Spi 29-102-1 Class Zz Plus Plug Gage 0.102 in

Product Description

The SPI 29-102-1 is a Class ZZ Plus plug gage designed for precision dimensional inspection of bored holes, drilled passages, and machined openings with a nominal diameter of 0.102 inches. Class ZZ Plus gages hold a tolerance of 0.0002 inches, making them suitable for go/no-go verification on close-tolerance work where consistent bore acceptance criteria are required. The gage is constructed from steel for durability and dimensional stability under repeated use. Machinists, quality technicians, and tool-room personnel use this type of gage as part of incoming inspection, in-process checks, and final part acceptance routines.

This plug gage is intended for use in precision manufacturing, machine shop, and inspection environments where small-diameter bore verification is a routine requirement. It is well-suited for checking holes in metal components produced by drilling, reaming, or boring operations. The 0.102-inch diameter falls in the small-bore range, making it applicable to fine mechanical assemblies, instrument components, and close-tolerance fixtures. One gage is supplied per package.

Key Features

• Class ZZ Plus tolerance rating: 0.0002 inches for reliable go/no-go inspection
• Nominal measurement diameter of 0.102 inches for small-bore applications
• Steel construction for dimensional stability and wear resistance
• Single-piece package quantity for individual replacement or kit supplementation

Compatibility

Designed as an OEM-style inspection gage for use in standard plug gage handles and holders that accept small-diameter gage members in the 0.102-inch range.

Installation Notes

Plug gages should be handled by a qualified inspector or machinist familiar with go/no-go gage practice. Clean the bore and gage member before use to prevent contamination from affecting measurement accuracy. Do not force the gage through a hole; excessive insertion force can damage both the gage and the workpiece. Store the gage in a protective case away from other tooling to prevent nicking or surface damage that could affect tolerance integrity.