S-92196A559 1/4"-20 x 4 1/2" ASME B18.3 18-8 Stainless Steel Socket Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh environments and extended service life.
• High tensile strength of 70,000 psi ensures reliable performance under significant load and stress in demanding applications.
• Precise Class 3A thread fit guarantees secure, vibration-resistant fastening and reduces the risk of assembly failure.
• Hex socket drive design allows for high torque application and easy installation in confined spaces.
• Coarse UNC 1/4"-20 threads provide rapid assembly and disassembly, saving valuable time in production and maintenance.
• Partial threading offers versatility for applications requiring a non-threaded shoulder for precise component positioning.
• Full compliance with ASME B18.3, RoHS 3, and REACH ensures product quality, safety, and environmental responsibility for global supply chains.

Professional Applications & Engineering Value

This 18-8 Stainless Steel Socket Head Cap Screw is engineered to solve critical challenges in industrial assembly and machinery. Its high tensile strength (70,000 psi) and Rockwell B70 hardness provide exceptional resistance to shear and tensile forces, preventing fastener failure in high-stress environments like heavy equipment, automotive subsystems, and precision tooling. The UNC coarse thread and Class 3A fit ensure a tight, reliable connection that resists loosening under vibration, a common issue in dynamic systems. The hex socket drive is ideal for space-constrained applications, allowing for secure fastening where standard wrenches cannot reach. Manufactured from corrosion-resistant stainless steel, it delivers long-term durability in humid or chemically aggressive settings, reducing maintenance frequency and total cost of ownership for B2B operations.

Specification Summary & Compliance

This socket head cap screw features a 1/4"-20 UNC coarse thread with a precise Class 3A thread fit for superior dimensional accuracy. It is manufactured in accordance with the ASME B18.3 standard, ensuring consistent quality and interchangeability. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting stringent international regulations for hazardous substance restrictions and chemical safety.