Value Collection 251280PR Oversized Dowel Pin 3/8 X 2.5 in

Product Description

The VALUE COLLECTION 251280PR is a military specification oversized dowel pin manufactured from alloy steel for use in precision alignment and fastening applications. This pin measures 3/8 inch in diameter and 2.5 inches in overall length, with one beveled end and one rounded end per ASME B18.8.2 standards. It carries a Rockwell hardness rating of 50-58 HRC and a double-shear breaking strength of 28,700 pounds, making it appropriate for high-load structural and mechanical assemblies. Machinists, maintenance technicians, and industrial assembly professionals typically specify and install this type of pin.

This oversized dowel pin is suited for applications where standard-tolerance pins no longer provide adequate fit due to hole wear or where tight interference fits are required from the start. Typical use cases include fixture alignment, jig construction, machine base registration, and tooling assemblies in industrial and defense-adjacent manufacturing environments. The ASME B18.8.2 designation confirms the pin meets recognized dimensional and material standards for this pin class.

Key Features

• Alloy steel construction with 50-58 HRC hardness for wear and shear resistance
• Double-shear breaking strength of 28,700 pounds for high-load applications
• One beveled end and one rounded end for guided insertion
• Oversized diameter tolerance of 0.0010 inch for interference-fit installations
• Meets ASME B18.8.2 fastener standard for dimensional compliance
• Military specification classification for applications requiring controlled standards

Compatibility

Designed as a military specification oversized dowel pin per ASME B18.8.2, suitable for precision alignment and fastening applications requiring an oversized interference fit in 3/8-inch nominal diameter bored or reamed holes.

Installation Notes

Installation of oversized dowel pins typically requires a reamed hole to the appropriate interference fit tolerance and is performed by machinists or maintenance technicians using an arbor press or similar controlled-force tooling. Never drive dowel pins with an unguided hammer strike, as this can damage the pin, the bore, or the mating component. Verify hole finish and diameter before pressing to avoid galling or seizing. Consult applicable engineering drawings and any relevant military or ASME standards for hole preparation requirements.