Jergens 31605 Pull Out Dowel Pin 1/4 X 1-3/4 Inch Alloy Steel

Product Description

The JERGENS 31605 is a pull out dowel pin designed for precise locating and alignment applications in tooling, fixtures, and machine assemblies. Manufactured from alloy steel with a threaded end, this pin allows for controlled extraction without damaging the mating bore. It measures 1/4 inch in diameter with an overall length of 1.75 inches and holds a tight diameter tolerance of -0.0001 to 0.0001 inches, meeting ASME B18.8.2 fastener standards. Machinists, tool and die makers, and maintenance technicians working on precision assemblies rely on this pin where repeatable, tight-tolerance locating is required.

This pull out dowel pin is suited for use in production tooling, jigs, fixtures, and mechanical assemblies where components must be repeatedly disassembled and reassembled in exact alignment. The threaded end accepts a removal tool or screw, making extraction straightforward even in blind-hole applications. It is commonly installed in metalworking and manufacturing environments where standard drive-in pins would be difficult or impossible to remove without damaging the workpiece or fixture plate.

Key Features

• Threaded end enables controlled extraction from blind holes without bore damage
• Alloy steel construction provides strength and wear resistance for repeated use
• Tight diameter tolerance of -0.0001 to 0.0001 inches ensures precise locating fits
• Conforms to ASME B18.8.2 fastener standard for dimensional consistency
• 1/4 inch diameter x 1.75 inch overall length suits common fixture and tooling applications

Compatibility

Designed as an OEM-style replacement or direct-use component for jigs, fixtures, and tooling assemblies that require 1/4 inch diameter dowel pin locations per ASME B18.8.2.

Installation Notes

Installation and removal should be performed by a machinist or qualified maintenance technician using appropriate hand tools or a dowel extraction screw threaded into the pin end. Ensure the receiving bore is clean, properly sized, and deburred before installation to maintain the specified tolerance fit. Power down and lock out any machinery before servicing fixtures or assemblies containing this pin. Avoid hammering the threaded end, as this can damage the extraction thread and make future removal difficult.