Spi 19-133-8 Class Zz Minus Plug Pin Gage 0.133 in

Product Description

The SPI 19-133-8 is a Class ZZ minus plug pin gage used to verify bore diameters and hole tolerances in precision machining and inspection applications. This gage measures a nominal diameter of 0.133 inches and holds a tolerance of 0.0002 inches, making it suitable for go/no-go inspection routines where tight dimensional control is required. Constructed from steel, it provides the hardness and wear resistance expected in a shop-floor measurement tool. Machinists, quality control technicians, and tool and die professionals use Class ZZ gages as a cost-effective standard for production inspection work.

This plug pin gage is used in environments where hole size verification is part of a standard inspection process, including machine shops, manufacturing facilities, and tool rooms. It is appropriate for checking drilled, reamed, or bored holes in metal, plastic, and composite workpieces. Class ZZ gages are the most widely used grade for general-purpose production inspection and are not intended for master or reference gage applications.

Key Features

• Nominal diameter of 0.133 inches for direct bore verification
• Class ZZ tolerance of 0.0002 inches for general production inspection
• Minus gage configuration for go-side or no-go-side inspection setups
• Steel construction for hardness and wear resistance in shop environments
• Single-piece design with no moving parts for reliable, repeatable measurements

Compatibility

Designed as a standard Class ZZ minus plug pin gage for use with conventional pin gage handles and holders sized for small-diameter pins in general production inspection tooling setups.

Installation Notes

Plug pin gages are handled and used by machinists and quality control technicians during part inspection routines. No power source or mechanical installation is required. Gages should be stored clean and dry to prevent corrosion of the steel body, and should be handled with clean gloves or wiped free of skin oils before use to preserve dimensional accuracy. Periodic re-calibration against a traceable standard is recommended per applicable metrology procedures.