S-90337A336 5/16"-18 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction and passivated finish, ideal for harsh industrial environments
• Precise component alignment through exact shoulder dimensions (3/8" diameter, 5/16" length) with tight tolerances for reliable positioning
• Enhanced durability with Rockwell B55 hardness and 70,000 psi tensile strength for long service life under heavy loads
• Space-saving low profile design with socket head and 3/16" hex drive for applications with limited clearance
• Reliable thread engagement with Class 2A UNC coarse threads ensuring consistent fastening performance
• Regulatory compliance meeting RoHS 3 and REACH standards for safe use across various industries
• Easy installation and removal with standard hex drive compatibility and right-hand thread direction

Professional Applications & Engineering Value

This precision shoulder screw addresses critical alignment challenges in machinery assembly, automation systems, and precision equipment where exact component positioning is paramount. The 18-8 Stainless Steel material combined with passivated finish provides exceptional resistance to corrosion and chemical exposure, making it suitable for food processing, medical equipment, and outdoor applications. The low-profile socket head design allows for compact installations while maintaining high torque capability. The precisely machined shoulder diameter and length serve as reliable alignment pins or bearing surfaces, eliminating the need for additional components and reducing assembly time. With Class 2A UNC threads and coarse thread spacing, it ensures quick installation and secure fastening in high-vibration environments common in industrial machinery and automotive applications.

Specification Summary & Compliance

This shoulder screw features Class 2A thread fit with UNC coarse thread spacing (5/16"-18) and precise shoulder dimensions (3/8" diameter with -0.001" to 0" tolerance, 5/16" length with 0" to 0.002" tolerance). Manufactured from 18-8 Stainless Steel with Rockwell B55 hardness and 70,000 psi tensile strength. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for industrial applications worldwide.