Holo-krome 0800994 Hex Socket Shoulder Screw 5/8 in

Product Description

The HOLO-KROME 0800994 is a hex socket shoulder screw manufactured from 4140 alloy steel with an uncoated finish. The shoulder measures 0.625 inches in diameter and 0.75 inches in length, providing a precision bearing surface for rotating or sliding components. The threaded end is 1/2-13 UNRC with a 0.75-inch thread length, and the rounded head stands 0.375 inches tall with a 0.875-inch diameter. A 5/16-inch hex socket drive is used for installation. This fastener is suited for mechanical assemblies where a controlled-fit shoulder is required to act as a shaft, pivot, or guide pin. Licensed mechanics, millwrights, and maintenance technicians are the primary installers.

This shoulder screw is used in industrial and mechanical applications where precise shoulder-to-bore fits are critical. Typical installations include fixture plates, jigs, linkages, and pivot assemblies across manufacturing, tooling, and mechanical maintenance environments. The 4140 alloy steel construction provides strength suitable for load-bearing pivot and guide applications. The uncoated finish is appropriate for applications where post-installation coating or lubrication will be applied, or where bare steel is acceptable. Overall length is 1.875 inches.

Key Features

• 4140 alloy steel construction for high strength and wear resistance in load-bearing applications
• Precision 0.625-inch shoulder diameter provides accurate fit for bearing bores and guided assemblies
• 5/16-inch hex socket drive allows installation with standard Allen or hex key tools
• 1/2-13 UNRC threaded end conforms to ASME B1.1 thread standards
• Rounded head profile with 0.875-inch diameter seats flush against mating surfaces
• Meets ASME B18.3 socket screw standards for dimensional consistency

Compatibility

Designed as an OEM-style replacement or direct-use shoulder screw for mechanical assemblies requiring a 5/8-inch shoulder diameter and 1/2-13 UNRC threaded engagement, conforming to ASME B18.3 and ASME B1.1 standards.

Installation Notes

Installation should be performed by a qualified mechanic or maintenance technician familiar with precision fastener assemblies. Ensure the receiving bore is clean and dimensionally matched to the 0.625-inch shoulder before installation. Use a 5/16-inch hex key to drive the screw to the appropriate torque for the application per relevant engineering specifications. Do not apply thread-locking compounds to the shoulder portion, as this may interfere with the fit of rotating or sliding components.