S-90409A147 1/2"-13 x 1" IFI 111, SAE J429 High-Strength Grade 8 Steel Flanged Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 150,000 psi ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
• Grade 8 steel construction with Rockwell C32 hardness provides superior durability and resistance to wear, extending service life in demanding environments.
• Flanged hex head design offers increased bearing surface for better load distribution and eliminates the need for separate washers, simplifying installation.
• Fully threaded UNC coarse thread with Class 2A fit allows for quick assembly and secure fastening in a wide range of materials.
• Compliance with IFI 111/SAE J429 standards guarantees consistent quality and interchangeability for industrial and automotive applications.
• RoHS 3 and REACH compliance ensures environmental safety and meets regulatory requirements for global supply chains.
• Right-hand coarse threading with external hex drive enables easy installation using standard tools, improving efficiency in maintenance and production.

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, this Grade 8 hex head screw addresses critical challenges in machinery assembly, construction, and automotive sectors where high tensile strength and corrosion resistance are paramount. The flanged design distributes clamping force evenly, preventing surface damage and loosening under vibration. Made from high-strength steel with a Rockwell C32 hardness, it withstands extreme loads and harsh conditions, reducing maintenance downtime. The 1/2"-13 UNC coarse thread ensures rapid installation in metals and composites, while full threading provides consistent grip along the entire 1" length. Ideal for structural connections, equipment frames, and load-bearing components, this screw delivers reliable performance where failure is not an option.

Specification Summary & Compliance

This hex head screw features precise Class 2A thread fit with UNC coarse threading (1/2"-13) and complies with IFI 111/SAE J429 manufacturing standards. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safety and sustainability. Dimensions include a 1" length, 3/4" head width, and 1 5/64" flange diameter for consistent performance in inch-based systems.