S-90008A731 1/4"-20 x 3/4" ASME B18.3, ASTM F837 18-8 Stainless Steel Socket Head Screws

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with silver plating over 18-8 stainless steel, ideal for harsh environments and preventing galvanic corrosion
• Superior tensile strength of 70,000 psi ensures reliable performance under high-stress applications and reduces failure risk
• Precise Class 3A thread fit provides tighter tolerances for secure fastening and improved vibration resistance in assemblies
• Durable Rockwell B70 hardness maintains thread integrity and head profile during installation and throughout the product lifecycle
• Standard hex socket drive with 3/16" key size allows for easy installation in confined spaces and high-torque applications
• Fully threaded design offers consistent engagement along the entire 3/4" length for maximum grip and load distribution
• Compliance with major standards including ASME B18.3 and ASTM F837 ensures interchangeability and reliability in industrial settings

Professional Applications & Engineering Value

Engineered for demanding industrial applications, this silver plated 18-8 stainless steel socket head cap screw combines material excellence with precision manufacturing. The UNC coarse thread with Class 3A fit ensures rapid assembly and superior vibration resistance in machinery, automotive, and aerospace components. The corrosion-resistant silver plating provides an additional protective layer, making it suitable for electrical contacts and marine environments where oxidation prevention is critical. With its hex drive socket head design, it delivers reliable performance in high-torque applications while maintaining a low profile for space-constrained assemblies. This fastener solves common engineering challenges like thread stripping, corrosion-induced failure, and installation inefficiency, making it an optimal choice for OEMs and maintenance professionals requiring durable, compliant socket head cap screws.

Specification Summary & Compliance

This 1/4"-20 x 3/4" socket head cap screw features UNC coarse threads with precise Class 3A thread fit for accurate engagement. Manufactured to ASME B18.3 and ASTM F837 specifications, it guarantees dimensional consistency and mechanical properties including 70,000 psi tensile strength and Rockwell B70 hardness. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory adherence for global industrial use.