S-92245A947 5/16"-24 x 2 1/4" FF-S-85, MS35308-341 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
• Precision Class 2A thread fit guarantees smooth assembly and secure fastening in critical applications
• External hex drive design provides excellent torque transmission and easy installation with standard tools
• Partially threaded shank allows for controlled clamping force and reduced risk of thread damage
• Compliance with Fed. Spec. FF-S-85 (MS35308-341) ensures consistent quality and interchangeability
• RoHS 3 and REACH compliant for environmentally responsible and safe use in regulated industries

Professional Applications & Engineering Value

This 5/16"-24 UNF hex head screw delivers exceptional engineering value in demanding applications where corrosion resistance and mechanical reliability are paramount. The passivated 18-8 stainless steel material provides excellent protection against oxidation and chemical exposure, making it ideal for marine, chemical processing, and outdoor equipment. The fine thread spacing and Class 2A thread fit ensure precise engagement in tapped holes, reducing the risk of cross-threading and providing consistent clamping force. With its partially threaded design, this screw offers optimal unthreaded shank length for shear resistance, while the external hex drive enables high-torque installation in confined spaces. These features make it a trusted solution for machinery assembly, structural frameworks, and automotive components requiring 70,000 PSI tensile strength and long-term durability.

Specification Summary & Compliance

This hex head screw features a 5/16"-24 UNF fine thread with Class 2A thread fit for standard tolerance applications. It meets Fed. Spec. FF-S-85 (MS35308-341) for dimensional consistency and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for global industrial use.