S-92196A090 2-56 x 1 3/8" ASME B18.3 18-8 Stainless Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance thanks to 18-8 Stainless Steel construction, ideal for harsh environments
• High tensile strength of 70,000 psi ensures reliable, long-lasting fastening under significant loads
• Superior wear resistance provided by Rockwell B70 hardness, extending service life
• Precise Class 3A thread fit guarantees secure, vibration-resistant assemblies with minimal play
• Robust hex drive (5/64") allows for high torque application and easy installation in confined spaces
• Versatile 1-3/8" partially threaded design offers optimal grip length for a wide range of material thicknesses
• Full compliance with ASME B18.3, RoHS 3, and REACH ensures material quality and environmental safety for global projects

Professional Applications & Engineering Value

This Socket Head Cap Screw with a 2-56 UNC coarse thread is engineered to solve critical fastening challenges in industrial settings. The 18-8 Stainless Steel material provides excellent resistance to rust and oxidation, making it suitable for applications in moist or chemically aggressive environments, such as marine equipment, food processing machinery, and outdoor structures. The coarse thread design enables quicker installation and reduces the risk of cross-threading in soft materials or blind holes. Combined with a Class 3A thread fit, it delivers a tight, secure connection that minimizes loosening from vibration, a common issue in dynamic machinery and automotive assemblies. The partially threaded shank ensures that the unthreaded portion bears against the material, providing superior clamp load without damaging threads, which is essential for precision equipment and repeated disassembly.

Specification Summary & Compliance

This screw adheres to precise dimensional standards, featuring a 2-56 UNC coarse thread with a Class 3A thread fit for high precision and consistency. It is manufactured in compliance with ASME B18.3 specifications, ensuring interchangeability and reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from hazardous substances and safe for use in various industrial and consumer applications globally.