Holo-krome 08024 Shoulder Screw 5/16 in Alloy Steel Hex Socket

Product Description

The HOLO-KROME 08024 is a Grade 8 alloy steel shoulder screw with a 5/16-inch shoulder diameter and a 1-inch shoulder length. The hex socket drive accepts a 5/32-inch hex key for installation. The threaded section uses a 1/4-20 UNC thread with a length of 0.438 inches, giving an overall fastener length of 1.657 inches. The rounded head measures 0.419 to 0.438 inches in diameter and 0.209 to 0.219 inches in height. The uncoated finish leaves the alloy steel surface bare, suitable for applications where secondary coating or plating will be applied. This fastener is used by machinists, millwrights, and mechanical assemblers in precision fixture and machinery work.

Shoulder screws of this type are used as pivot points, guide pins, and bearing locators in jigs, fixtures, dies, and mechanical assemblies. The close-tolerance shoulder provides a precise bearing surface for rotating or sliding components. This specific size is suited for light-to-medium duty applications in both industrial and production environments. The 1/4-20 threaded end provides secure clamping into a tapped hole while the shoulder controls the depth and alignment of the mounted component.

Key Features

• 5/16-inch shoulder diameter with a 1-inch shoulder length for precise bearing and pivot applications
• Grade 8 alloy steel construction for high tensile strength under mechanical load
• 1/4-20 UNRC thread with 0.438-inch thread length for secure fastening into standard tapped holes
• 5/32-inch hex socket drive for torque application in tight or recessed locations
• Uncoated finish suitable for post-process coating, plating, or use in dry assembly conditions
• Meets ASME B1.1 and ASME B18.3 dimensional standards

Compatibility

Designed as an OEM-style replacement or standard-stock shoulder screw for mechanical assemblies requiring a 5/16-inch shoulder diameter and 1/4-20 threaded fastener conforming to ASME B18.3.

Installation Notes

Installation is performed by machinists or mechanical assemblers using a 5/32-inch hex key or socket driver. Ensure the receiving tapped hole is clean, properly threaded to 1/4-20 UNC specification, and free of debris before driving the screw. Do not exceed the rated capacity of the thread engagement when applying torque. Shoulder screws should not be used as structural tension fasteners unless the application has been engineered for that load condition.