S-96125A301 4-40 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional durability in harsh environments due to nickel alloy construction, offering superior corrosion resistance for long-term reliability.
• High load-bearing capacity with 70,000 psi tensile strength and 35,000 psi shear strength, ensuring secure fastening under stress.
• Precise alignment and spacing enabled by the 1/8" shoulder diameter with tight tolerances, reducing assembly errors.
• Easy installation and removal with a 5/64" hex socket drive and knurled head, providing a firm grip and reducing tool slippage.
• Reliable thread engagement thanks to the 4-40 UNC coarse thread and Class 3A fit, minimizing loosening in high-vibration applications.
• Consistent performance in regulated industries as it is RoHS 3 and REACH compliant, meeting strict environmental and safety standards.
• Enhanced wear resistance from Rockwell B60 hardness, maintaining integrity in repetitive use scenarios.

Professional Applications & Engineering Value

This Nickel Alloy Shoulder Screw is engineered to address critical challenges in aerospace, automotive, and precision manufacturing applications. Its nickel alloy material provides excellent resistance to corrosion and oxidation, making it ideal for environments exposed to extreme temperatures and chemicals. The 4-40 UNC coarse thread with Class 3A fit ensures tight, reliable fastening that withstands vibrations, reducing maintenance needs. The 1/8" shoulder diameter with precise tolerances allows for accurate component alignment, preventing misalignment in assemblies. Combined with a hex socket drive and knurled head, it facilitates quick installation and removal, boosting efficiency in high-volume production lines while maintaining high tensile and shear strength for demanding mechanical loads.

Specification Summary & Compliance

This shoulder screw adheres to UNC thread standards with a Class 3A fit for precise thread engagement and dimensional accuracy. Key specifications include a shoulder diameter of 1/8" with tolerances from -0.004" to -0.002", and shoulder length of 1/8" with tolerances from -0.005" to 0.005". It is manufactured to meet RoHS 3 (2015/863/EU) compliance with exemption 6(c) and REACH (EC 1907/2006) standards, ensuring environmental safety and regulatory adherence for industrial use.