S-92196A118 4-40 x 1 3/8" ASME B18.3 18-8 Stainless Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh environments and extended service life
• Superior tensile strength of 70,000 psi ensures reliable fastening under high-stress conditions and prevents mechanical failure
• Precise Class 3A thread fit guarantees secure, vibration-resistant assemblies with minimal risk of loosening
• Rockwell B70 hardness provides excellent wear resistance and maintains thread integrity during repeated installations
• Hex socket drive design allows for high torque application and easy installation in confined spaces
• Compliance with ASME B18.3 standards ensures dimensional accuracy and interchangeability for consistent performance
• RoHS 3 and REACH environmental compliance meets stringent regulatory requirements for safe use in various industries

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these socket head cap screws deliver outstanding performance where reliability is critical. The 18-8 Stainless Steel material offers excellent corrosion resistance, making them suitable for outdoor equipment, marine components, and chemical processing machinery. With their 4-40 UNC coarse thread and Class 3A thread fit, they provide superior grip in softer materials and resist vibration-induced loosening in dynamic assemblies. The hex drive and partially threaded design enable precise torque control and secure clamping in automated manufacturing, aerospace fixtures, and precision instrumentation. These screws solve common engineering challenges by combining high tensile strength with environmental compliance, ensuring long-term durability in corrosive or regulated environments.

Specification Summary & Compliance

This socket head cap screw features a 4-40 UNC coarse thread with Class 3A thread fit for precise dimensional tolerance. It is manufactured in compliance with ASME B18.3 specifications, ensuring consistent quality and interchangeability. The product meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, confirming its safety for use in regulated industrial sectors. Additional specifications include a 1 3/8" length, partially threaded rod type, and right-hand thread direction, providing reliable fastening solutions for professional applications.