Value Collection 251238PR Oversized Dowel Pin 5/16x2.5in

Product Description

The VALUE COLLECTION 251238PR is a military specification oversized dowel pin designed for precision alignment and fastening in demanding industrial and mechanical applications. Manufactured from alloy steel, this pin meets ASME B18.8.2 standards and carries a Rockwell hardness rating of 50-58 HRC, making it suitable for high-load and high-wear environments. It measures 5/16 inch in diameter with an overall length of 2.5 inches. The end configuration features one beveled end and one rounded end, aiding installation and controlled insertion into close-tolerance bores. Licensed trades and industrial maintenance technicians working on precision assemblies will find this pin dimensioned to tight tolerances for reliable fitment.

This dowel pin is used in applications requiring oversized, close-tolerance alignment — such as fixture building, machine tool assembly, die sets, and military or aerospace-grade mechanical assemblies where standard pins cannot achieve the required fit. Its 0.0010-inch diameter tolerance supports interference and transition fits. The double shear breaking strength of 20,000 pounds makes it appropriate for structural and load-bearing alignment functions in both production and maintenance settings.

Key Features

• Alloy steel construction with 50-58 HRC hardness for wear and shear resistance
• Double shear breaking strength of 20,000 pounds for high-load applications
• One beveled end and one rounded end for controlled insertion
• Diameter tolerance of 0.0010 inches for precision close-tolerance fits
• Meets ASME B18.8.2 military specification fastener standard

Compatibility

Designed as an OEM-style replacement or direct-use oversized dowel pin for precision mechanical assemblies requiring ASME B18.8.2-compliant military specification pins with a 5/16-inch diameter and 2.5-inch length.

Installation Notes

Installation of precision dowel pins is typically performed by machinists, millwrights, or maintenance technicians using a pin press or arbor press — never a standard hammer, which can damage the bore or pin geometry. Ensure the receiving bore is clean, deburred, and within the required tolerance before pressing the pin. When removing existing pins, use a proper punch and extraction tool to avoid bore damage. Follow applicable ASME and facility safety standards during assembly and disassembly.