S-94414A362 1/4"-20 x 5/8" ASME B18.3, ASTM F835 Alloy Steel Torx Flat Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with Black-Oxide Alloy Steel construction, ideal for harsh industrial environments.
• Superior torque transmission and reduced cam-out thanks to the Torx Plus IP30 drive, ensuring reliable fastening and tool longevity.
• High tensile strength of 140,000 psi and Rockwell C39 hardness for dependable performance in heavy-duty applications.
• Precise and secure thread engagement with UNC coarse threads and Class 3A fit, minimizing the risk of stripping.
• Streamlined, low-profile installation with a standard 82° flat head, allowing for flush mounting in various materials.
• Full compliance with ASME B18.3 standards, ensuring consistent quality, dimensional accuracy, and interchangeability.
• Environmentally responsible manufacturing that meets RoHS 3 and REACH regulations, supporting your supply chain sustainability goals.

Professional Applications & Engineering Value

This Black-Oxide Alloy Steel flat head screw is engineered to address common industrial challenges such as vibration loosening and corrosion in demanding environments. The Torx Plus IP30 drive provides excellent torque transfer, reducing wear on tools and preventing damage to the fastener head during high-torque applications. Its UNC coarse thread and Class 3A thread fit ensure quick assembly and a secure hold in materials like metal and hardened plastics, making it ideal for machinery, automotive assemblies, and structural frameworks where reliability is critical. The combination of high tensile strength and a protective black-oxide finish delivers long-term durability, minimizing maintenance needs and downtime in continuous operation settings.

Specification Summary & Compliance

This fastener features a 1/4"-20 UNC thread with Class 3A fit for precise dimensional accuracy, and is fully threaded for consistent holding power. It complies with ASME B18.3 specifications (ASTM F835) for dimensional and mechanical requirements. The product is also verified to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring it meets stringent environmental and safety standards for industrial use.