Spi 29-235-9 Class Zz Plus Plug Gage 0.235 in

Product Description

The SPI 29-235-9 is a Class ZZ Plus plug gage designed to verify the dimensional accuracy of machined holes and bores. Built to Class ZZ Plus tolerance standards, it measures a nominal diameter of 0.235 inches with a tolerance of 0.0002 inches, making it suitable for go/no-go inspection work in manufacturing and quality control environments. The gage is constructed from steel for durability and consistent dimensional stability under typical shop conditions. Machinists, quality technicians, and tool and die professionals rely on plug gages like this one to confirm bore dimensions quickly and reliably without requiring complex instrumentation.

This plug gage is used in machine shops, manufacturing facilities, and precision fabrication environments where hole diameter verification is a routine part of the inspection process. It is well suited for incoming inspection, in-process quality checks, and final acceptance testing of drilled, reamed, or bored holes at the 0.235 inch nominal size. The tight 0.0002 inch tolerance classification makes it appropriate for applications requiring accurate dimensional conformance to engineering drawings and specifications.

Key Features

• Class ZZ Plus tolerance rating provides reliable go/no-go inspection capability
• Nominal measurement diameter of 0.235 inches
• Tolerance of 0.0002 inches for precise dimensional verification
• Steel construction for durability and dimensional stability
• Compact and lightweight at 0.2 pounds for easy handling during inspection

Compatibility

Designed as a standard Class ZZ Plus plug gage for go/no-go inspection of machined holes and bores at a nominal diameter of 0.235 inches in general manufacturing and quality control applications.

Installation Notes

Plug gages are handled and used by quality technicians and machinists as inspection tools, not installed components. Store the gage in a clean, dry environment away from corrosive materials to preserve its dimensional accuracy. Handle with care to avoid dropping or contact with abrasive surfaces, as damage to the gage surface will affect measurement reliability. Calibrate and verify the gage periodically against traceable standards in accordance with your facility's quality management procedures.