Value Collection BD-34903-1 Alloy Steel Dowel Pin Grade 8

Product Description

The VALUE COLLECTION BD-34903-1 is a Grade 8 alloy steel standard dowel pin used to align, locate, and retain components in mechanical assemblies. At 0.375 inches in diameter and 1.75 inches in pin length, this pin delivers a close-tolerance fit suited for precision fixturing, jig construction, and machine component alignment. It carries a Rockwell C hardness rating of 50-58 and a double-shear breaking strength of 28,700 pounds, making it appropriate for high-load applications. One end is beveled and one end is rounded for easier press-fit installation into through or blind holes. Machinists, tool and die makers, and maintenance technicians are the primary installers.

This dowel pin is used in industrial and manufacturing environments where repeatable part location is critical. Common applications include fixture plates, mold bases, die sets, gearboxes, and structural assemblies requiring tight positional tolerances. The 0.0002 inch diameter tolerance ensures consistent fit in reamed holes, which is essential for maintaining alignment across assemblies that are disassembled and reassembled repeatedly. Sold in packages of 25, this pin is a standard stocking item for machine shops and maintenance departments.

Key Features

• Grade 8 alloy steel construction with Rockwell C hardness of 50-58 for wear and shear resistance
• Double-shear breaking strength of 28,700 pounds supports high-load alignment applications
• Diameter tolerance of 0.0002 inches for precision fit in reamed holes
• One beveled end and one rounded end for controlled press-fit installation
• Packaged in quantities of 25 for shop stocking and maintenance inventory

Compatibility

Designed as an OEM-style replacement or standard-stock dowel pin for mechanical assemblies requiring a 0.375 inch diameter, 1.75 inch length, Grade 8 alloy steel pin with close diameter tolerances.

Installation Notes

Installation is typically performed by machinists or maintenance technicians using a hydraulic or mechanical press. The mating hole should be finish-reamed to the appropriate tolerance before installation to ensure proper fit. Never drive dowel pins with a hammer blow to the shank, as this can damage the pin or distort the hole. Confirm hole depth and clearance before pressing a blind-hole installation to avoid hydraulic lock.