Jergens 31448 Flat Vent Pull Out Dowel Pin 3/4 X 2-1/2 in

Product Description

The JERGENS 31448 is a flat vent pull out dowel pin designed for precision location and alignment applications in industrial and manufacturing environments. Machined from C-1215 alloy steel, this pin measures 0.75 inches in diameter and 2.5 inches in overall length, with a threaded end that allows controlled extraction without damaging mating components. The tight diameter tolerance of -0.0001 to 0.0001 inches ensures repeatable, accurate positioning in jigs, fixtures, dies, and tooling assemblies. This pin meets ASME B18.8.2 standards and is suited for use by toolmakers, machinists, and maintenance technicians who require reliable alignment hardware.

This dowel pin is used in precision fixturing, die sets, and machine tool assemblies where components must be repeatedly located and disassembled. The flat vent groove allows trapped air and lubricant to escape during installation, reducing hydraulic lock in blind holes. The threaded pull out end enables removal with a standard extraction tool, making it well suited for applications where press-fit pins must be serviced or replaced without damaging the workpiece or housing bore.

Key Features

• Threaded end for clean, controlled extraction from blind holes
• Flat vent design prevents hydraulic lock during pin installation
• Diameter tolerance of -0.0001 to 0.0001 inches for precision alignment
• C-1215 alloy steel construction for strength and machinability
• Conforms to ASME B18.8.2 fastener standard

Compatibility

Designed as an OEM-style replacement or direct-fit component for precision jigs, fixtures, dies, and tooling assemblies requiring a 0.75-inch diameter flat vent pull out dowel pin per ASME B18.8.2.

Installation Notes

Installation and removal of precision dowel pins is typically performed by toolmakers or maintenance machinists. Ensure the receiving bore is clean, correctly sized, and deburred before pressing the pin into place. Use a proper extraction tool threaded into the pull out end to remove the pin without damaging the bore. Refer to applicable shop standards and ASME B18.8.2 for recommended hole tolerances and fit classes.