S-94414A624 3/8"-16 x 1" ASME B18.3, ASTM F835 Alloy Steel Torx Flat Head Screws

Key Features & Benefits at a Glance

• Enhanced torque transmission and reduced cam-out with the T45 Torx Plus drive, ensuring secure fastening in high-stress applications.
• Superior corrosion resistance provided by the black-oxide finish on alloy steel, extending service life in demanding industrial environments.
• Exceptional tensile strength of 140,000 psi and Rockwell C39 hardness for reliable performance under heavy loads and vibration.
• Maximum holding power and thread engagement due to the fully threaded design, ideal for critical assemblies.
• Precise and secure thread fit with Class 3A tolerance, minimizing the risk of loosening and ensuring consistent clamping force.
• Streamlined flush mounting with an 82° countersink angle and standard flat head profile for a clean, professional finish.
• Broad compliance with industry standards including ASME B18.3, RoHS 3, and REACH, guaranteeing quality and environmental safety.

Professional Applications & Engineering Value

This 3/8"-16 UNC flat head screw is engineered to address common industrial challenges such as fastener failure under high vibration and corrosive conditions. The black-oxide alloy steel construction offers excellent durability and resistance to rust, making it suitable for machinery, automotive, and structural applications where exposure to moisture or chemicals is a concern. The T45 Torx Plus drive enables higher torque application compared to standard drives, reducing the risk of tool slippage and damage to the screw head. Combined with a Class 3A thread fit and full threading, it ensures tight, reliable connections that maintain integrity in dynamic loads. These features make it an ideal choice for heavy-duty fastening in manufacturing, construction, and equipment assembly, where precision and long-term performance are critical.

Specification Summary & Compliance

This screw features a 3/8"-16 UNC coarse thread with a Class 3A thread fit for precise dimensional accuracy and secure fastening. It is manufactured in accordance with ASME B18.3 specifications and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and safe for various industrial uses. The product meets all stated standards for material, threading, and drive style, providing reliability and consistency in professional applications.