Spi 19-295-5 Class Zz Minus Plug Pin Gage 0.2950 in

Product Description

The SPI 19-295-5 is a Class ZZ minus plug pin gage machined from steel, designed for go/no-go dimensional inspection of holes and bores measuring 0.2950 inches in diameter. With a tolerance of 0.0002 inches, this minus-type gage falls below nominal, making it suited for checking minimum acceptable hole size. Plug pin gages are a standard tool in precision metrology and quality control workflows across manufacturing, machining, and mechanical assembly environments. Licensed machinists, QC technicians, and toolroom professionals use this type of gage for fast, repeatable in-process and final inspection checks.

This gage is appropriate for use in any shop or inspection environment that requires verification of hole diameters to tight tolerances. Common applications include checking drilled, reamed, or punched holes in metal fabrication, aerospace component inspection, and general manufacturing QC. The 0.2950-inch nominal diameter makes it a direct fit for inspection tasks where this bore size is a controlled dimension. It is a single-unit tool suited for both bench inspection and floor-level production checks.

Key Features

• Class ZZ tolerance grade for general-purpose inspection applications
• Minus designation: gage dimension falls below nominal for minimum hole-size verification
• 0.2950-inch nominal diameter with 0.0002-inch tolerance
• Steel construction for durability and dimensional stability
• Single-piece design for straightforward handling and use

Compatibility

Designed as an OEM-style replacement or standard inspection tool for use in any go/no-go gage set or standalone hole inspection application requiring a 0.2950-inch Class ZZ minus plug pin gage.

Installation Notes

Plug pin gages are handled and used by QC technicians and precision machinists and do not require installation in the traditional sense. Before use, clean the gage and the hole being checked to remove chips, coolant, or debris that could affect measurement accuracy. Store the gage in a protective case away from other tooling to prevent nicks or wear that could affect tolerance. Follow your facility calibration schedule and applicable ASME B89 or equivalent metrology standards for gage handling and certification intervals.