Spi 19-184-1 Class Zz Minus Plug Pin Gage 0.184 in

Product Description

The SPI 19-184-1 is a Class ZZ minus plug pin gage machined from steel, designed for go/no-go dimensional inspection of holes and bores with a nominal diameter of 0.184 inches. Class ZZ is the standard tolerance grade for plug gages used in general manufacturing inspection, and the minus designation means the gage is ground to the low side of the nominal diameter. With a tolerance of 0.0002 inches, this gage provides reliable, repeatable measurement for quality control applications. It is a core hand tool for machinists, toolroom technicians, and quality inspection personnel working to tight dimensional standards.

This pin gage is suited for use in production floor inspection, incoming material verification, and toolroom quality checks across general manufacturing, precision machining, and metalworking environments. The 0.184-inch diameter makes it appropriate for inspecting drilled, reamed, or bored holes where consistent fit verification is required. It is a single-piece gage used individually or as part of a broader set in standard inspection protocols.

Key Features

• Class ZZ tolerance grade for general-purpose plug gage inspection applications
• Minus designation ground to the low side of nominal for accurate go/no-go evaluation
• Nominal diameter of 0.184 inches with a tolerance of 0.0002 inches
• Steel construction for durability and dimensional stability under regular use
• Compact single-piece design suitable for individual use or integration into a gage set

Compatibility

Designed as a standard Class ZZ minus plug pin gage for use in general manufacturing inspection of holes and bores at 0.184-inch nominal diameter.

Installation Notes

Plug pin gages are handled and used by quality technicians and machinists and require no permanent installation. Store the gage in a protective case away from moisture and contaminants to preserve dimensional accuracy. Handle with clean, dry hands or lint-free gloves to prevent corrosion and thermal expansion effects from body heat. Calibration and periodic recertification should follow applicable metrology standards and internal quality control procedures.