S-93810A640 1/2"-13 x 4" ASME B18.2.1 Super-Corrosion-Resistant High-Strength Bumax 88 Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional 110,000 psi tensile strength ensures reliable performance in high-stress and heavy-duty applications, reducing the risk of fastener failure.
• Superior corrosion resistance from Bumax 88 stainless steel extends service life in harsh environments, minimizing maintenance and replacement costs.
• UNC coarse threading with Class 2A fit provides quick assembly and secure fastening, ideal for industrial settings where speed and reliability are critical.
• Partially threaded design and 4" length offer versatility for applications requiring precise clamping and unthreaded shank sections.
• External hex drive and 3/4" head width allow for high torque application with standard tools, ensuring easy installation and removal.
• Compliance with ASME B18.2.1 standards guarantees dimensional accuracy and interchangeability, supporting quality assurance in engineering projects.
• RoHS 3 and REACH compliance ensures environmental and safety adherence, making it suitable for regulated industries and global supply chains.

Professional Applications & Engineering Value

This Bumax 88 stainless steel hex head screw is engineered to address common industrial challenges such as corrosion-induced degradation and mechanical failure under heavy loads. Its high tensile strength of 110,000 psi and coarse UNC threading provide robust fastening in structural assemblies, machinery, and equipment where vibration resistance and durability are paramount. The external hex drive facilitates efficient installation with standard wrenches, reducing labor time in maintenance and production lines. Ideal for sectors like construction, marine, and chemical processing, this screw offers long-term reliability by combining premium material properties with precise ASME B18.2.1 specifications, ensuring consistent performance in demanding environments.

Specification Summary & Compliance

This screw features a 1/2"-13 UNC thread with Class 2A fit, ensuring precise dimensional tolerance and smooth assembly. It is manufactured in accordance with ASME B18.2.1 standards for hex head screws and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious and safety-focused applications. The inch system measurements and partial threading support consistent performance across compatible industrial fastening systems.