Spi 19-245-0 Class Zz Minus Plug Pin Gage 0.245 in

Product Description

The SPI 19-245-0 is a Class ZZ minus plug pin gage with a 0.245-inch diameter, used to verify bore and hole dimensions in precision machining and inspection applications. The minus tolerance configuration measures at the low end of the nominal size, making it suitable for go/no-go inspection workflows where tight dimensional control is required. Manufactured from steel, this gage holds a tolerance of 0.0002 inches, meeting Class ZZ standards for general-purpose inspection. Machinists, quality control technicians, and tool-room personnel use plug pin gages like this one to confirm hole acceptance criteria on production and fabricated parts.

This gage is suited for use in machine shops, fabrication facilities, and quality inspection departments. It applies to any application requiring confirmation of a 0.245-inch nominal bore or hole diameter. Class ZZ gages are the standard grade for general inspection work and are commonly used in production environments where rapid, repeatable dimensional checks are needed. The steel construction provides durability across repeated use cycles in typical shop conditions.

Key Features

• Class ZZ minus tolerance configuration for general-purpose hole inspection
• 0.245-inch nominal diameter for direct bore verification
• Steel construction for durability and dimensional stability
• Tolerance of 0.0002 inches for precise go/no-go measurement
• Compact, single-piece design suited for bench and floor inspection use

Compatibility

Designed as a general-purpose Class ZZ minus plug pin gage for verifying 0.245-inch nominal diameter bores and holes across standard machining and inspection applications.

Installation Notes

Plug pin gages are handled and used by machinists and quality control technicians — no installation in a mechanical system is required. Before use, ensure the gage and workpiece are clean and free of chips, coolant, or debris that could affect measurement accuracy. Handle the gage carefully to avoid drops or impacts that could alter its calibration. Store in a protective case when not in use to maintain dimensional integrity.