S-90807A131 3/8"-16 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capability with 140,000 psi tensile strength for reliable performance in high-stress applications
• Superior corrosion resistance provided by the black oxide finish, extending service life in demanding industrial environments
• Precision thread engagement with Class 3A fit ensuring secure fastening and vibration resistance in critical assemblies
• Enhanced grip and handling through the knurled head design, facilitating easier installation and removal
• Optimized drive efficiency with hex socket design and 3/16" drive size for secure tool engagement and torque transmission
• Robust material performance from alloy steel with Rockwell C32 hardness, maintaining dimensional stability under load
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for environmentally responsible manufacturing

Professional Applications & Engineering Value

This alloy steel shoulder screw delivers critical engineering solutions where precision alignment and rotational control are paramount. The 3/8"-16 UNC coarse threads with Class 3A fit provide exceptional thread engagement in metal-to-metal applications, reducing the risk of stripping in high-vibration environments common in industrial machinery, automation systems, and precision equipment. The black oxide finish offers superior corrosion protection while maintaining dimensional integrity of the precisely machined shoulder diameter, which serves as a pivot point or locating dowel in assemblies. The combination of 140,000 psi tensile strength and Rockwell C32 hardness ensures the shoulder screw maintains its critical tolerances under substantial mechanical loads, making it ideal for demanding applications in manufacturing equipment, automotive jigs, and robotic systems where reliability cannot be compromised.

Specification Summary & Compliance

This precision shoulder screw features 3/8"-16 UNC coarse threads with Class 3A thread fit for superior engagement, manufactured to exacting dimensional standards including shoulder diameter tolerance of -0.004" to -0.002" and shoulder length tolerance of -0.005" to 0.005". The component is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility while meeting industrial fastener requirements for precision, strength, and durability in demanding applications.