Jergens 31443 Flat Vent Pull Out Dowel Pin 5/8 X 2.5 in

Product Description

The JERGENS 31443 is a flat vent pull out dowel pin machined from C-1215 alloy steel and manufactured to ASME B18.8.2 standards. It measures 5/8 inch in diameter and 2.5 inches in overall length, with a threaded end design that allows controlled extraction from blind holes. The flat vent channel along the pin body allows trapped air and lubricant to escape during press-fit installation, reducing hydraulic lock. This pin is used in precision fixturing, tooling, and mechanical assembly applications by machinists, tool and die makers, and industrial maintenance technicians.

Flat vent pull out dowel pins are specified in applications where a standard solid pin cannot be retrieved without damage to the workpiece or fixture. The threaded end accepts a standard puller or threaded rod, enabling clean removal from tight-tolerance bores. Typical use cases include jig and fixture plates, die sets, and machine component alignment where repeated disassembly is required. The tight diameter tolerance of -0.0001 to +0.0001 inches ensures consistent location accuracy across assembly cycles.

Key Features

• Flat vent design relieves hydraulic pressure during insertion, preventing galling and easing press-fit installation
• Threaded end enables controlled extraction without damaging the mating bore
• Diameter tolerance of -0.0001 to +0.0001 inches supports precise locating applications
• C-1215 alloy steel construction provides good machinability and consistent mechanical properties
• Manufactured to ASME B18.8.2 fastener standard for dimensional conformance

Compatibility

Designed as an OEM-style replacement or direct-fit component for jigs, fixtures, die sets, and precision tooling assemblies requiring a 5/8-inch diameter pull out dowel pin per ASME B18.8.2.

Installation Notes

Installation and removal should be performed by a qualified machinist or maintenance technician. Ensure the mating bore is clean, deburred, and within tolerance before driving the pin. Power down and de-energize any associated equipment before servicing tooling or fixtures. Use a proper pin driver or press for installation and a threaded puller for extraction - do not strike the threaded end directly.