S-94792A326 4-40 x 1/4" ASME B18.6.3 Stainless Steel Truss Head Phillips Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance thanks to 316 stainless steel construction and passivated finish, ideal for harsh environments
• High tensile strength of 100,000 PSI ensures reliable performance under heavy loads and vibration
• Wide truss head design provides superior load distribution and reduces surface damage
• Class 2A thread fit with 4-40 UNC coarse spacing enables quick assembly and secure fastening
• Full threading along the 1/4" length offers maximum grip and adjustment flexibility
• Phillips No. 1 drive allows for efficient installation with standard tools
• Compliance with ASME B18.6.3, RoHS 3, and REACH guarantees quality and environmental safety

Professional Applications & Engineering Value

This 4-40 UNC rounded truss head screw in 316 stainless steel is engineered to address critical industrial challenges where corrosion resistance and mechanical strength are paramount. The passivated finish significantly enhances durability in corrosive environments such as chemical processing, marine applications, and outdoor equipment. Its wide truss head distributes clamping force effectively, preventing surface damage on softer materials while the coarse UNC threading ensures rapid installation and reliable hold in various substrates. With a Rockwell B100 hardness and 100,000 PSI tensile strength, it withstands dynamic loads and vibrations, making it ideal for machinery assembly, electronic enclosures, and structural frameworks where long-term reliability is essential.

Specification Summary & Compliance

This screw features precise Class 2A thread fit with 4-40 UNC coarse thread specifications, ensuring dimensional accuracy per industry standards. It is manufactured in compliance with ASME B18.6.3 for mechanical and dimensional requirements, and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations for environmental safety and restricted substances.