Value Collection -40834-1 Shoulder Screw 3/4 in 4140 Steel

Product Description

The VALUE COLLECTION -40834-1 is a shoulder screw machined from 4140 alloy steel, designed for precision fastening applications where a smooth cylindrical shoulder is required to serve as a bearing surface, pivot, or spacer. The shoulder measures 0.75 inches in diameter and 1 inch in length, with a 5/8-11 UNC threaded end for secure engagement. The hex socket drive accepts a 3/8 inch drive tool. This fastener ships in a package quantity of 10 and is intended for installation by machinists, maintenance technicians, and assembly professionals working in industrial or mechanical applications.

Shoulder screws of this type are used across a wide range of industrial and mechanical assembly scenarios, including linkage pivots, die and fixture work, and sliding or rotating component guides. The uncoated 4140 alloy steel construction provides high tensile strength suitable for demanding mechanical environments. With a 1 inch head diameter and 0.5 inch head height, the fastener seats consistently against mating surfaces. This part meets ANSI B18.3, ASME/ANSI B18.3, and ASTM A574 standards, making it appropriate for applications requiring documented fastener compliance.

Key Features

• 0.75 inch shoulder diameter and 1 inch shoulder length for precise fit in bored or reamed holes
• 4140 alloy steel construction for high strength and wear resistance
• 3/8 inch hex socket drive for reliable torque application with standard socket tooling
• 5/8-11 UNC thread for broad compatibility with standard tapped holes
• Uncoated finish — suitable for applications where coating buildup on shoulder diameter is not acceptable
• Meets ANSI B18.3, ASME/ANSI B18.3, and ASTM A574 standards

Compatibility

Designed as an OEM-style replacement or direct-fit shoulder screw for industrial machinery, fixtures, dies, and mechanical assemblies requiring a 0.75 inch shoulder diameter and 5/8-11 UNC thread engagement.

Installation Notes

Installation is performed by qualified machinists or maintenance technicians using a 3/8 inch hex socket driver. Always de-energize and lock out machinery before replacing or installing shoulder screws in mechanical assemblies. Ensure the mating bore is sized to the shoulder diameter tolerance specified by the assembly design — shoulder screws are not self-tapping and require a properly prepared hole. Verify thread engagement depth meets the requirements of the application before applying load.