S-98164A459 10-32 x 5/16" ASME B18.3 Stainless Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance in harsh environments thanks to 316 stainless steel construction with passivated finish
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for reliable, long-lasting performance
• Precise, secure fastening ensured by Class 3A fine UNF threading, minimizing the risk of loosening under vibration
• Easy and efficient installation with a 1/8" hex drive, providing a positive grip and reducing assembly time
• Versatile fully threaded design offering consistent holding power along the entire 5/16" length
• Compliance with major industry standards including ASME B18.3, ensuring quality and interchangeability
• Environmentally responsible manufacturing with RoHS 3 and REACH compliance, meeting global regulatory requirements

Professional Applications & Engineering Value

This 316 stainless steel rounded head screw is engineered to solve critical challenges in demanding industrial settings. Its passivated finish significantly enhances corrosion resistance, making it ideal for applications exposed to chemicals, moisture, and marine environments. The combination of Class 3A UNF fine threading and a hex drive ensures a precise, high-clamp force fit that resists vibrational loosening in machinery, automotive assemblies, and electronic enclosures. The fully threaded design and high tensile strength provide uniform stress distribution and reliable performance in high-stress applications, reducing maintenance needs and downtime.

Specification Summary & Compliance

This fastener features a 10-32 UNF fine thread with a Class 3A fit for superior dimensional accuracy and thread engagement. It is manufactured in compliance with the ASME B18.3 standard and is fully RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, ensuring adherence to strict environmental and safety regulations.