Spi 29-241-7 Class Zz Plus Plug Gage 0.241 in Dia

Product Description

The SPI 29-241-7 is a Class ZZ Plus plug gage used to verify the diameter of drilled, reamed, or bored holes to a nominal size of 0.241 inches. It holds a tolerance of 0.0002 inches, meeting Class ZZ Plus accuracy standards for go/no-go inspection work. Constructed of steel, this gage is suited for shop-floor dimensional inspection in machining, fabrication, and manufacturing environments. Machinists, quality control technicians, and tool-and-die professionals use plug gages like this one to confirm hole conformance during production and incoming inspection. The compact size and single-piece construction make it straightforward to handle and use with standard gage fixtures or by hand.

This plug gage is intended for use in precision hole inspection applications where a 0.241-inch nominal diameter is the target dimension. It fits into quality control workflows for light manufacturing, aerospace component finishing, automotive parts, and general machining shops. The Class ZZ Plus designation indicates it is suitable for checking production tolerances in working-gage applications rather than master or reference gage service. Shops that require documented hole conformance as part of their quality system will find this gage appropriate for routine inspection use.

Key Features

• Nominal measurement diameter of 0.241 inches for precise hole inspection
• Class ZZ Plus tolerance of 0.0002 inches for production-grade accuracy
• Steel construction for durability in shop-floor environments
• Compact single-piece design for easy hand-held or fixture use
• Suitable for go/no-go inspection of drilled, reamed, or bored holes

Compatibility

Designed as an OEM-style working gage for use in any standard plug gage application requiring a 0.241-inch nominal hole diameter inspection at Class ZZ Plus accuracy.

Installation Notes

Plug gages are installed and used by machinists and quality technicians during dimensional inspection procedures. Clean the gage and the hole being measured before use to prevent debris from affecting readings. Store the gage in a protective case away from other metal tooling to avoid surface damage that could compromise tolerance integrity. Do not force the gage into a hole; if resistance is encountered, inspect the hole for burrs or incorrect sizing before proceeding.