S-90292A005 4-40 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance and strength from 17-4 PH Stainless Steel, ideal for harsh environments and long-term reliability.
• Exceptional precision and secure fit with Class 3A thread fit, minimizing backlash and ensuring accurate alignment in assemblies.
• High mechanical durability with 130,000 psi tensile strength and 65,000 psi shear strength, suitable for heavy-duty and high-stress applications.
• Easy installation and removal thanks to the 5/64" hex socket drive and knurled head, providing enhanced grip and torque transmission.
• Reliable shoulder positioning with controlled diameter and length tolerances, offering consistent spacing and support for rotating components.
• Broad compatibility with UNC coarse threading, facilitating quick assembly and interchangeability in standard industrial systems.
• Environmental and regulatory compliance with RoHS 3 and REACH, ensuring safe use in global markets and sensitive industries.

Professional Applications & Engineering Value

This 17-4 PH Stainless Steel Shoulder Screw is engineered to address critical challenges in precision machinery, automation, and aerospace assemblies. The 4-40 UNC coarse thread and Class 3A fit ensure tight, vibration-resistant connections, reducing the risk of loosening under dynamic loads. The knurled head texture and socket drive design allow for efficient tool engagement, speeding up installation in confined spaces. With a Rockwell C28 hardness and high tensile strength, it withstands repetitive stress and corrosive conditions, making it ideal for pivots, guides, and bearing supports in industrial equipment. Its precision shoulder maintains exact component alignment, enhancing overall system accuracy and longevity.

Specification Summary & Compliance

This shoulder screw adheres to UNC thread standards with a Class 3A fit for precise thread engagement. Dimensions include a head diameter of 0.25", shoulder diameter of 1/8" (tolerance: -0.004" to -0.002"), and shoulder length of 1/8" (tolerance: -0.005" to 0.005"). It is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances and suitable for international engineering projects.