Spi 29-964-4 Class Zz Plus Plug Gage 0.964 in Dia

Product Description

The SPI 29-964-4 is a Class ZZ Plus plug gage designed for go/no-go dimensional inspection of bores and holes measuring 0.964 inches in diameter. Built from steel, this gage delivers a tolerance of 0.0002 inches, meeting the requirements of Class ZZ Plus precision standards. It is used by machinists, quality control technicians, and tool-room professionals to verify that machined holes fall within specified dimensional limits. The compact form factor and defined tolerance class make it a reliable reference tool for production floor inspection and incoming quality checks.

This plug gage is suited for use in machine shops, manufacturing facilities, and metrology labs where bore verification is part of the standard quality workflow. It applies wherever a 0.964-inch nominal bore diameter must be confirmed to tight tolerance, including applications in general metalworking, tooling, and precision component fabrication. The package quantity is one gage per unit.

Key Features

• Class ZZ Plus tolerance classification for precision bore inspection
• 0.964-inch measurement diameter for direct go/no-go verification
• Tolerance of 0.0002 inches (0.0051 mm) for tight dimensional control
• Steel construction for durability and dimensional stability
• Single-piece package for individual replacement or supplemental tooling

Compatibility

Designed as an OEM-style replacement or supplemental gage for quality inspection setups requiring a Class ZZ Plus plug gage at 0.964 inches nominal diameter.

Installation Notes

Plug gages are handled and used by metrology technicians and machinists; no power source or mechanical installation is required. Clean the gage and the bore to be checked before use to prevent contamination errors. Store the gage in its protective case when not in use to preserve calibration and surface condition. Handle with clean, dry hands or cotton gloves to prevent corrosion from skin oils.