Holo-krome 08022 Shoulder Screw 5/16 in Alloy Steel Hex Socket

Product Description

The HOLO-KROME 08022 is a hex socket shoulder screw machined from Grade 8 alloy steel for use in precision mechanical assemblies, jigs, fixtures, and tooling applications. The shoulder diameter measures 0.312 inches with a shoulder length of 0.75 inches, providing a precise bearing surface for rotating or sliding components such as linkages, hinges, and pivot points. The 1/4-20 UNRC thread has a length of 0.438 inches. Drive engagement is via a 5/32-inch hex socket. The part ships uncoated and meets ASME B1.1 and ASME B18.3 standards. Licensed machinists, millwrights, and maintenance technicians typically install this fastener in both production and MRO settings.

This shoulder screw is suited for industrial, commercial, and manufacturing environments where a controlled-diameter shoulder is required to serve as a precision shaft, pivot, or guide post. Typical applications include die sets, automation fixtures, cam mechanisms, and any assembly requiring a ground shoulder to align or retain a bearing, bushing, or sliding component. The rounded head profile keeps the fastener low-profile in confined assemblies. With an overall length of 1.407 inches, it fits standard fastener clearances in medium-duty tooling and machinery.

Key Features

• Grade 8 alloy steel construction for high tensile strength in load-bearing fastener applications
• Precision shoulder diameter of 0.312 inches for accurate fit in bored or reamed holes
• 5/32-inch hex socket drive for installation with standard Allen keys or hex bit drivers
• 1/4-20 UNRC threaded end with 0.438-inch thread length for secure clamping engagement
• Uncoated finish suitable for use as-received or for post-installation treatment
• Meets ASME B1.1 and ASME B18.3 dimensional and thread standards

Compatibility

Designed as an OEM-style replacement or direct-install shoulder screw for mechanical assemblies requiring a 5/16-inch shoulder diameter, 3/4-inch shoulder length, and 1/4-20 threaded end conforming to ASME B18.3.

Installation Notes

Installation is performed by machinists, millwrights, or maintenance technicians using a 5/32-inch hex key or hex socket driver. De-energize and lock out all machinery before servicing any fastener in a live assembly. Ensure the mating hole is bored or reamed to the appropriate tolerance for shoulder screws per ASME B18.3 to achieve proper fit and prevent premature wear. Do not use impact drivers on hex socket shoulder screws, as this can damage the socket or distort the shoulder.