Value Collection -40824-1 Shoulder Screw 5/8 in Alloy Steel

Product Description

The VALUE COLLECTION -40824-1 is a Grade 8 alloy steel shoulder screw designed for precision fastening applications that require a hardened, close-tolerance shoulder to serve as a locating pin, pivot, or guide shaft. The screw features a 5/8-inch shoulder diameter and a 2-1/4-inch shoulder length, with a 1/2-13 UNC threaded end for secure engagement. Drive is via a 5/16-inch hex socket. The uncoated finish suits applications where surface treatments are applied downstream or where bare steel performance is acceptable. Installation is performed by maintenance technicians and mechanical assemblers working on industrial and commercial equipment.

This shoulder screw is suited for use in machinery, fixtures, jigs, linkage assemblies, and mechanical sub-assemblies where a precision-ground shoulder must carry shear loads or provide a bearing surface. The 7/8-inch head diameter and 3/8-inch head height seat firmly against mating surfaces without protruding excessively. Sold in a package quantity of 25, the part accommodates both single-unit service calls and small-batch production or maintenance runs.

Key Features

• 5/8-inch shoulder diameter with 2-1/4-inch shoulder length for precise location and pivot applications
• Grade 8 alloy steel construction for high tensile and shear strength
• 1/2-13 UNC thread standard for broad hardware compatibility
• 5/16-inch hex socket drive for controlled torque application with standard Allen tooling
• Uncoated finish — compatible with post-installation surface treatment processes
• Meets ANSI B18.3, ASME/ANSI B18.3, and ASTM A574 standards

Compatibility

Designed as a standard shoulder screw for use in mechanical assemblies requiring a 5/8-inch shoulder diameter, 2-1/4-inch shoulder length, and 1/2-13 UNC threaded engagement in Grade 8 alloy steel.

Installation Notes

Shoulder screws of this type are installed by maintenance technicians and mechanical assemblers using a 5/16-inch hex key or socket driver. Ensure the tapped hole is clean and thread engagement depth is sufficient for the 1/2-13 UNC thread before driving. Apply appropriate thread-locking compound or preload as required by the assembly specification. Do not overtighten, as the shoulder — not the head — is the functional bearing surface.