S-90393A125 3/8"-16 x 2" IFI 111, SAE J429 Medium-Strength Grade 5 Steel Serrated-Flange Hex Head Screws

Key Features & Benefits at a Glance

• Superior vibration resistance with serrated locking flange design that prevents loosening under dynamic loads
• Exceptional mechanical strength with Grade 5 classification and 120,000 PSI tensile strength for heavy-duty applications
• Enhanced durability with Rockwell C22 hardness providing excellent wear resistance and longevity
• Reliable thread engagement with Class 2A thread fit ensuring consistent performance and easy assembly
• Increased bearing surface with 13/16" flange diameter distributing load more effectively
• Versatile installation with external hex drive and fully threaded design for maximum fastening flexibility
• Environmental compliance meeting RoHS 3 and REACH standards for safe use in regulated industries

Professional Applications & Engineering Value

This Grade 5 hex head screw delivers exceptional engineering value in demanding industrial environments where vibration resistance and mechanical integrity are critical. The serrated locking flange provides superior anti-loosening performance, making it ideal for machinery, equipment manufacturing, and structural applications subject to dynamic loads. The 3/8"-16 UNC coarse thread with Class 2A fit ensures reliable engagement in various materials while the fully threaded design offers maximum grip length. With 120,000 PSI tensile strength and Rockwell C22 hardness, this fastener withstands extreme mechanical stresses in heavy-duty applications, from construction equipment to industrial machinery assemblies where failure is not an option.

Specification Summary & Compliance

This hex head screw features precise Class 2A thread fit with UNC coarse threading (3/8"-16) and meets SAE J429 specifications for Grade 5 fasteners. Manufacturing complies with IFI 111 standards with full compliance to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The inch system measurement ensures compatibility with North American industrial standards while the external hex drive and flange design provide optimal installation and performance characteristics.