Spi 19-671-7 Class Zz Minus Plug Pin Gage 0.671 in

Product Description

The SPI 19-671-7 is a Class ZZ minus plug pin gage with a 0.671-inch nominal diameter, designed for go/no-go inspection of machined holes and bores. Built from steel, this gage checks that a hole falls within the acceptable size range by confirming passage at the nominal minus tolerance limit. With a tolerance of 0.0002 inches, the 19-671-7 delivers the precision required for production inspection in machine shops, manufacturing facilities, and quality control environments. It is handled by machinists, metrology technicians, and quality inspectors as part of standard dimensional verification workflows.

Class ZZ minus plug gages are used in production and incoming inspection settings where hole diameter conformance must be verified quickly and reliably. This gage is suited for checking drilled, reamed, or bored holes in metal workpieces. It is appropriate for both job-shop and high-volume manufacturing environments where consistent hole tolerances are critical to assembly fit and function.

Key Features

• Class ZZ tolerance grade — designed for general production inspection use
• Minus configuration — checks the lower boundary of acceptable hole size
• 0.671-inch nominal diameter for direct inspection of corresponding bore sizes
• 0.0002-inch tolerance for reliable dimensional verification
• Steel construction for durability in shop environments

Compatibility

Designed as an OEM-style replacement or direct-use plug pin gage suitable for inspection of 0.671-inch nominal diameter holes in standard production and quality control applications.

Installation Notes

Plug pin gages should be handled by qualified metrology technicians or machinists familiar with go/no-go gaging procedures. Clean the gage and the workpiece bore before use to prevent debris from affecting measurement accuracy. Store the gage in a protective case away from sources of heat and corrosion when not in use. Follow your facility's gage calibration schedule to maintain traceability to dimensional standards.