Jergens 31639 Pull Out Dowel Pin 5/8 X 1.5 Inch Alloy Steel

Product Description

The JERGENS 31639 is a pull out dowel pin designed for precise alignment and positioning in machined assemblies. Manufactured from alloy steel with a threaded end for extraction, this pin measures 5/8 inch in diameter and 1.5 inches in overall length. The tight diameter tolerance of -0.0001 to +0.0001 inches ensures accurate hole-to-hole alignment in jigs, fixtures, dies, and other close-tolerance applications. Compliance with ASME B18.8.2 confirms dimensional consistency across production batches. Machinists, toolmakers, and maintenance technicians working on precision fixtures and machine components are the primary users of this fastener.

Pull out dowel pins are used in industrial and manufacturing environments where a standard press-fit pin is difficult to remove without a threaded extraction point. The 31639 is suited for tooling plates, fixture bases, die sets, and production machinery where repeated disassembly is required. The threaded end allows a slide hammer or extraction tool to pull the pin cleanly without damaging the parent bore. This style is common in both OEM equipment assembly and MRO replacement applications across general machining, metalworking, and fabrication shops.

Key Features

• Threaded end design allows clean extraction without bore damage
• Alloy steel construction for strength in high-load alignment applications
• Diameter tolerance of -0.0001 to +0.0001 inches for close-fit precision
• Meets ASME B18.8.2 dimensional standard for interchangeability
• 5/8 inch diameter by 1.5 inch length suits common fixture and tooling applications

Compatibility

Designed as an OEM-style replacement or new-installation dowel pin for precision fixtures, jigs, dies, and machined assemblies requiring a 5/8 inch diameter pull out style pin conforming to ASME B18.8.2.

Installation Notes

Installation and removal of this dowel pin should be performed by a qualified machinist or toolmaker. Ensure the mating bore is clean, properly sized, and deburred before pressing the pin. Use appropriate extraction tooling threaded to the pin end for removal - do not drive or pry from the side, as this can damage the bore or pin. Follow applicable facility safety and lockout/tagout procedures before servicing any fixture or die set containing this component.