Spi 19-672-5 Class Zz Minus Plug Pin Gage 0.672 in

Product Description

The SPI 19-672-5 is a Class ZZ minus plug pin gage used to verify bore and hole dimensions in precision machining and inspection work. The gage measures 0.672 inches in diameter and holds a minus tolerance of 0.0002 inches, making it suitable for go/no-go inspection routines where tight dimensional control is required. Constructed from steel, this pin gage is built to withstand repeated use in shop-floor and quality-control environments. Machinists, toolmakers, and quality technicians use plug gages like this one to confirm that drilled, reamed, or bored holes fall within specified limits before parts move to the next stage of production.

Class ZZ plug gages are the standard choice for general inspection of production parts where moderate precision is needed. This pin gage is appropriate for use in manufacturing facilities, machine shops, and inspection departments handling medium-tolerance work. It fits into standard gage handle holders sized for the 0.672-inch diameter range, allowing integration into an existing gage set without additional tooling. The steel construction holds up well in environments where gages are handled frequently and stored in gage blocks or roll cases.

Key Features

• Class ZZ minus tolerance classification for general production inspection
• 0.672-inch nominal diameter for direct bore and hole verification
• Minus tolerance of 0.0002 inches ensures the gage stays within the low side of the tolerance band
• Steel construction provides durability and dimensional stability under repeated use
• Compatible with standard plug gage handles for the applicable diameter range

Compatibility

Designed as an OEM-style replacement or direct-use plug pin gage for any application requiring inspection of a 0.672-inch nominal bore to Class ZZ minus standards.

Installation Notes

Plug pin gages are installed and used by machinists, toolmakers, and quality inspection personnel. Before use, clean the gage and the bore being checked to remove chips, coolant, and debris that could affect readings. Insert the gage with light, even hand pressure only — never force a plug gage into a hole, as this can damage the gage surface or the workpiece. Store the gage in a protective case or roll when not in use to prevent nicks and corrosion that would affect accuracy.