S-90332A111 4-40 x 1/4" High-Profile Socket Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• Exceptional holding power from fully threaded design and 70,000 psi tensile strength for reliable fastening
• Precise thread engagement with Class 3A fit, ensuring tight tolerances and reduced vibration loosening
• High-strength socket head with hex drive design for maximum torque transmission and strip resistance
• Enhanced durability with Rockwell B84 hardness, maintaining structural integrity under heavy loads
• Wide compatibility with UNC coarse threading and right-hand direction for standard industrial applications
• Regulatory compliance meeting RoHS 3 and REACH standards for safe, environmentally conscious usage

Professional Applications & Engineering Value

These 4-40 UNC socket head cap screws deliver critical performance in precision machinery, automotive assemblies, and electronic enclosures where space constraints demand compact hex drive fasteners. The 18-8 stainless steel material provides excellent resistance to oxidation and chemical exposure, while the Class 3A thread fit ensures minimal backlash in high-vibration environments. Engineered with coarse threading for rapid installation and fully threaded design for uniform stress distribution, these screws prevent joint failure in dynamic load conditions. Their 70,000 psi tensile strength makes them suitable for structural applications requiring reliable clamping force without compromising corrosion protection.

Specification Summary & Compliance

This socket head cap screw features 4-40 UNC coarse threads with Class 3A precision tolerance for superior fit. Manufacturing adheres to standard inch dimensions including 1/4" length and 3/32" hex drive. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material traceability for industrial procurement.