S-90292A020 4-40 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance and durability from 17-4 PH Stainless Steel construction, ideal for harsh industrial environments.
• Exceptional mechanical strength with a 130,000 psi tensile strength and 65,000 psi shear strength for reliable performance under high stress.
• Precise and secure assembly ensured by the Class 3A thread fit, minimizing the risk of loosening in critical applications.
• Easy installation and removal with a 5/64" hex socket drive and a knurled head for improved grip and tool engagement.
• Accurate component alignment provided by the precision shoulder with tightly controlled diameter and length tolerances.
• Wide compatibility with standard 4-40 UNC coarse threads, facilitating use in various machinery and assemblies.
• Compliance with major environmental regulations including RoHS 3 and REACH, ensuring suitability for global markets.

Professional Applications & Engineering Value

This 17-4 PH Stainless Steel Shoulder Screw is engineered to address critical challenges in precision assembly and high-stress environments. Its Class 3A thread fit and UNC coarse thread design ensure vibration resistance and reliable fastening in dynamic applications such as rotating machinery, automation systems, and precision instruments. The knurled head and hex socket drive allow for secure tool engagement, reducing slippage during installation. The precisely machined shoulder provides a stable bearing surface for pivoting parts or maintaining precise gaps, eliminating misalignment issues. With a high tensile strength of 130,000 psi and excellent hardness (Rockwell C28), it withstands heavy loads and repetitive use, making it a dependable choice for aerospace, automotive, and industrial equipment where failure is not an option.

Specification Summary & Compliance

This shoulder screw adheres to inch system measurements with a 4-40 UNC coarse thread and Class 3A thread fit for high precision. The shoulder features a diameter of 1/8" (tolerance: -0.004" to -0.002") and a length of 3/8" (tolerance: -0.005" to 0.005"). It is manufactured from 17-4 PH Stainless Steel with a hardness of Rockwell C28, tensile strength of 130,000 psi, and minimum shear strength of 65,000 psi. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations.