S-92323A571 1/2"-13 x 1" 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 110,000 PSI tensile strength and Rockwell C22 hardness for reliable performance in demanding applications
• Superior corrosion resistance through zinc-plated steel construction, extending service life in harsh industrial environments
• Enhanced vibration resistance with serrated flange design that prevents loosening under dynamic loads
• Quick installation and removal with external hex drive and standard 3/4" head width for common tool compatibility
• Precise thread engagement with Class 2A UNC coarse threads ensuring consistent fit and reduced cross-threading risk
• Full thread coverage along the 1" length provides maximum grip strength and uniform stress distribution
• Regulatory compliance assurance meeting SAE J429, RoHS 3, and REACH standards for quality and environmental safety

Professional Applications & Engineering Value

This Grade 5 zinc-plated steel hex head screw delivers exceptional engineering value for heavy-duty industrial applications where vibration resistance and structural integrity are critical. The serrated flange eliminates the need for separate washers while providing superior locking action that prevents joint failure in automotive chassis, construction equipment, and machinery assemblies. The UNC coarse thread design ensures rapid installation and reliable performance in materials where fine threads might strip or fail. With fully threaded construction and external hex drive, this fastener provides maximum clamping force distribution and compatibility with standard industrial tools, making it ideal for maintenance, manufacturing, and assembly operations requiring high-strength fastening solutions that withstand extreme mechanical stress and environmental exposure.

Specification Summary & Compliance

This 1/2"-13 hex head screw features precision Class 2A thread fit with UNC coarse thread spacing, manufactured to exact inch system dimensions including 1" length and 1 5/64" flange diameter. The fastener complies with IFI 111 specifications where identified as SAE J429, ensuring consistent quality and performance standards. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of restricted substances and commitment to workplace safety standards for industrial procurement requirements.