Spi 19-396-1 Class Zz Minus Plug Pin Gage 0.396 in

Product Description

The SPI 19-396-1 is a Class ZZ minus plug pin gage with a 0.396-inch nominal diameter, designed for go/no-go inspection of drilled, reamed, and bored holes in production and quality control environments. Manufactured from steel, this gage carries a tolerance of 0.0002 inches, consistent with Class ZZ specifications for general-purpose inspection work. It is a single-end plug gage used to verify that a hole meets its minimum acceptable size. Machinists, quality technicians, and tool room personnel use this gage as part of standard dimensional inspection routines.

This gage is suited for inspection stations, machine shops, and manufacturing floors where quick, reliable hole verification is required. Class ZZ plug gages are commonly applied to medium-tolerance production work where Class Z or ZZ accuracy is specified by engineering drawings or quality plans. The 0.396-inch diameter makes it appropriate for holes produced by standard drill and reamer combinations in that size range.

Key Features

• Class ZZ minus tolerance for general-purpose go/no-go hole inspection
• 0.396-inch nominal diameter for precise fit verification
• Steel construction for durability in production environments
• 0.0002-inch tolerance consistent with Class ZZ gage standards
• Single-piece design for straightforward handheld inspection use

Compatibility

Designed as a general-purpose Class ZZ plug pin gage for use with standard gage handle sets and in dimensional inspection of holes produced to nominal 0.396-inch diameter specifications.

Installation Notes

Plug pin gages require no installation but should be handled and stored according to standard gage care practices. Clean and deburr the hole before gaging to avoid false readings or gage wear. Keep the gage lightly oiled when not in use to prevent corrosion. Calibration and periodic inspection against gage blocks or master rings is recommended per applicable quality system requirements.