Spi 19-498-5 Class Zz Minus Plug Pin Gage 0.498 in

Product Description

The SPI 19-498-5 is a Class ZZ minus plug pin gage used to verify bore and hole dimensions in precision machining and inspection workflows. It checks whether a hole falls within the specified tolerance range by confirming the go or no-go condition for a 0.498-inch diameter opening. The minus designation means the gage is manufactured to the lower side of the nominal diameter, following standard gage-maker tolerance conventions. With a tolerance of 0.0002 inches, this gage meets Class ZZ specifications for general-purpose inspection. The steel construction provides durability for repeated use on the shop floor or in a quality control environment. Machinists, toolmakers, and quality technicians are the primary users.

This gage is suited for production inspection and incoming quality control where 0.498-inch diameter bores must be verified. It is commonly used in machine shops, manufacturing facilities, and maintenance environments that require dimensional verification of drilled, reamed, or bored holes. The compact, single-piece pin format makes it easy to handle and store. It applies wherever a Go-type or No-Go-type check is needed at this specific diameter under Class ZZ tolerance standards.

Key Features

• Class ZZ tolerance class for general-purpose hole inspection
• Minus designation indicates gage is sized to the low side of the nominal diameter
• 0.0002-inch tolerance for reliable dimensional verification
• Steel construction for shop-floor durability and repeated use
• 0.498-inch nominal diameter for precise bore checking at that size

Compatibility

Designed as a standard Class ZZ minus plug pin gage for use in any inspection or machining application requiring dimensional verification of 0.498-inch diameter bores.

Installation Notes

Plug pin gages are handled and used by machinists, toolmakers, and quality control technicians. Before use, clean both the gage and the bore to remove chips, coolant, or debris that could affect the reading. Handle the gage carefully to avoid drops or impacts that could alter its calibration. Gages should be periodically inspected and recalibrated according to your facility quality management procedures to maintain measurement traceability.