Spi 19-147-8 Class Zz Minus Plug Pin Gage 0.147 in

Product Description

The SPI 19-147-8 is a Class ZZ minus plug pin gage machined from steel, used to verify hole diameters through a go/no-go inspection process. It is manufactured to a minus tolerance of 0.000200 inches, placing it within the Class ZZ specification for inspection-grade gaging tools. At 0.147 inches in diameter, this gage is suited for checking small-bore features on machined parts, castings, and fabricated components. Machinists, quality control technicians, and tool-room professionals rely on Class ZZ plug gages to confirm dimensional conformance on production and inspection lines.

This gage is appropriate for use in manufacturing environments, machine shops, and quality labs where hole diameter verification is required. The 0.147-inch size targets small precision bores common in mechanical assemblies. Minus-tolerance plug gages are used when the gage must fall below the nominal dimension to meet specific inspection protocol requirements. It is a single-piece unit packaged individually for bench or kit use.

Key Features

• Class ZZ minus tolerance classification for inspection-grade dimensional verification
• 0.000200-inch tolerance for precise small-bore measurement
• Steel construction for durability and dimensional stability
• 0.147-inch nominal diameter targets small precision bore applications
• Single-piece packaging suitable for individual bench or toolbox use

Compatibility

Designed as a Class ZZ minus plug pin gage for use in standard go/no-go inspection applications involving 0.147-inch nominal diameter bores.

Installation Notes

Plug pin gages are handled and used by machinists and quality control technicians, not installed in a system. Store the gage in a protective case away from moisture and debris to preserve dimensional accuracy. Clean the gage and the bore being inspected before use to prevent false readings. Do not force the gage into a bore, as this can damage the gage or the workpiece and produce invalid results.