S-92245A555 1/4"-20 x 3" FF-S-85, MS35307-318 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, ideal for harsh industrial environments.
• High tensile strength of 70,000 psi ensures reliable performance under heavy loads and vibration.
• External hex drive and hex head design provides secure, easy installation with standard tools.
• Partially threaded shank allows for precise clamping force and reduced thread wear in assemblies.
• UNC coarse threading with Class 2A fit offers quick assembly and excellent resistance to loosening.
• Compliance with Fed. Spec. FF-S-85 (MS35307-318) guarantees consistent quality and interchangeability.
• Meets RoHS 3 and REACH environmental standards for safe, sustainable use in regulated industries.

Professional Applications & Engineering Value

This 1/4"-20 x 3" hex head screw is engineered to address common industrial challenges, such as corrosion and mechanical stress. Crafted from passivated 18-8 stainless steel, it provides exceptional durability in demanding settings like machinery, construction, and marine applications. The UNC coarse thread and partially threaded design enhance grip and distribute load efficiently, minimizing the risk of stripping or fatigue. With a Rockwell B74 hardness and 70,000 psi tensile strength, it ensures long-term reliability in heavy-duty fastener systems, reducing maintenance needs and downtime.

Specification Summary & Compliance

This screw adheres to precise inch system dimensions, including a Class 2A thread fit for consistent engagement. It meets Fed. Spec. FF-S-85 (MS35307-318) for manufacturing standards and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material integrity.