Spi 19-445-6 Class Zz Minus Plug Pin Gage 0.445 in

Product Description

The SPI 19-445-6 is a Class ZZ minus plug pin gage used to verify hole diameters and internal bore dimensions to a high degree of dimensional accuracy. The gage measures 0.445 inches in diameter and holds a tolerance of 0.0002 inches, placing it firmly in the Class ZZ specification tier suited for inspection and quality-control work. Constructed from steel, the 19-445-6 is a go/no-go style dimensional reference tool used by machinists, toolroom technicians, and quality inspectors to confirm that drilled, reamed, or bored holes meet print specifications.

This pin gage is appropriate for use in machine shops, toolrooms, manufacturing cells, and inspection departments where hole size verification is part of a standard quality process. The minus designation means the gage is manufactured to the lower end of the tolerance band, making it suitable for use as a go gage in applications where the hole must be at least 0.445 inches in diameter. It is well suited for both production floor checks and bench inspection tasks in metalworking and precision manufacturing environments.

Key Features

• Class ZZ tolerance class with minus designation for go-gage applications
• 0.445 inch nominal diameter for direct hole size verification
• 0.0002 inch tolerance for precise dimensional control
• Steel construction for durability and dimensional stability
• Single-piece design suitable for individual hole inspection

Compatibility

Designed as a standard Class ZZ minus plug pin gage for use in hole inspection applications requiring a 0.445 inch nominal diameter reference.

Installation Notes

Pin gages are handled and used by machinists, quality technicians, and inspection personnel. Clean the gage and the bore being checked before use to remove chips, oil, and debris that could affect the reading. Store the gage in a protective case away from other metal tools to prevent surface damage. Avoid dropping or forcing the gage, as impact or side loading can alter its dimensional accuracy.