Spi 29-933-9 Class Zz Plus Plug Gage 0.933 in Dia

Product Description

The SPI 29-933-9 is a Class ZZ Plus plug gage designed to verify bore and hole diameters to a nominal size of 0.933 inches with a tolerance of 0.0002 inches. Class ZZ Plus gages meet tighter-than-standard tolerance requirements, making them suitable for inspection work where dimensional accuracy is critical. Machined from steel, this go/no-go style gage provides a reliable, repeatable method for checking inside diameters on the shop floor or in the inspection room. Metrology technicians, machinists, and quality control personnel use plug gages as a fast, direct measurement tool that requires no readout equipment.

This plug gage is used in production and inspection environments where bore diameter conformance must be verified against a fixed specification. It is appropriate for general metalworking, machining, and manufacturing applications where hole tolerances are held to close limits. The 0.933-inch nominal diameter and 0.0002-inch tolerance make it a practical choice for medium-bore inspection tasks in both job shop and production settings.

Key Features

• Nominal diameter of 0.933 inches for direct bore verification
• Class ZZ Plus tolerance of 0.0002 inches for tight-tolerance inspection work
• Steel construction for durability and dimensional stability
• No readout equipment required — direct contact measurement
• Single-unit packaging suitable for individual bench or floor use

Compatibility

Designed as a standard Class ZZ Plus plug gage for verifying inside diameters in machined components where a 0.933-inch nominal bore diameter is specified.

Installation Notes

Plug gages are handled and used by metrology technicians and machinists following standard gage-use practices. Keep the gage clean and lightly oiled when not in use to prevent corrosion. Do not force the gage into an undersized bore, as this can damage both the gage and the workpiece. Store in a protective case away from temperature extremes to maintain calibration integrity.