S-92245A813 5/8"-11 x 2 3/4" FF-S-85, MS35307-467 Mil. Spec. 18-8 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with Passivated 18-8 Stainless Steel construction, ensuring long-term durability in harsh environments.
• High tensile strength of 70,000 psi and Rockwell B74 hardness for reliable performance in heavy-duty applications.
• Precise Class 2A thread fit with UNC coarse threading for easy installation and secure fastening.
• Partially threaded design provides optimal grip and clamping force where needed.
• External hex drive and hex head allow for straightforward installation with standard tools.
• Compliance with Fed. Spec. FF-S-85 (MS35307-467) ensures consistent quality and interchangeability.
• RoHS 3 and REACH compliant for environmentally responsible and safe usage in regulated industries.

Professional Applications & Engineering Value

This 5/8"-11 UNC Hex Head Screw is engineered from Passivated 18-8 Stainless Steel to combat corrosion in demanding environments such as marine, chemical processing, and outdoor infrastructure. Its coarse thread and Class 2A fit reduce cross-threading risks and speed up assembly, while the partially threaded shank concentrates clamping force for enhanced joint integrity. With a 70,000 psi tensile strength and Rockwell B74 hardness, it withstands high stress and vibration, making it ideal for heavy machinery, structural frameworks, and industrial equipment where reliability is critical. The external hex drive ensures compatibility with common wrenches, streamlining maintenance and reducing downtime.

Specification Summary & Compliance

This screw features a 5/8"-11 UNC coarse thread with Class 2A thread fit for precise tolerances, a length of 2 3/4", and a partially threaded design. It meets Fed. Spec. FF-S-85 (MS35307-467) for dimensional consistency and performance. Additionally, it is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) standards, ensuring environmental safety and regulatory adherence.