Spi 29-767-1 Class Zz Plus Plug Gage 0.767 in Dia

Product Description

The SPI 29-767-1 is a Class ZZ Plus plug gage machined from steel and used to verify the diameter of bored or reamed holes to a nominal size of 0.767 inches. With a tolerance of 0.0002 inches, this gage provides the dimensional verification required in precision machining, quality control, and production inspection environments. Class ZZ Plus gages are manufactured to tighter tolerances than standard Class ZZ, making them suitable for applications where accurate go/no-go decisions are critical. Machinists, tool and die makers, and quality technicians use these gages during in-process and final inspection of machined components.

This plug gage is suited for use in machine shops, manufacturing facilities, and maintenance environments where hole diameter verification is part of standard inspection procedures. It is used on drilled, bored, or reamed holes in ferrous and non-ferrous workpieces. The 0.767-inch nominal diameter makes it a working gage for production-floor inspection of holes in that specific size range. Single-piece packaging makes it easy to add to an existing gage set or replace a worn gage in a production line.

Key Features

• Class ZZ Plus tolerance class provides tighter dimensional accuracy than standard Class ZZ gages
• 0.767-inch nominal measurement diameter for precise hole inspection
• Tolerance of 0.0002 inches ensures reliable go/no-go determination
• Steel construction for durability in production and inspection use
• Lightweight at 0.2 pounds for comfortable single-handed use during inspection

Compatibility

Designed as an OEM-style replacement or direct-use plug gage for any application requiring inspection of a 0.767-inch diameter hole to Class ZZ Plus tolerances.

Installation Notes

Plug gages are handled and used by machinists and quality control technicians and do not require installation in the traditional sense. Clean the gage and the hole to be inspected before use to prevent debris from affecting the reading. Store the gage in a protective case or sleeve when not in use to prevent surface damage that could affect tolerance accuracy. Do not force the gage into a hole, as this can damage both the gage and the workpiece surface.