S-93810A140 1/4"-20 x 1 1/4" ASME B18.2.1 Super-Corrosion-Resistant High-Strength Bumax 88 Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 110,000 psi ensures reliable performance in high-stress industrial applications, reducing the risk of fastener failure.
• Superior corrosion resistance provided by Bumax 88 Stainless Steel material, extending service life in harsh environments and minimizing maintenance needs.
• Coarse UNC threading enables faster installation and better debris resistance, ideal for quick assembly and disassembly in rugged conditions.
• Class 2A thread fit offers consistent, reliable engagement with standard nuts and tapped holes, ensuring secure fastening without binding.
• External hex drive design allows for high torque application with common tools, providing a secure grip and reducing stripping risks during installation.
• Partially threaded shank provides unthreaded bearing surface for improved clamping force distribution and vibration resistance in structural joints.
• Compliance with ASME B18.2.1, RoHS 3, and REACH standards guarantees quality assurance and environmental responsibility for global industrial projects.

Professional Applications & Engineering Value

Engineered for demanding industrial environments, these Bumax 88 Stainless Steel hex head screws deliver exceptional performance where corrosion resistance and structural integrity are critical. The 1/4"-20 UNC coarse thread configuration provides superior engagement in various materials while resisting cross-threading during installation. The external hex drive accommodates standard wrenches for high-torque applications in confined spaces. These partially threaded screws concentrate clamping force precisely where needed, making them ideal for machinery assembly, structural frameworks, and equipment maintenance where vibration resistance and long-term reliability are essential. The combination of 110,000 psi tensile strength and premium stainless steel material ensures these fasteners withstand extreme operational stresses while maintaining corrosion resistance in chemical processing, marine, and outdoor industrial applications.

Specification Summary & Compliance

These hex head screws feature precision Class 2A thread fit with 1/4"-20 UNC coarse threading and 1 1/4" length with 3/4" minimum thread length. Manufactured to ASME B18.2.1 specifications for dimensional accuracy and performance reliability. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in global industrial markets.