Spi 29-986-7 Class Zz Plus Plug Gage 0.986 in

Product Description

The SPI 29-986-7 is a Class ZZ Plus plug gage designed for precise go/no-go dimensional inspection of bored holes and machined openings. Measuring a nominal diameter of 0.986 inches with a tolerance of 0.0002 inches, this steel plug gage provides reliable pass/fail verification in production and quality-control environments. At 0.2 pounds, it is lightweight enough for bench or hand use. Machinists, toolroom technicians, and quality inspectors use plug gages like this to confirm that drilled, reamed, or bored holes fall within specified dimensional limits before parts advance in production.

This plug gage is suited for use in machine shops, manufacturing facilities, and toolrooms where hole size must be verified to tight tolerances. It is appropriate for inspection of parts produced by drilling, reaming, boring, or honing. Class ZZ Plus gages are typically applied to general inspection work where consistent, repeatable measurement of 0.986-inch nominal diameter holes is required across moderate production volumes.

Key Features

• Nominal measurement diameter of 0.986 inches for direct go/no-go hole inspection
• Class ZZ Plus tolerance of 0.0002 inches for repeatable dimensional verification
• Steel construction for durability and wear resistance in production environments
• Lightweight at 0.2 pounds for comfortable extended bench use
• Single-piece package quantity supports individual tool procurement

Compatibility

Designed as a Class ZZ Plus plug gage for go/no-go inspection of nominal 0.986-inch diameter holes in machined or fabricated components.

Installation Notes

Plug gages are handled and used by machinists and quality-control inspectors and require no power source or mounting. Store the gage in its case when not in use to prevent damage to the precision ground surface. Clean and lightly oil the gage before and after use to prevent corrosion and maintain accuracy. Verify calibration status before use in critical inspection applications per your facility quality plan.