S-97345A198 2-56 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh environments and extended service life
• Exceptional mechanical strength offering 70,000 psi tensile and 35,000 psi shear strength for reliable performance under high stress
• Precise Class 3A thread fit ensures secure fastening with minimal backlash in critical assemblies
• Easy installation and removal with 5/64" hex socket drive and knurled head for improved grip
• Durable Rockwell B79 hardness maintains thread integrity and resists wear during repeated use
• Compliant with RoHS 3 and REACH regulations for safe use in regulated industries and global markets
• Versatile coarse UNC threading provides quick assembly and reduced cross-threading risk

Professional Applications & Engineering Value

This 316 stainless steel shoulder screw is engineered to address common industrial challenges such as component misalignment, vibration loosening, and corrosive degradation. The 2-56 UNC coarse thread with Class 3A precision fit ensures consistent clamping force in automated machinery, precision instruments, and electronic enclosures. The knurled socket head allows for secure tool engagement, reducing slippage during high-torque applications. With its high tensile and shear strength, it reliably supports rotating parts, pivots, and spacers in manufacturing equipment, medical devices, and marine hardware, where corrosion resistance and dimensional stability are critical.

Specification Summary & Compliance

This shoulder screw adheres to UNC thread standards with a Class 3A thread fit for tight tolerances. Key dimensions include a thread diameter of 0.086", shoulder diameter of 3/32" with tolerance -0.004" to -0.002", and shoulder length of 5/16" with tolerance -0.005" to 0.005". It is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring environmental safety and regulatory acceptance.