Spi 19-930-7 Class Zz Minus Plug Pin Gage 0.93 in

Product Description

The SPI 19-930-7 is a Class ZZ minus plug pin gage manufactured from steel, designed to verify that a hole or bore meets minimum dimensional tolerances. The gage measures 0.93 inches in diameter and holds a tolerance of 0.0002 inches, making it suitable for go/no-go inspection work in production and quality-control environments. Machinists, toolmakers, and quality technicians use plug gages like this one to confirm bore sizes quickly and consistently without the need for a measuring instrument at the point of inspection.

This pin gage is used in machine shops, manufacturing facilities, and inspection departments where precise bore verification is required. The Class ZZ designation indicates a commercial-grade tolerance class appropriate for general inspection of workpieces where close-tolerance measurement equipment is needed. The minus designation means the gage is ground to the lower end of the tolerance band, confirming that a bore is at or above the minimum acceptable size.

Key Features

• Class ZZ minus tolerance class for commercial-grade go/no-go bore inspection
• 0.93 inch diameter for direct bore size verification
• 0.0002 inch tolerance for consistent, repeatable measurement results
• Steel construction for durability under regular shop-floor use
• Compact form factor supports handheld inspection without additional equipment

Compatibility

Designed as an OEM-style replacement or direct-use plug pin gage for quality inspection applications requiring a 0.93 inch nominal bore check at the Class ZZ minus tolerance standard.

Installation Notes

Plug pin gages are handled and used by machinists, toolmakers, and quality control technicians. Store the gage in a protective case when not in use to prevent surface damage that could affect measurement accuracy. Clean bore surfaces and the gage body before use to eliminate debris that could cause false readings. Do not force the gage into a bore; if resistance is felt, the bore may be undersized and should be evaluated accordingly.