Spi 19-710-3 Class Zz Minus Plug Pin Gage 0.71 in

Product Description

The SPI 19-710-3 is a Class ZZ minus plug pin gage used to verify bore and hole dimensions in precision machining and inspection work. Built to Class ZZ tolerance standards, this pin gage checks a 0.71 inch nominal diameter with a minus tolerance of 0.0002 inches, confirming that a hole or bore does not exceed the specified limit. The steel construction provides the hardness and wear resistance required for repeated use in shop-floor and inspection-room environments. Machinists, tool-and-die workers, and quality control technicians use this type of gage as part of go/no-go inspection routines.

This pin gage is suited for dimensional inspection of machined holes, drilled bores, and precision-fit features where tight tolerances must be verified. It is used across general manufacturing, metalworking, and precision fabrication shops. The 0.71 inch diameter makes it appropriate for mid-range bore inspection tasks where Class ZZ tolerances are specified by engineering or quality standards.

Key Features

• Class ZZ tolerance rating for go/no-go dimensional inspection
• Minus plug design confirms upper limit of hole size
• 0.0002 inch tolerance for reliable precision checking
• Steel construction for durability and wear resistance in production environments
• Compact and lightweight at 0.2 pounds for easy single-hand use

Compatibility

Designed as an OEM-style Class ZZ plug pin gage for use in standard bore inspection applications requiring a 0.71 inch diameter check with minus tolerance.

Installation Notes

Pin gages do not require installation but should be handled and stored carefully to prevent damage to the gauging surface. Always clean the bore and the gage surface before use to avoid false readings caused by debris or burrs. Store in a protective case away from impact hazards to maintain calibration integrity. Periodic recertification against traceable standards is recommended for gages used in formal quality control programs.