Spi 19-266-6 Class Zz Minus Plug Pin Gage 0.266 in

Product Description

The SPI 19-266-6 is a Class ZZ minus plug pin gage used to verify bore diameters and hole sizes in precision machining and inspection applications. It measures 0.266 inches in diameter and is manufactured from steel for durability and dimensional stability. The minus tolerance designation means the gage is ground to the low side of nominal, making it appropriate for go/no-go inspection routines where controlled undersize verification is required. Machinists, quality control technicians, and toolroom personnel use this type of gage to confirm that drilled, reamed, or bored holes fall within acceptable tolerance ranges.

Class ZZ plug gages are the standard working gage class for general shop-floor inspection. This gage is suited for use in metalworking, fabrication, and manufacturing environments where consistent hole verification is part of a quality process. It is a single-ended pin style used in hand inspection of workpieces. The 0.0002-inch tolerance (0.0002 mm) is consistent with Class ZZ specifications and makes it appropriate for production inspection rather than master or reference gage applications.

Key Features

• Class ZZ minus tolerance designation for go/no-go bore inspection
• 0.266-inch nominal diameter for precise hole verification
• Steel construction provides wear resistance and dimensional stability
• 0.0002-inch tolerance meets Class ZZ working gage standards
• Single-piece pin gage format for straightforward hand inspection use

Compatibility

Designed as a working plug pin gage for general shop-floor bore inspection of holes with a nominal diameter of 0.266 inches in metalworking and manufacturing applications.

Installation Notes

Plug pin gages are used by quality control technicians and machinists and require no installation tools. Before use, clean both the gage and the workpiece bore to remove chips, coolant, and debris that could affect measurement accuracy. Store the gage in its protective case when not in use to prevent damage to the ground surface. Do not force the gage into an undersized hole, as this can damage the gage surface and produce inaccurate readings.