Jergens 31444 Flat Vent Pull Out Dowel Pin 5/8x3 in Alloy Steel

Product Description

The JERGENS 31444 is a flat vent pull out dowel pin designed for precision locating and alignment applications in machining, tooling, and fixture work. Manufactured from C-1215 alloy steel, this threaded-end pin provides a reliable mechanical reference point while the flat vent channel allows for air and coolant relief during insertion and extraction. At 5/8 inch in diameter and 3 inches in overall length, it meets the dimensional and tolerance requirements of ASME B18.8.2. Machinists, tool and die makers, and fixture builders are the primary installers of this component.

This dowel pin is suited for use in metalworking shops, production fixtures, jig plates, and precision assembly tooling in both light industrial and heavy manufacturing environments. The threaded end enables controlled extraction without the need for a press or drift punch, reducing the risk of bore damage during maintenance or changeover. It is appropriate for applications requiring close-tolerance locating with repeatable positioning accuracy.

Key Features

• Flat vent design relieves air and fluid pressure during pin insertion and removal
• Threaded end allows tool-assisted extraction without damaging the bore
• C-1215 alloy steel construction provides strength and machinability
• Meets ASME B18.8.2 fastener standard for dimensional compliance
• Tight diameter tolerance of -0.0001 to +0.0001 inches ensures precise locating

Compatibility

Designed as an OEM-style replacement or direct-fit component for precision fixture plates, jig assemblies, and tooling applications requiring a 5/8-inch threaded pull out dowel pin conforming to ASME B18.8.2.

Installation Notes

Installation is typically performed by a machinist or tool and die technician. Confirm bore diameter and surface finish prior to installation to maintain the specified interference or transition fit. Power down and lock out any associated machinery before servicing fixtures or tooling assemblies. Use the threaded end with an appropriate extraction tool for removal to avoid bore deformation.