S-94414A364 1/4"-20 x 1 1/2" 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 Torx Plus IP30 drive, ensuring reliable installation in high-stress industrial environments.
• Superior corrosion resistance provided by the black-oxide finish on alloy steel, extending the fastener's service life in demanding applications.
• Exceptional mechanical strength with a tensile strength of 140,000 psi and Rockwell C39 hardness, preventing stripping and shear failure under heavy loads.
• Precise and secure thread engagement due to the Class 3A thread fit for UNC 1/4"-20 coarse threads, minimizing the risk of loosening in vibration-prone settings.
• Optimal flush mounting and material displacement with the standard 82° countersink angle and flat head design, ideal for streamlined assemblies.
• Full-threaded design for maximum grip length, offering versatile fastening depth and holding power across various material thicknesses.
• Compliance with major industry standards including ASME B18.3, ensuring consistent quality, dimensional accuracy, and interoperability.

Professional Applications & Engineering Value

Engineered for robust performance, these 1/4-20 UNC flat head screws with Torx Plus drive address critical industrial fastening challenges. The black-oxide alloy steel construction combats corrosion effectively, making these screws suitable for machinery, automotive, and outdoor equipment where exposure to moisture and chemicals is common. The Class 3A thread fit and coarse threading provide quick assembly and high resistance to vibrational loosening, essential for dynamic load applications. With a 140,000 psi tensile strength, they ensure structural integrity in heavy-duty frameworks, while the flat head and 82° countersink enable seamless, low-profile installations without compromising on strength or compliance with ASME B18.3 specifications.

Specification Summary & Compliance

This product adheres to precise dimensional standards, including Class 3A thread fit for UNC 1/4"-20 coarse threads, ensuring tight tolerances and reliable performance. It meets ASME B18.3 specifications for consistency and safety. Additionally, the screw is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, confirming its adherence to environmental and health regulations without the use of hazardous substances.