S-91273A536 5/16"-18 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and reducing replacement costs.
• Enhanced assembly precision due to the Class 2A thread fit and standard shoulder, ensuring consistent alignment and reduced part wear.
• High mechanical strength offering 70,000 psi tensile and 35,000 psi shear strength for reliable performance in demanding applications.
• Secure and easy installation with a knurled socket head and 5/32" hex drive, providing excellent grip and torque transmission.
• Durable and long-lasting with Rockwell B55 hardness, maintaining integrity under repeated use and stress.
• Broad regulatory compliance including RoHS 3 and REACH, ensuring safety and environmental standards for global supply chains.
• Optimized for coarse threading with UNC 5/16"-18, facilitating quick assembly and disassembly in various industrial settings.

Professional Applications & Engineering Value

This 18-8 stainless steel shoulder screw is engineered to address common industrial challenges such as misalignment, corrosion, and mechanical failure. Its 3/8" shoulder length and precise Class 2A thread fit provide stable pivoting and locating functions in machinery, automotive, and electronics assemblies. The knurled socket head enhances grip during installation, reducing slippage in high-torque scenarios. Made from durable 18-8 stainless steel, it resists rust and oxidation, extending service life in humid or corrosive environments. With a coarse UNC thread, it ensures rapid fastening in production lines, making it ideal for precision shoulder screw applications where reliability and compliance with RoHS and REACH are critical for B2B procurement.

Specification Summary & Compliance

This shoulder screw features precise dimensions including a shoulder diameter of 5/16" with tolerance of -0.004" to -0.002" and shoulder length of 3/8" with tolerance of -0.005" to 0.005". It adheres to UNC thread standards with a Class 2A thread fit for consistent performance. Manufactured to high specifications, it complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets environmental and safety requirements for industrial use.