S-90696A197 5/16"-18 x 9/16" 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 long-term reliability.
• Superior load-bearing capacity thanks to a 70,000 PSI tensile strength, ensuring secure fastening under high stress.
• Precise thread engagement and reliability with Class 3A thread fit, minimizing the risk of cross-threading and loosening.
• High durability and wear resistance from Rockwell B70 hardness, maintaining performance in repetitive or high-torque applications.
• Easy installation and removal using a standard 1/4" hex drive, providing a secure grip and reducing tool slippage.
• Broad industrial compatibility with UNC coarse threads and right-hand direction, suitable for a wide range of assembly needs.
• Compliance with major standards including ASME B18.3, RoHS 3, and REACH, ensuring safety and environmental responsibility.

Professional Applications & Engineering Value

This 18-8 stainless steel socket head cap screw is engineered to address critical challenges in industrial and mechanical assemblies. Its corrosion-resistant material prevents degradation in moist or chemical-exposed settings, while the Class 3A thread fit and UNC coarse threading deliver consistent, vibration-resistant connections that reduce maintenance downtime. The fully threaded design and high tensile strength make it ideal for heavy-duty applications like machinery, automotive components, and structural frameworks, where reliability and longevity are paramount. By meeting ASME B18.3 specifications, it ensures dimensional accuracy and interoperability, supporting efficient B2B procurement and integration into complex systems.

Specification Summary & Compliance

This fastener adheres to precise dimensional standards, including a Class 3A thread fit for tight tolerances and UNC coarse thread spacing (5/16"-18). It is manufactured in compliance with ASME B18.3 for consistent quality and performance. Additionally, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and environmentally responsible for global industrial use.