Holo-krome 0800996 Hex Socket Shoulder Screw 5/8in 4140 Steel

Product Description

The HOLO-KROME 0800996 is a hex socket shoulder screw manufactured from 4140 alloy steel with an uncoated finish. The shoulder measures 0.625 inches in diameter and 1 inch in length, providing a precision bearing surface for rotating or sliding components. The 1/2-13 UNRC threaded section is 0.750 inches long, and overall length is 2.125 inches. Drive engagement is via a 5/16-inch hex socket. Head height is 0.375 inches and head diameter is 0.875 inches. This fastener is used by millwrights, maintenance technicians, and mechanical assemblers wherever a controlled-diameter shank is required to serve as a shaft, pivot, or guide pin within a bolted assembly.

Shoulder screws of this type are found in industrial machinery, jigs and fixtures, die sets, linkage assemblies, and precision mechanical devices. The shoulder acts as the functional bearing or locating surface, while the threaded end clamps into a tapped hole. This specific configuration — 5/8-inch shoulder diameter with a 1-inch shoulder length and a 1/2-13 coarse thread — suits medium-duty pivot and guide applications in both production and maintenance environments. Sold individually with a minimum order quantity of one.

Key Features

• 4140 alloy steel construction for high tensile strength and wear resistance
• Precision 0.625-inch shoulder diameter provides accurate bearing and locating surface
• 5/16-inch hex socket drive for installation with standard Allen keys or hex bits
• 1/2-13 UNRC threaded end, 0.750 inches long, for secure engagement in tapped holes
• Uncoated finish — suitable for applications where coating buildup on the shoulder is not acceptable
• Meets ASME B1.1 and ASME B18.3 standards

Compatibility

Designed as a standard ASME B18.3 hex socket shoulder screw for use in any application requiring a 5/8-inch shoulder diameter, 1-inch shoulder length, and 1/2-13 UNRC threaded end in a tapped assembly.

Installation Notes

Install using a 5/16-inch hex key or hex socket driver; ensure the mating tapped hole conforms to 1/2-13 UNRC thread specification per ASME B1.1. The shoulder must seat flush against the mating surface to function as a proper bearing or locating feature — do not overtighten in a way that deforms the shoulder seat. Torque to values appropriate for 1/2-13 alloy steel fasteners as specified by the equipment manufacturer or applicable mechanical standards. Inspect mating bore diameter to confirm it is matched to the 0.625-inch shoulder for correct fit and function.