Holo-krome 08102 Shoulder Screw 5/8 in Alloy Steel Hex Socket

Product Description

The HOLO-KROME 08102 is a hex socket shoulder screw machined from grade 8 alloy steel with an uncoated finish. The shoulder measures 0.625 inches in diameter and 1.5 inches in length, providing a precision bearing surface for pivots, linkages, and guided-motion assemblies. The 0.5-13 UNC threaded section extends 0.75 inches and meets ASME B1.1 and ASME B18.3 dimensional standards. Overall length is 2.625 inches. The rounded head measures 0.875 inches in diameter and 0.375 inches in height, and is driven with a 5/16-inch hex socket key. Machinists, maintenance technicians, and assembly professionals install this fastener in tooling fixtures, die sets, and mechanical assemblies where a hardened, close-tolerance shoulder is required.

This shoulder screw is suited for industrial and commercial applications where a controlled bearing surface is needed to guide, pivot, or locate moving components. Typical installations include jigs and fixtures, cam followers, hinge points, and similar mechanical assemblies in manufacturing and maintenance environments. The grade 8 alloy steel construction provides the strength and hardness expected in demanding duty cycles.

Key Features

• Shoulder diameter of 0.625 inches provides a precision bearing and locating surface
• Grade 8 alloy steel construction for high tensile and shear strength
• 1/2-13 UNC thread meets ASME B1.1 standard for consistent fit
• 5/16-inch hex socket drive for installation with standard Allen keys or socket drivers
• Uncoated finish suitable for use where post-installation plating or coating is applied
• Conforms to ASME B18.3 socket screw dimensional standard

Compatibility

Designed as a standard ASME B18.3 hex socket shoulder screw for use in industrial fixtures, tooling, and mechanical assemblies requiring a 0.625-inch shoulder diameter and 1/2-13 threaded engagement.

Installation Notes

Installation is performed by hand-threading the fastener into a tapped hole sized for 1/2-13 UNC threads, then tightening with a 5/16-inch hex key. Ensure the mating tapped hole depth is sufficient for the 0.75-inch thread length to fully engage without bottoming. Verify the shoulder bore clearance matches the 0.625-inch shoulder diameter for proper fit and function. Power down and de-energize any equipment before replacing shoulder screws in live assemblies.