S-92240A113 1/4"-28 x 1 3/4" ASME B18.2.1 18-8 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh environments and reducing maintenance costs.
• High tensile strength of 80,000 psi ensures reliable performance under significant load and stress in demanding applications.
• Precise Class 2A thread fit guarantees smooth assembly, reduces cross-threading risks, and improves installation efficiency.
• External hex drive and hex head design allows for high-torque application with standard tools, speeding up assembly and disassembly.
• Fully threaded shank provides maximum grip and clamping force along the entire length for secure fastening.
• Fine UNF thread spacing offers better adjustment precision and vibration resistance compared to coarse threads.
• Compliance with RoHS 3 and REACH ensures environmental safety and meets global regulatory standards for industrial use.

Professional Applications & Engineering Value

This 1/4"-28 UNF hex head screw is engineered to solve critical fastening challenges in industrial settings. The 18-8 Stainless Steel material provides excellent resistance to rust and corrosion, making it suitable for outdoor, marine, or chemical-exposed applications where durability is paramount. Its fine thread spacing and Class 2A thread fit ensure tight, secure connections that resist loosening under vibration, common in machinery, automotive, and aerospace assemblies. The external hex drive facilitates easy installation with common wrenches, reducing labor time and improving workflow efficiency. With a high tensile strength of 80,000 psi and Rockwell B70 hardness, it maintains integrity in high-stress environments, offering long-term reliability and reducing the need for frequent replacements.

Specification Summary & Compliance

This screw features a 1/4"-28 UNF fine thread with Class 2A thread fit for precise dimensional accuracy, ensuring consistent performance. It is manufactured in compliance with ASME B18.2.1 standards, guaranteeing uniformity and reliability. Additionally, the product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, adhering to environmental and safety regulations for industrial fasteners.