Spi 29-483-5 Class Zz Plus Plug Gage 0.483 in

Product Description

The SPI 29-483-5 is a Class ZZ Plus plug gage used to verify the inside diameter of machined holes and bores to a nominal size of 0.483 inches. Built from steel, this go/no-go style precision instrument holds a tolerance of 0.0002 inches, making it suited for quality control inspection in machine shops, manufacturing facilities, and production environments. Machinists, quality control technicians, and toolroom professionals use plug gages like the 29-483-5 to confirm bore conformance without relying on variable measuring instruments. The Class ZZ designation reflects a defined tolerance grade for plug gages used in general inspection work.

This plug gage is intended for inspecting drilled, reamed, or bored holes where dimensional accuracy must be confirmed before parts move to the next stage of production. It is well suited for use in metal fabrication, job shops, and precision manufacturing settings. The 0.483-inch nominal diameter fits a specific range of hole sizes commonly encountered in mechanical component production. It is a hand-held, non-powered instrument requiring no calibration equipment at the point of use beyond standard gage block verification practices.

Key Features

• Nominal measurement diameter of 0.483 inches for precise bore verification
• Tolerance of 0.0002 inches meets Class ZZ Plus inspection requirements
• Steel construction provides durability and dimensional stability during repeated use
• Lightweight at 0.2 pounds for comfortable hand use during inspection tasks
• Single-piece package quantity supports individual replacement or kit supplementation

Compatibility

Designed as a standard Class ZZ Plus plug gage for general inspection use in applications requiring bore verification at a nominal diameter of 0.483 inches.

Installation Notes

Plug gages are used by quality control and machining personnel and require no installation in the traditional sense. Before use, clean the gage and the bore being checked to remove chips, coolant, or debris that could affect the reading. Store the gage in a protective case away from other tools to prevent surface damage. Periodically verify the gage against a calibrated master to confirm it remains within tolerance.