Spi 19-207-0 Class Zz Minus Plug Pin Gage 0.207 in

Product Description

The SPI 19-207-0 is a Class ZZ minus plug pin gage designed to verify hole diameters and bore sizes with precision. At 0.207 inches in diameter, this gage is used as a go/no-go reference tool to confirm that a drilled, reamed, or machined hole falls within the required tolerance range. The minus designation indicates the gage is ground to the lower boundary of the tolerance band. Built from steel, it delivers the rigidity and wear resistance needed for repeated use in quality control and inspection applications. Tolerance is held to 0.000200 inches, making it suitable for general-purpose dimensional verification in accordance with Class ZZ standards.

This pin gage is used in machine shops, manufacturing facilities, and maintenance environments where hole diameter verification is part of standard inspection workflow. It is appropriate for checking bores in metal, plastic, and composite workpieces. Typical users include machinists, quality control inspectors, and maintenance technicians performing dimensional checks on fabricated or purchased components. The 0.207-inch size fits within the common fractional and letter drill series range, covering a broad range of production and repair applications.

Key Features

• Class ZZ minus designation for lower-boundary tolerance verification
• 0.207-inch nominal diameter for precise hole and bore gauging
• Tolerance held to 0.000200 inches for reliable dimensional confirmation
• Steel construction for durability and dimensional stability
• Compact, single-pin format suited for bench inspection and field use

Compatibility

Designed as a standard Class ZZ minus plug gage for use in go/no-go inspection setups wherever a 0.207-inch bore diameter must be verified.

Installation Notes

Pin gages are handled and used by machinists and quality control inspectors, not installed in a fixed system. Store the gage in a protective case or sleeve when not in use to prevent nicking the ground surface. Clean the gage and the bore being measured before use to avoid false readings. Do not force the gage into an undersized hole, as this can damage the ground diameter and compromise accuracy.