S-92703A133 1/4"-20 x 3" ASME B18.3 Stainless Steel Torx Flat Head Screws

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with 18-8 Stainless Steel and passivated finish for long-term reliability in harsh environments.
• Superior torque transmission and reduced cam-out via the Torx Plus IP30 drive, ensuring efficient installation and minimizing tool slippage.
• High mechanical strength offering 60,000 psi tensile strength and Rockwell B70 hardness for demanding industrial applications.
• Precise thread engagement with Class 3A fit and UNC coarse thread, providing secure fastening and vibration resistance.
• Flush mounting capability due to the standard flat head with 82° countersink angle, ideal for applications requiring a smooth surface finish.
• Reliable partial threading on a 3" length, allowing for controlled grip and ease of adjustment in assembled structures.
• Compliance with major industry standards including ASME B18.3, RoHS 3, and REACH, ensuring safety and environmental responsibility.

Professional Applications & Engineering Value

Engineered for industrial and heavy-duty applications, these 1/4-20 UNC Flat Head Torx Plus Screws address common fastening challenges such as corrosion, high torque demands, and precise assembly requirements. The 18-8 Stainless Steel material combined with a passivated finish provides excellent resistance to rust and chemical exposure, making them suitable for machinery, automotive, and outdoor equipment. The Torx Plus drive (IP30) enhances torque transfer, reducing the risk of drive damage and improving installation efficiency in tight spaces. With a Class 3A thread fit and coarse threading, these screws ensure quick, secure fastening in materials like metal and plastic, minimizing loosening under vibration. Ideal for applications requiring flush mounting and reliable performance in corrosive or high-stress environments, they deliver consistent engineering value by combining durability, precision, and regulatory compliance.

Specification Summary & Compliance

This screw features precise thread dimensions with Class 3A fit and UNC coarse threads for accurate engagement. It adheres to ASME B18.3 manufacturing standards, ensuring dimensional consistency and performance. Additionally, it is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety for use in various industries without hazardous substances.