Spi 19-933-1 Class Zz Minus Plug Pin Gage 0.933 in

Product Description

The SPI 19-933-1 is a Class ZZ minus plug pin gage machined from steel and used to verify bore and hole diameters to a nominal size of 0.933 inches. It is a go/no-go inspection tool that checks whether a drilled, reamed, or machined hole falls within tolerance. The minus designation means the gage is manufactured undersized relative to the nominal dimension, consistent with Class ZZ go-gage convention. Tolerance is held to 0.000200 inches, meeting the precision requirements for general-purpose inspection work in fabrication, machining, and assembly environments. Machinists, quality technicians, and toolroom personnel use this gage as part of in-process and final inspection routines.

This plug gage is suited for production floor and quality lab use where hole size verification is required at a 0.933-inch nominal diameter. It is appropriate for checking through-holes and blind bores in metal, plastic, or composite workpieces. Class ZZ gages are the standard tolerance class for general industrial inspection and are widely used in job shops, manufacturing plants, and maintenance facilities where close-tolerance hole verification is part of the production process.

Key Features

• Nominal diameter of 0.933 inches for direct-size hole verification
• Class ZZ minus designation for go-gage inspection per standard tolerance conventions
• Tolerance of 0.000200 inches for reliable general-purpose inspection accuracy
• Steel construction for durability and resistance to wear during repeated use
• Single-piece package quantity suitable for individual technician or toolroom use

Compatibility

Designed as an OEM-style replacement or direct-use plug gage for any application requiring hole verification at a nominal diameter of 0.933 inches in a Class ZZ minus configuration.

Installation Notes

Plug pin gages are handled and used by quality technicians and machinists and require no permanent installation. Before use, clean the gage and bore surfaces to remove chips, coolant, and debris that could affect measurement accuracy. Store the gage in its case when not in use to prevent corrosion and surface damage. Do not force the gage into an undersized hole, as this can damage the gage surface and compromise future measurement validity.