S-92240A926 1"-8 x 4" ASME B18.2.1 18-8 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from 18-8 Stainless Steel construction, ideal for harsh environments and reducing long-term maintenance costs.
• High tensile strength of 80,000 psi ensures reliable performance under significant load and stress in demanding applications.
• Coarse UNC thread design provides faster installation and superior grip in a wide range of materials, including wood and soft metals.
• Class 2A thread fit offers excellent interchangeability and ease of assembly without sacrificing holding power.
• Full threading along the 4" length allows for maximum adjustability and secure fastening depth in various material thicknesses.
• External hex drive and hex head enable high-torque installation with common tools, speeding up assembly lines.
• Compliance with major industry and environmental standards (ASME B18.2.1, RoHS 3, REACH) guarantees quality, safety, and regulatory acceptance for global projects.

Professional Applications & Engineering Value

This 1"-8 UNC hex head screw is engineered to solve critical challenges in industrial assembly and construction. The 18-8 Stainless Steel material provides excellent resistance to rust and corrosion, making it a durable choice for outdoor structures, marine equipment, and chemical processing facilities where environmental factors degrade lesser fasteners. The coarse thread and Class 2A thread fit ensure quick, reliable engagement, reducing installation time and preventing cross-threading in high-volume production settings. With an 80,000 psi tensile strength and Rockwell B70 hardness, it maintains integrity under vibration and heavy loads, common in machinery, heavy-duty framing, and transportation infrastructure. The fully threaded design offers versatile clamping across different material depths, enhancing design flexibility for engineers and contractors who require a dependable, long-lasting heavy-duty fastener.

Specification Summary & Compliance

This screw features a 1"-8 UNC coarse thread with a Class 2A thread fit for standard tolerance and easy assembly. It is manufactured to meet ASME B18.2.1 specifications, ensuring dimensional accuracy and performance reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming it is free of hazardous substances and safe for use in various industrial and international markets.