S-92323A551 3/8"-16 x 5/8" IFI 111, SAE J429 Medium-Strength Grade 5 Steel Serrated-Flange Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capability with Grade 5 classification and 110,000 PSI tensile strength for demanding industrial applications
• Superior corrosion resistance through zinc-plated steel construction, extending service life in harsh environments
• Secure anti-rotation locking provided by serrated flange design that prevents loosening under vibration
• Optimized installation efficiency with external hex drive and coarse UNC threads for faster assembly
• Reliable thread engagement ensured by Class 2A thread fit and full threading along the entire 5/8" length
• Enhanced surface durability with Rockwell C22 hardness for resistance to wear and deformation
• Regulatory compliance assurance meeting IFI 111/SAE J429 standards with RoHS 3 and REACH environmental directives

Professional Applications & Engineering Value

Engineered for heavy-duty fastening applications, this Grade 5 hex head screw delivers critical performance where vibration resistance and structural integrity are paramount. The zinc-plated steel construction provides essential corrosion protection for outdoor equipment, machinery assemblies, and structural frameworks exposed to environmental elements. The combination of UNC coarse threading and external hex drive enables rapid installation in steel-to-steel connections, while the serrated locking flange eliminates the need for additional lock washers in high-vibration environments. This fully threaded fastener maintains consistent clamping force across its entire 5/8" length, making it ideal for automotive components, construction equipment, and industrial machinery where 110,000 PSI tensile strength ensures joint reliability under extreme loads.

Specification Summary & Compliance

This 3/8"-16 hex head screw features precision Class 2A thread fit with UNC coarse thread spacing for optimal engagement in various materials. Manufacturing conforms to IFI 111 specifications where identified as SAE J429 standard for Grade 5 fasteners. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring restricted substance adherence for global industrial applications. The external hex drive configuration with 13/16" flange diameter provides superior torque transmission during installation.