Spi 29-267-2 Class Zz Plus Plug Gage 0.267 in

Product Description

The SPI 29-267-2 is a Class ZZ Plus plug gage used to verify that a hole or bore meets a specified minimum diameter. Machined from steel, this gage checks a nominal diameter of 0.267 inches with a tolerance of 0.0002 inches, making it suited for go/no-go inspection work where consistent, repeatable measurement is required. It is a single-ended gage intended for use in machine shops, manufacturing lines, and quality control environments. Machinists, toolroom technicians, and QC inspectors use plug gages of this class to validate drilled, reamed, or bored holes against print tolerances before parts advance in production.

Class ZZ Plus plug gages are commonly applied in general-purpose inspection of production parts where tolerance requirements are moderate. This gage is appropriate for checking holes in metal, plastic, or composite workpieces across a wide range of industries including automotive, aerospace, and general manufacturing. It is a direct-use precision tool requiring no calibration equipment at the point of inspection, though periodic recertification against a traceable standard is standard shop practice.

Key Features

• 0.267-inch nominal diameter for precise bore verification
• 0.0002-inch tolerance meets Class ZZ Plus accuracy requirements
• Steel construction for wear resistance and dimensional stability
• Single-unit packaging suitable for individual toolroom or inspection use
• Direct go/no-go inspection without additional instrumentation

Compatibility

Designed as an OEM-style replacement or direct-use plug gage for any application requiring inspection of a 0.267-inch nominal bore to Class ZZ Plus standards.

Installation Notes

Plug gages require no installation but should be handled and stored according to standard gage care practices. Keep the gage clean and lightly oiled when not in use to prevent corrosion on the steel surface. Do not force the gage into a hole; if resistance is encountered, the bore is undersize and should be reworked before re-inspection. Periodic recertification against a traceable master is recommended to maintain measurement integrity over time.