Spi 19-534-7 Class Zz Minus Plug Pin Gage 0.534 in

Product Description

The SPI 19-534-7 is a Class ZZ minus plug pin gage with a nominal diameter of 0.534 inches and a tolerance of 0.0002 inches. Manufactured from steel, it is used to verify that a hole or bore meets minimum acceptable size requirements. Class ZZ is the standard tolerance class for go/no-go inspection of production parts where high-precision master-grade gages are not required. Machinists, quality control inspectors, and tool room technicians use plug pin gages as part of routine dimensional verification on machined components.

This gage is suited for use in machine shops, production environments, and inspection departments working with bores nominally sized at 0.534 inches. A minus-tolerance gage checks the low limit of a hole, confirming the bore has not been cut undersize. It is appropriate for applications involving drilled, reamed, or bored holes in metal, plastic, or composite workpieces where dimensional conformance is required.

Key Features

• Class ZZ tolerance class for general-purpose production inspection
• Minus designation checks the low-limit condition of the bore
• 0.534 inches nominal diameter with 0.0002 inches tolerance
• Steel construction for durability and wear resistance in shop environments
• Single-piece design for straightforward go/no-go inspection workflow

Compatibility

Designed as an OEM-style replacement or direct-use gage for go/no-go inspection setups requiring a Class ZZ minus plug gage at the 0.534 inches nominal diameter range.

Installation Notes

Plug pin gages are handled and used by quality control inspectors or machinists and require no installation in the traditional sense. Store gages in a protective case and keep them clean and lightly oiled to prevent corrosion. Do not force the gage into a bore; apply only light hand pressure to avoid wear or damage to the gage surface. Periodic recalibration against NIST-traceable standards is recommended to maintain measurement integrity.