S-94496A420 3/8"-16 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with 70,000 psi tensile strength and 35,000 psi shear strength for reliable performance in high-stress assemblies.
• Enhanced corrosion resistance through zinc plating, extending service life in industrial environments prone to moisture and oxidation.
• Precise shoulder alignment with a 2 1/4" shoulder length and tight diameter tolerance, ensuring accurate component positioning and reduced wear.
• Easy installation and removal with a 3/4" external hex head and coarse UNC threads, allowing for quick assembly with standard tools.
• Consistent thread engagement due to Class 2A thread fit, minimizing cross-threading risks and improving fastener reliability.
• Durable material construction from steel with Rockwell B80 hardness, offering excellent resistance to deformation under repeated use.
• Compliance with global regulations including RoHS 3 and REACH, ensuring safe and sustainable use in regulated industries.

Professional Applications & Engineering Value

This steel shoulder screw is engineered to address critical alignment and pivot point requirements in machinery, automation, and precision equipment. The 3/8"-16 UNC coarse thread and 2 1/4" shoulder length provide a stable unthreaded bearing surface that supports rotating components like gears, pulleys, and linkages, reducing friction and preventing axial movement. The zinc plating offers a protective barrier against rust, making it suitable for applications in manufacturing, automotive, and outdoor equipment where exposure to harsh conditions is common. With its external hex drive and right-hand thread, it ensures straightforward installation in tight spaces, enhancing assembly efficiency while maintaining high tensile and shear strength for long-term operational integrity.

Specification Summary & Compliance

This shoulder screw adheres to Class 2A thread fit and UNC standards for dimensional accuracy, with shoulder diameter tolerance of -0.004" to 0" and shoulder length tolerance of -0.005" to 0.005". It conforms to RoHS 3 (2015/863/EU) with exemption 6(a) for lead as an alloying element in steel and is REACH (EC 1907/2006) compliant, meeting environmental and safety regulations for industrial use.