S-92245A639 3/8"-16 x 3" FF-S-85, MS35307-370 Mil. Spec. 18-8 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to passivated 18-8 stainless steel construction, ideal for harsh environments and extended service life.
• High tensile strength of 70,000 PSI ensures reliable performance under heavy loads and in demanding industrial applications.
• External hex drive and hex head design allows for easy installation and high torque application with standard tools.
• Class 2A thread fit and UNC coarse thread provide consistent engagement and reliable fastening in a variety of materials.
• Partially threaded shank offers improved clamping force and prevents loosening in vibration-prone assemblies.
• Compliance with Fed. Spec. FF-S-85 (MS35307-370), RoHS 3, and REACH guarantees adherence to strict industrial and environmental standards.
• Rockwell B74 hardness ensures excellent durability and resistance to wear during repeated use.

Professional Applications & Engineering Value

This 3/8"-16 UNC hex head screw is engineered to solve critical fastening challenges in heavy machinery, construction, and marine equipment where corrosion resistance and high tensile strength are paramount. The passivated 18-8 stainless steel material effectively combats rust and chemical exposure, while the coarse UNC thread and Class 2A thread fit ensure quick assembly and secure holding power in coarse-grained materials. Its partially threaded design concentrates clamping force precisely where needed, reducing the risk of joint failure under vibration and dynamic loads. Ideal for structural frameworks, industrial assemblies, and outdoor installations, this screw delivers consistent performance and long-term reliability, meeting the rigorous demands of B2B procurement for durable industrial fasteners.

Specification Summary & Compliance

This screw features a 3/8"-16 UNC thread with Class 2A thread fit and coarse thread spacing, ensuring precise dimensional accuracy and compatibility with standard components. It is manufactured in compliance with Fed. Spec. FF-S-85 (MS35307-370) and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming its suitability for global industrial use without hazardous substances.