Holo-krome 08142 Shoulder Screw 3/4 in Alloy Steel Hex Socket

Product Description

The HOLO-KROME 08142 is an alloy steel shoulder screw designed for precision mechanical assemblies requiring a hardened, accurately dimensioned bearing surface. The shoulder measures 3/4 inch in diameter and 4 inches in length, providing a reliable pivot or guide point for bushings, bearings, and linkages. The threaded end is sized at 5/8-11 UNC with a 7/8-inch thread length. Drive engagement is through a 3/8-inch hex socket in a rounded head that measures 1 inch in diameter and 1/2 inch in height. This fastener is manufactured to ASME B18.3 and ASME B1.1 standards with an uncoated finish. It is typically installed by machinists, millwrights, and maintenance technicians in production equipment and tooling fixtures.

Shoulder screws of this type are used in jigs, fixtures, dies, and mechanical linkages across industrial and manufacturing environments. The ground shoulder acts as a precision shaft or pivot, allowing mating components such as bushings or rollers to rotate or slide freely around it. The 5/8-11 thread engagement anchors the fastener securely into a tapped hole in the parent body. This screw is suited for applications where dimensional accuracy of the shoulder is critical to proper function and fit.

Key Features

• 3/4-inch shoulder diameter with 4-inch shoulder length for extended pivot or guide applications
• Grade 8 alloy steel construction for high tensile strength and wear resistance
• 5/8-11 UNC thread with 7/8-inch thread length conforms to ASME B1.1
• 3/8-inch hex socket drive for precise torque application in confined spaces
• Rounded head, 1 inch in diameter and 1/2 inch tall, provides a low-profile clamping surface
• Manufactured to ASME B18.3 dimensional standards; uncoated finish

Compatibility

Designed as a standard shoulder screw for use in jigs, fixtures, dies, and mechanical assemblies requiring a 3/4-inch precision shoulder with 5/8-11 UNC thread engagement.

Installation Notes

Installation is performed by machinists or maintenance technicians using a 3/8-inch hex key. The mating tapped hole should be sized and toleranced per ASME B18.3 recommendations for shoulder screw applications. Ensure the tapped hole depth accommodates the full 7/8-inch thread length before torquing. Do not use the shoulder threads as a bearing surface; the shoulder body is the intended load-bearing region.