S-91273A312 3/8"-16 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and outdoor applications.
• Enhanced durability and strength offering 70,000 psi tensile strength and 35,000 psi shear strength for reliable performance under high stress.
• Precise alignment and smooth rotation due to the 1" shoulder length with tight tolerances, reducing wear and ensuring accurate assembly.
• Easy installation and removal with a 3/16" hex socket drive and knurled head, providing a secure grip and minimizing tool slippage.
• Wide compatibility and secure fastening featuring 3/8"-16 UNC coarse threads with Class 2A fit for quick assembly and vibration resistance.
• Compliance with environmental standards including RoHS 3 and REACH, ensuring safe use in regulated industries.
• Consistent performance backed by Rockwell B55 hardness, maintaining integrity over repeated use.

Professional Applications & Engineering Value

This 18-8 stainless steel shoulder screw is engineered to address common industrial challenges, such as misalignment and corrosion in precision machinery. The 1" shoulder length with controlled tolerances ensures exact positioning in assemblies like rotating shafts and pulleys, reducing friction and extending component life. Its 3/8"-16 UNC coarse threads and Class 2A thread fit provide rapid installation and reliable hold in high-vibration settings, from automotive systems to conveyor equipment. The hex socket drive and knurled head enhance torque application, preventing damage during maintenance. Made from corrosion-resistant stainless steel, it excels in moist or chemical-exposed environments, offering long-term reliability and reducing downtime for B2B buyers in manufacturing and engineering sectors.

Specification Summary & Compliance

This shoulder screw adheres to UNC thread standards with a Class 2A thread fit for precise dimensional accuracy, including a shoulder diameter tolerance of -0.004" to -0.002" and shoulder length tolerance of -0.005" to 0.005". It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for global industrial applications.