Value Collection 711038PR Shoulder Screw 5/16 in 1/4-20

Product Description

The VALUE COLLECTION 711038PR is a shoulder screw machined from 4140 alloy steel, designed for precision fastening applications where a smooth, hardened shaft is required between mating components. The shoulder measures 0.312 inches in diameter and 0.25 inches in length, providing a tight-tolerance bearing or pivot surface. The fastener uses a 1/4-20 UNC thread and is driven with a 5/32 inch hex socket key. The uncoated finish is standard for this grade. This type of fastener is installed by machinists, maintenance technicians, and mechanical assemblers working in industrial, manufacturing, and equipment repair environments.

Shoulder screws of this configuration are commonly used in jigs, fixtures, die sets, and mechanical linkages where a rotating or sliding fit is needed at the shoulder. The 5/16 inch shoulder diameter and short 1/4 inch shoulder length suit applications requiring a compact pivot point or guide post. The 1/4-20 UNC threaded end anchors the screw into a tapped hole in the base material, while the shoulder extends above to interface with a bearing, bushing, or mating part. This fastener is sold individually but requires a minimum order quantity of 25 units.

Key Features

• 4140 alloy steel construction for high tensile strength and wear resistance at the shoulder surface
• Shoulder diameter of 0.312 inches (5/16 inch nominal) for close-tolerance fits
• Short 0.25 inch shoulder length suits compact assemblies and thin-plate applications
• 1/4-20 UNC threaded end for secure anchoring in standard tapped holes
• 5/32 inch hex socket drive for installation with a standard hex key or Allen driver
• Meets ANSI B18.3 and ASME/ANSI B18.3 dimensional standards and ASTM A574 mechanical requirements

Compatibility

Designed as a standard shoulder screw for use in jigs, fixtures, die sets, and mechanical assemblies requiring a 5/16 inch shoulder diameter with a 1/4-20 UNC threaded end.

Installation Notes

Installation is typically performed by a machinist or maintenance technician using a 5/32 inch hex key or T-handle driver. Ensure the mating tapped hole is clean and correctly sized to 1/4-20 UNC before driving the screw. De-energize and lock out any machinery before installing or removing shoulder screws in live equipment. Do not over-torque the threaded section, as the shoulder length is fixed and excess force can damage the mating bore or thread.