Spi 19-107-2 Class Zz Minus Plug Pin Gage 0.107 in

Product Description

The SPI 19-107-2 is a Class ZZ minus plug pin gage designed for verifying bore and hole diameters in precision machining and inspection applications. It measures 0.107 inches in diameter and is manufactured from steel for durability and dimensional stability. The minus tolerance configuration means the gage is ground to the low side of nominal, which is standard practice for go-gage applications where the gage must pass through an acceptable hole. Machinists, quality control technicians, and toolroom professionals use plug pin gages like this one to confirm whether a drilled, reamed, or bored hole meets specified tolerances. The stated tolerance on this gage is 0.0002 inches (0.0051 mm), consistent with Class ZZ specifications for this diameter range.

This gage is suited for use in production inspection, incoming quality control, and toolroom environments where small-diameter hole verification is required. It is appropriate for both shop-floor and bench-top inspection tasks involving holes near 0.107 inches in diameter. Class ZZ is the most common commercial-grade tolerance class for plug gages and is widely used where high-precision master-grade gages are not required. This gage ships individually and is ready to use without additional components.

Key Features

• Class ZZ minus tolerance configuration — ground to the low side of nominal for go-gage use
• 0.0002-inch (0.0051 mm) tolerance for consistent, repeatable inspection results
• Steel construction for wear resistance and long service life
• 0.107-inch nominal diameter targets a common small-bore inspection size
• Compact and lightweight at 0.2 pounds for easy handling at the bench or on the floor

Compatibility

Designed as a standard Class ZZ minus plug pin gage for general-purpose bore inspection of holes with a nominal diameter of 0.107 inches across a range of workpiece materials and industries.

Installation Notes

Plug pin gages require no installation but should be handled and stored carefully to prevent nicks, burrs, or contamination that could affect accuracy. Before use, clean both the gage and the hole being inspected with a lint-free cloth to remove chips, oil, or debris. Always apply light, even hand pressure when inserting the gage — never force it with tools. Periodic recalibration by a qualified metrology lab is recommended to verify dimensional integrity over time.