Spi 19-829-1 Class Zz Minus Plug Pin Gage 0.829 in

Product Description

The SPI 19-829-1 is a Class ZZ minus plug pin gage machined from steel, used to verify the dimensional accuracy of bored holes, drilled passages, and precision-fit openings. The gage measures 0.829 inches in diameter with a minus tolerance of 0.0002 inches, placing it within the Class ZZ specification for go/no-go inspection work. Machinists, tool-and-die technicians, and quality-control inspectors use pin gages like this one to confirm that a hole falls within acceptable size limits before assembly or finishing operations proceed.

Class ZZ plug pin gages are standard tools in production inspection environments, machine shops, and maintenance facilities where hole size verification is part of the quality process. The 0.829-inch diameter makes this gage suitable for checking corresponding bore sizes in metal components, fixtures, and machined housings. Individual pin gages of this type are commonly used as part of a complete set or as a standalone replacement for a specific diameter that sees frequent use.

Key Features

• Class ZZ minus tolerance specification for go/no-go hole inspection
• 0.829-inch diameter for precise bore verification at that nominal size
• 0.0002-inch minus tolerance for tight dimensional control
• Steel construction for durability in shop environments
• Single-piece unit sold individually, suitable as a standalone gage or set replacement

Compatibility

Designed as an individual Class ZZ minus plug pin gage for use in standard pin gage handles and holders that accept 0.829-inch diameter pins in general-purpose inspection applications.

Installation Notes

Pin gages should be handled with clean, dry hands or lint-free gloves to prevent corrosion from skin contact. Before use, clean the gage and the bore being inspected to remove chips, coolant, or debris that could cause a false reading. Do not force a plug gage into an undersized hole; doing so can damage the gage and produce inaccurate measurements. Store individually or in a designated gage block tray to prevent contact damage to the ground surface.