Value Collection SF043040 Precision Dowel Pin 5/16 Alloy Steel

Product Description

The VALUE COLLECTION SF043040 is a precision dowel pin designed for accurate alignment and location of mated components in mechanical assemblies. Manufactured from alloy steel to Material Grade 8, this pin meets ASME B18.8.2 dimensional and tolerance standards. It measures 5/16 inch in diameter with an overall length of 1-1/4 inches and holds a diameter tolerance of 0.0002 inches, making it suitable for close-tolerance fit applications. Hardness is rated at 50-58 HRC, and the pin is rated at 20,000 pounds breaking strength measured in double shear. One end is beveled and one end is rounded for guided insertion into precision-bored holes.

This dowel pin is used in tooling, fixture building, machining setups, and general mechanical assembly where repeatable part alignment is required. It is appropriate for both light industrial and heavy production environments. Machinists, tool-and-die makers, and maintenance technicians typically install these pins in drill-press or press-fit operations where hole location must be maintained across repeated assembly and disassembly cycles.

Key Features

• Alloy steel construction, Material Grade 8, for high-strength fastening applications
• 50-58 HRC hardness rating for wear and deformation resistance
• 20,000-pound double-shear breaking strength
• Diameter tolerance of 0.0002 inches for close-fit precision alignment
• One beveled end and one rounded end for controlled press-fit insertion
• Meets ASME B18.8.2 fastener standard

Compatibility

Designed as a standard ASME B18.8.2 precision dowel pin for use in any mechanical assembly or fixture application requiring a 5/16-inch diameter close-tolerance locating pin in alloy steel.

Installation Notes

Precision dowel pins are typically installed by machinists or maintenance technicians using an arbor press or hydraulic press fit. Confirm hole diameter and surface finish meet ASME B18.8.2 tolerances before installation to ensure proper fit. Do not hammer pins directly without a driver block, as this can cause damage to the pin end or the mating bore. Pins should be removed with a drift punch and press rather than by prying or twisting.