S-94496A370 3/8"-16 Shoulder Screws

Key Features & Benefits at a Glance

• Enhanced Durability & Corrosion Resistance: Zinc plating provides reliable protection against rust and environmental wear, extending service life in demanding industrial settings.
• High Tensile & Shear Strength: With a tensile strength of 70,000 psi and minimum shear strength of 35,000 psi, this screw ensures secure, long-lasting assemblies under high-stress conditions.
• Precision Shoulder for Accurate Alignment: The 2" shoulder with standard fit and tight diameter tolerance ensures precise component positioning and reduces wear on mating parts.
• Easy Installation & Removal: The external hex head design allows for quick, tool-friendly fastening with standard wrenches, improving assembly efficiency.
• Wide Compatibility with Coarse Threads: 3/8"-16 UNC coarse threads and Class 2A fit offer excellent engagement and vibration resistance in various materials.
• Consistent Hardness for Reliable Performance: Rockwell B80 hardness ensures the screw maintains its shape and thread integrity through repeated use and torque applications.
• Compliance with Environmental Standards: Meets RoHS 3 and REACH regulations, making it suitable for use in regulated industries and global supply chains.

Professional Applications & Engineering Value

This steel shoulder screw is engineered to address common challenges in machinery assembly, pivoting mechanisms, and precision equipment. The 2" shoulder length acts as a precise axle or spacer, eliminating the need for additional bushings and reducing assembly complexity. The zinc plating offers a cost-effective barrier against corrosion, which is critical in environments with moisture or chemical exposure. With 3/8"-16 UNC coarse threads and an external hex drive, it provides quick installation and high clamp force, resisting loosening under vibration. Its 70,000 psi tensile strength and Rockwell B80 hardness ensure it can handle dynamic loads in automotive, conveyor systems, and industrial robotics, where alignment and durability are paramount.

Specification Summary & Compliance

This shoulder screw features a 3/8"-16 UNC thread with Class 2A fit for standard tolerance and easy assembly. The shoulder diameter is 1/2" with a tolerance of -0.004" to 0", and the shoulder length is 2" with a tolerance of -0.005" to 0.005". It complies with RoHS 3 (2015/863/EU) under exemption 6(a) for lead in steel and is REACH (EC 1907/2006) compliant, ensuring it meets current environmental and safety regulations for industrial use.