Spi 19-076-9 Class Zz Minus Plug Pin Gage 0.076 in

Product Description

The SPI 19-076-9 is a Class ZZ minus plug pin gage used to verify bore and hole diameters in precision machining and inspection workflows. Designed for go/no-go gauging applications, this pin gage measures 0.076 inches in diameter and is manufactured from steel for consistent dimensional stability. The minus tolerance designation means the gage is ground to the lower boundary of the tolerance band, making it suitable for checking minimum acceptable hole size. Machinists, quality control technicians, and tooling professionals use this type of gage in production and inspection environments where tight dimensional control is required.

Class ZZ pin gages are general-purpose gauges commonly used in machine shops, manufacturing facilities, and inspection departments. This 0.076-inch diameter gage is appropriate for verifying small-bore features in metal, plastic, and composite components. It fits into standard pin gage handle sets and is used wherever a reliable, repeatable method of hole verification is needed in light-production or inspection-line settings.

Key Features

• Class ZZ tolerance class for general-purpose go/no-go gauging
• Minus designation ground to the lower tolerance boundary for minimum hole verification
• 0.076-inch nominal diameter for small-bore inspection
• Steel construction for dimensional stability and wear resistance
• Tolerance of 0.000200 inches for reliable, repeatable measurement
• Compatible with standard pin gage handle sets

Compatibility

Designed as a general-purpose replacement or addition to Class ZZ pin gage sets used in standard machining and inspection applications. Compatible with common pin gage handles that accept 0.076-inch diameter pins.

Installation Notes

Pin gages should be handled with clean, dry hands or lint-free gloves to prevent corrosion from skin oils. Insert the pin gage into the bore being inspected with light, axial pressure only — do not force the pin or rotate it under load, as this can damage the gage or the part. Store pin gages in a protective case away from other metal tools to prevent nicking the precision-ground surface. Periodic cleaning and light oiling with instrument oil will maintain accuracy and extend service life.