S-90280A841 4-40 x 3/4" ASME B18.6.3 Steel Fillister Head Slotted Screws

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with zinc-plated steel construction, extending service life in industrial environments
• Superior tensile strength rated at 60,000 psi for reliable performance in high-stress applications
• Optimized drive engagement with slotted fillister head design for secure tool fitting and reduced cam-out risk
• Precision thread fit with Class 2A UNC coarse threads ensuring consistent fastening and vibration resistance
• Full-threaded design providing maximum grip length and load distribution across the entire 3/4" shaft
• High rounded head profile offering improved clearance and sleek installation in confined spaces
• Regulatory compliance meeting ASME B18.6.3, RoHS 3, and REACH standards for safe, global industrial use

Professional Applications & Engineering Value

These 4-40 UNC zinc-plated steel fillister head screws deliver critical reliability in precision assemblies where vibration resistance and corrosion protection are paramount. The combination of Rockwell B69 hardness and 60,000 psi tensile strength ensures durability in dynamic load conditions, while the slotted drive style accommodates standard tools for efficient maintenance. Ideal for electronics enclosures, machinery panels, and automotive components, the high rounded head profile minimizes protrusion risks. Fully compliant with ASME B18.6.3 specifications, these screws provide engineered solutions for OEMs and MRO professionals seeking consistent performance in coarse thread applications.

Specification Summary & Compliance

Manufactured to ASME B18.6.3 standards with Class 2A thread fit and UNC coarse threading for precise dimensional accuracy. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material restrictions adherence. Thread size: 4-40; Length: 3/4"; Fully threaded design.