S-96125A305 4-40 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance from nickel alloy material, ideal for harsh industrial environments.
• High tensile strength of 70,000 psi ensures reliable performance under heavy loads and stress.
• Precision Class 3A thread fit guarantees secure, vibration-resistant assemblies with minimal backlash.
• Superior wear resistance due to Rockwell B60 hardness, extending service life in demanding applications.
• Easy installation and removal with 5/64" hex socket drive and knurled head for improved grip.
• Robust shear strength of 35,000 psi provides added safety in dynamic or high-torque scenarios.
• Compliance with RoHS 3 and REACH regulations ensures environmental and safety standards are met for global use.

Professional Applications & Engineering Value

This 4-40 UNC thread Nickel Alloy Shoulder Screw is engineered to address common industrial challenges such as component misalignment, wear, and corrosion. The coarse thread and Class 3A precision fit enable quick, secure fastening in machinery, automotive, and aerospace assemblies, reducing installation time and maintenance needs. The nickel alloy construction offers excellent resistance to oxidation and chemical exposure, making it suitable for extreme temperature and corrosive environments. With a knurled head and hex socket drive, it ensures non-slip handling and efficient torque application, enhancing productivity in high-volume manufacturing and precision engineering applications.

Specification Summary & Compliance

This shoulder screw adheres to UNC thread standards with a Class 3A fit for tight tolerances and reliable performance. Dimensions include a thread diameter of 0.112", shoulder diameter of 1/8" (tolerance: -0.004" to -0.002"), and shoulder length of 3/8" (tolerance: -0.005" to 0.005"). It meets RoHS 3 (2015/863/EU) with exemption 6(c) and is REACH (EC 1907/2006) compliant, ensuring adherence to international environmental and safety regulations for industrial components.