S-92245A753 1/2"-20 x 1 1/4" FF-S-85, MS35308-411 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 industrial environments
• Exceptional tensile strength rated at 70,000 PSI for reliable, high-load fastening applications
• Precise Class 2A thread fit ensures smooth assembly and consistent clamping force in demanding applications
• Full threading design provides maximum grip and holding power along the entire screw length
• Durable Rockwell B74 hardness maintains structural integrity and resists wear during installation and use
• External hex drive with 3/4" head width allows for high-torque installation using standard tools
• Compliance with Fed. Spec. FF-S-85 (MS35308-411) guarantees consistent quality and performance in government and industrial contracts

Professional Applications & Engineering Value

This 1/2"-20 UNF hex head screw delivers exceptional engineering value through its passivated 18-8 stainless steel composition and fine thread spacing, specifically engineered to solve critical industrial fastening challenges. The combination of 70,000 PSI tensile strength and Rockwell B74 hardness ensures reliable performance in high-vibration environments where fastener failure is not an option. The fully threaded design maximizes surface contact for superior load distribution, while the external hex drive accommodates high-torque applications in machinery, structural assemblies, and heavy equipment. These industrial hex screws maintain dimensional stability under stress, preventing loosening and maintaining joint integrity in critical applications where safety and reliability are paramount.

Specification Summary & Compliance

This 1/2"-20 UNF hex head screw features precise Class 2A thread fit with fine thread spacing and right-hand thread direction, manufactured to exacting standards. The fastener complies with Fed. Spec. FF-S-85 (MS35308-411) for consistent quality assurance and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance standards, ensuring suitability for regulated industrial applications worldwide.