Jergens 31426 Flat Vent Pull Out Dowel Pin 7/16 X 1.5 in

Product Description

The JERGENS 31426 is a flat vent pull out dowel pin machined from alloy steel to material grade C-1215. It measures 7/16 inch in diameter and 1.5 inches in overall length, with a threaded end that allows controlled extraction from a mating hole. The diameter tolerance is held to -0.0001 to 0.0001 inches, providing the close-tolerance fit that precision fixtures, jigs, and tooling applications require. Manufactured to ASME B18.8.2, this pin meets an established dimensional standard recognized across industrial and metalworking operations. Machinists, tool and die makers, and maintenance technicians install this type of pin where repeatable alignment and straightforward removal are both critical.

The 31426 is suited for use in precision fixturing, workholding setups, and machine alignment applications found in manufacturing and industrial maintenance environments. The flat vent groove along the body allows air and lubricant to escape during insertion, preventing hydraulic lock in blind holes. The threaded pull out end gives technicians a reliable extraction point when disassembly is required, reducing the risk of damage to the surrounding bore or component. This pin is appropriate for both production tooling and one-off fixture builds where a removable, close-tolerance locating pin is specified.

Key Features

• Flat vent groove prevents air lock and allows lubricant escape in blind hole applications
• Threaded end provides a positive pull out point for clean, controlled removal
• Diameter tolerance of -0.0001 to 0.0001 inches ensures tight, repeatable locating fits
• Alloy steel construction grade C-1215 delivers consistent machinability and dimensional stability
• Conforms to ASME B18.8.2 for standardized dimensional compliance
• Compact 1.5-inch length suits shallow-to-medium depth fixture and tooling applications

Compatibility

Designed as an OEM-style replacement or direct-specification dowel pin for precision fixturing, jigs, and alignment tooling requiring a 7/16-inch diameter flat vent pull out pin conforming to ASME B18.8.2.

Installation Notes

Installation is typically performed by machinists or tool and die technicians using a press or hand driver appropriate for close-tolerance dowel work. Ensure the receiving bore is clean, deburred, and dimensionally verified before insertion. Apply a light film of compatible lubricant to the pin body to ease installation and protect the bore surface. Use the threaded pull out end with an appropriate extractor or threaded puller rod for removal - never drive the pin from the side or use impact methods that could deform the bore.