protective case when not in use to preserve gage accuracy.