Value Collection 711099PR Shoulder Screw 1/2 in 4140 Steel

Product Description

The VALUE COLLECTION 711099PR is a shoulder screw machined from 4140 alloy steel with a 0.5-inch shoulder diameter and a 1-5/8-inch shoulder length. The hex socket drive requires a 1/4-inch hex key for installation. The 3/4-inch head diameter and 5/16-inch head height conform to ASME/ANSI B18.3 and ASTM A574 standards. The 3/8-16 UNC threaded section provides a standard coarse-thread engagement. The uncoated finish is typical for industrial and mechanical assembly applications. Machinists, maintenance technicians, and mechanical assemblers install this type of fastener where a precision cylindrical shoulder is needed to locate or pivot a mating component.

Shoulder screws of this configuration are used in jigs, fixtures, dies, and machinery wherever a hardened, precision-ground shoulder acts as a shaft, pivot pin, or guide. The 4140 alloy steel construction provides high tensile strength and wear resistance suited to demanding mechanical environments. This screw is appropriate for both light industrial and heavy-duty production applications where tight shoulder tolerances are required for accurate component alignment.

Key Features

• 0.5-inch shoulder diameter with 1-5/8-inch shoulder length for precision location and pivoting applications
• 4140 alloy steel construction delivers high tensile strength and wear resistance
• 3/8-16 UNC thread standard for broad hardware compatibility
• 1/4-inch hex socket drive for reliable torque application with standard hex keys
• 3/4-inch head diameter and 5/16-inch head height per ASME/ANSI B18.3
• Meets ASME/ANSI B18.3 and ASTM A574 standards

Compatibility

Designed as a standard shoulder screw for use in jigs, fixtures, dies, and general mechanical assemblies requiring a 0.5-inch shoulder diameter and 3/8-16 UNC thread engagement.

Installation Notes

Installation requires a 1/4-inch hex key or hex socket driver. Power down and de-energize any equipment before fastener replacement or maintenance work. Do not exceed the torque capacity appropriate for the thread size and material grade. Inspect mating bores for correct tolerance fit before assembly to ensure the shoulder seats properly.