S-97345A255 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.
• High mechanical strength offering 70,000 psi tensile and 35,000 psi shear strength for reliable performance under heavy loads.
• Precise alignment and spacing ensured by the 1-1/2" shoulder with tight tolerances and Class 3A thread fit.
• Easy and secure installation with a hex socket drive and knurled head for improved grip and torque application.
• Durable and wear-resistant material with Rockwell B79 hardness, maintaining integrity through repeated use.
• Broad compatibility with 2-56 UNC coarse right-hand threads, suitable for standard industrial assemblies.
• Environmental compliance meeting RoHS 3 and REACH standards, ensuring safe and sustainable use.

Professional Applications & Engineering Value

This 316 stainless steel shoulder screw is engineered to address critical challenges in precision machinery, automation systems, and assembly jigs where corrosion resistance and exact part alignment are paramount. The 1-1/2" shoulder length with minimal tolerance provides a stable pivot or spacer, reducing wear and misalignment in rotating components. Its Class 3A thread fit and UNC coarse threads facilitate quick assembly and disassembly while maintaining high clamping force. The hex socket drive and knurled head enhance installation efficiency in confined spaces, making it a reliable choice for industrial applications demanding durability and precision under dynamic loads.

Specification Summary & Compliance

This shoulder screw features a 2-56 UNC thread with Class 3A fit for high precision, a shoulder diameter of 3/32" with tolerance from -0.004" to -0.002", and a shoulder length of 1-1/2" with tolerance from -0.005" to 0.005". It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to environmental and safety standards for industrial use.