Spi 29-862-0 Class Zz Plus Plug Gage 0.862 in Dia

Product Description

The SPI 29-862-0 is a Class ZZ Plus plug gage designed to verify bore diameters at 0.862 inches with a tolerance of 0.0002 inches. Manufactured from steel, this fixed-limit gage gives machinists, quality technicians, and tool-room professionals a fast, reliable method for go/no-go inspection of cylindrical features. Class ZZ Plus gages are the standard choice for general production inspection work where consistent dimensional verification is required on machined bores, drilled holes, and reamed passages.

This plug gage is suited for use in machine shops, manufacturing facilities, and quality control environments handling precision metalwork. It is appropriate for inspection of parts where bore diameter conformance to 0.862 inches must be confirmed before assembly or shipment. The steel construction makes it durable enough for repetitive use in production-line inspection routines.

Key Features

• 0.862 inch measurement diameter for consistent bore verification
• 0.0002 inch tolerance meets Class ZZ Plus gage accuracy requirements
• Steel construction for durability in production and tool-room environments
• Fixed-limit design enables fast go/no-go inspection workflow
• Compact and lightweight at 0.2 pounds for easy single-hand use

Compatibility

Designed as an OEM-style replacement or direct-use gage for inspection of cylindrical bores at 0.862 inches nominal diameter in general production and quality control applications.

Installation Notes

Handle plug gages with clean, dry hands or lint-free gloves to prevent corrosion from skin oils. Apply a light coat of gage oil before and after use when storing for extended periods. Do not force the gage into a bore; entry and withdrawal should be smooth and free of lateral pressure that could introduce wear or measurement error. Calibration against a known standard is recommended periodically to confirm gage accuracy.