Spi 19-167-6 Class Zz Minus Plug Pin Gage 0.167 in

Product Description

The SPI 19-167-6 is a Class ZZ minus plug pin gage machined from steel, used to verify bore diameters and hole tolerances in precision machining and inspection work. With a nominal diameter of 0.167 inches and a tolerance of 0.0002 inches, this gage is designed for go/no-go inspection of holes where dimensional accuracy is critical. Class ZZ is the standard tolerance class for general-purpose inspection in production environments. The minus designation means the gage is ground to the low end of the tolerance band, making it suitable for checking minimum material condition. It is used by machinists, quality control technicians, and toolroom professionals.

This plug pin gage is applied in production floor inspection, toolroom verification, and quality assurance workflows. It is suited for checking drilled, reamed, or bored holes in metal components where a 0.167-inch nominal diameter is specified. The gage is handled by machinists and QC personnel working to tight dimensional tolerances in manufacturing environments. It is commonly used with gage blocks or stored in a dedicated gage set to preserve calibration integrity.

Key Features

• Class ZZ tolerance class for general-purpose production inspection
• Minus designation for low-end tolerance band verification
• 0.167-inch nominal diameter with 0.0002-inch tolerance
• Steel construction for durability in production environments
• Single-piece design for straightforward go/no-go bore checking

Compatibility

Designed as a standard Class ZZ minus plug pin gage for general-purpose inspection of 0.167-inch nominal diameter bores in production and toolroom applications.

Installation Notes

Plug pin gages are used by machinists and quality control technicians and require no permanent installation. Handle the gage with clean, dry hands or lint-free gloves to prevent corrosion and contamination that could affect measurement accuracy. Store the gage in a protective case away from other tooling when not in use. Calibration should be verified periodically against a traceable standard in accordance with your facility's gage control program.