Value Collection 34917 Pull Out Dowel Pin 1/2x3 in Alloy Steel

Product Description

The VALUE COLLECTION 34917 is a standard pull out dowel pin machined from alloy steel to Grade 8 specifications. It measures 1/2 inch in diameter and 3 inches in overall length, with a diameter tolerance of 0.0002 inches for precise hole alignment and repeatable part location. One end is beveled for easy insertion; the opposite end is rounded to facilitate extraction using a slide hammer or pull-out tool. Rockwell hardness is rated C 50-58, providing the wear resistance required in high-cycle tooling and fixture applications. This pin meets ASME B18.8.2, the governing standard for hardened ground machine dowel pins.

Pull out dowel pins are used in jigs, fixtures, dies, and machine assemblies where accurate component positioning is critical and the pin must be removable for maintenance or changeover. The pull out design is preferred over standard drive pins in blind-hole installations where the pin cannot be driven from the opposite side. These pins are commonly installed by tool and die makers, machinists, and maintenance technicians working on production tooling and precision assemblies.

Key Features

• Grade 8 alloy steel construction with Rockwell C 50-58 hardness for wear resistance in high-cycle applications
• One beveled end for guided insertion into close-tolerance holes
• One rounded end designed for engagement with pull-out tooling in blind-hole installations
• Diameter tolerance of 0.0002 inches ensures consistent, repeatable part location
• Conforms to ASME B18.8.2 for dimensional and hardness compliance
• 1/2 inch diameter x 3 inches overall length suits a wide range of tooling and fixture configurations

Compatibility

Designed as an OEM-style replacement or new-installation dowel pin for jigs, fixtures, dies, and precision machine assemblies requiring a 1/2 inch diameter pull out style pin per ASME B18.8.2.

Installation Notes

Installation and removal should be performed by a qualified machinist or maintenance technician familiar with close-tolerance fastener work. Ensure the mating hole is reamed to the correct tolerance before installation to avoid galling or pin seizure. Power down and de-energize all associated machinery before servicing any tooling or fixture components. Use appropriate pull-out tooling, such as a slide hammer with the correct thread adapter, to remove the pin without damaging the bore.