Value Collection SF043028 Precision Dowel Pin 1/4x5/8 in Grade 8

Product Description

The VALUE COLLECTION SF043028 is a precision dowel pin designed for accurate alignment and location of mating components in tooling, fixtures, and mechanical assemblies. The pin measures 0.25 inches in diameter and 0.625 inches in overall length, manufactured from alloy steel to Grade 8 material specification. It carries a hardness rating of 50-58 HRC and meets ASME B18.8.2 dimensional and tolerance standards. The diameter tolerance is held to 0.0002 inches, making it suitable for close-tolerance applications where repeatable positioning is critical. Machinists, tool and die makers, and mechanical assembly technicians are the primary installers.

This dowel pin is used in precision tooling and fixture work across industrial manufacturing, machine shops, and mechanical maintenance environments. The combination of alloy steel construction, Grade 8 material, and a tight diameter tolerance makes it appropriate for both light-duty and moderate-load alignment applications. One end is beveled for ease of insertion; the opposite end is rounded. Breaking strength is rated at 12,800 pounds in double shear, which reflects the pin's capacity to resist lateral loading in assembled joints.

Key Features

• Diameter tolerance of 0.0002 inches for precision alignment fitment
• Alloy steel construction at Grade 8 material specification
• 50-58 HRC hardness for wear resistance in high-cycle applications
• 12,800-pound breaking strength measured in double shear
• One beveled end and one rounded end for controlled insertion
• Conforms to ASME B18.8.2 fastener standard

Compatibility

Designed as an OEM-style precision locating pin for use in tooling, jigs, fixtures, and mechanical assemblies requiring ASME B18.8.2 compliant dowel pins in a 0.25-inch diameter size.

Installation Notes

Precision dowel pins are typically pressed or driven into reamed holes by machinists or mechanical assemblers using an arbor press or soft-face mallet. Ensure mating holes are reamed to the correct tolerance class before installation to avoid galling or permanent deformation of the bore. Always degrease and inspect both the pin and hole before assembly. Remove all load and de-energize any associated machinery before servicing components that include dowel pin alignment features.