Spi 19-415-9 Class Zz Minus Plug Pin Gage 0.415 in

Product Description

The SPI 19-415-9 is a Class ZZ minus plug pin gage with a 0.415-inch nominal diameter, manufactured from steel for reliable dimensional inspection work. This gage is used to verify hole sizes by checking that a bore or drilled opening does not exceed the specified minimum dimension. The minus tolerance designation means the gage is ground below nominal, conforming to Class ZZ tolerance standards for go/no-go gauging in production and inspection environments. With a tolerance of 0.0002 inches, this pin gage delivers the accuracy required for quality control checks on machined components. Machinists, toolroom technicians, and quality control inspectors are the primary users.

Class ZZ plug pin gages are suited to general-purpose inspection of holes in machined metal parts, fabricated assemblies, and production components. They are commonly used on shop floors, in inspection rooms, and in toolroom environments where verifying bore diameter is part of a standard quality process. The 0.415-inch size targets holes produced by drilling, reaming, or boring operations at that nominal dimension. This gage is appropriate for both one-off verification tasks and higher-volume inspection routines.

Key Features

• Class ZZ minus tolerance designation for go/no-go hole inspection
• 0.415-inch nominal diameter for direct measurement of matching bores
• 0.0002-inch tolerance for precise dimensional verification
• Steel construction for durability in shop and inspection environments
• Compact, lightweight design at 0.2 pounds for easy single-hand use

Compatibility

Designed as an OEM-style replacement or direct-use Class ZZ plug pin gage suitable for standard go/no-go inspection of 0.415-inch nominal diameter holes in machined or fabricated components.

Installation Notes

Plug pin gages are handled and used by machinists, toolroom technicians, and quality inspectors — no installation in the traditional sense applies. Clean the gage and the bore being checked before use to avoid false readings caused by chips or contamination. Store the gage in a protective case away from other metal tooling to prevent nicks or surface damage that would affect accuracy. Calibration intervals should follow your facility quality management system requirements.