S-94496A390 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 demanding applications.
• Enhanced corrosion resistance from zinc plating, extending service life in various industrial environments.
• Precise alignment and smooth rotation due to the 2 1/8" shoulder length with standard fit, reducing wear on mating components.
• Easy and secure installation with an external hex drive and smooth hex head, allowing for high torque application with standard tools.
• Reliable thread engagement from 3/8"-16 UNC coarse threads with Class 2A fit, ensuring quick assembly and vibration resistance.
• Consistent mechanical properties with Rockwell B80 hardness, providing durability and resistance to deformation under stress.
• Compliance with environmental regulations including RoHS 3 and REACH, making it suitable for global supply chains and sensitive applications.

Professional Applications & Engineering Value

This steel shoulder screw is engineered to address critical challenges in machinery and equipment assembly, where precise alignment and high strength are paramount. The 2 1/8" shoulder length acts as a durable pivot or axle, minimizing friction and wear in rotating parts like gears, pulleys, and linkages. The 3/8"-16 UNC coarse thread with Class 2A fit ensures rapid, secure fastening, reducing installation time while maintaining integrity under dynamic loads. With a zinc-plated finish, it offers reliable corrosion protection in environments exposed to moisture or chemicals, extending component life. Ideal for industrial applications such as automotive systems, conveyor mechanisms, and heavy-duty fixtures, this screw provides a robust fastening solution that enhances operational reliability and reduces maintenance frequency.

Specification Summary & Compliance

This shoulder screw features precise dimensional tolerances, including a shoulder diameter of 1/2" with a tolerance of -0.004" to 0" and a shoulder length of 2 1/8" with a tolerance of -0.005" to 0.005". The threads adhere to UNC standards with a Class 2A fit for consistent performance. It is manufactured from high-strength steel and complies with RoHS 3 (2015/863/EU) with exemption 6(a) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for various industrial sectors.