S-90409A159 1/2"-13 x 4 1/2" IFI 111, SAE J429 High-Strength Grade 8 Steel Flanged Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with 150,000 psi tensile strength, ideal for high-stress industrial assemblies.
• Superior durability and wear resistance due to Grade 8 steel and Rockwell C32 hardness, extending service life.
• Reliable coarse UNC threading ensures quick installation and secure fastening in demanding environments.
• Integrated flange design distributes clamping force evenly, reducing the need for separate washers.
• Precise Class 2A thread fit guarantees consistent engagement and vibration resistance.
• External hex drive compatibility allows for easy torque application with standard tools.
• Compliance with stringent standards including SAE J429, RoHS 3, and REACH for safe, regulated use.

Professional Applications & Engineering Value

This Grade 8 hex head screw is engineered for heavy-duty applications where failure is not an option. Its 1/2"-13 UNC coarse thread and partially threaded design provide excellent grip and resistance to loosening under dynamic loads, making it ideal for machinery, construction, and automotive sectors. The steel construction with Rockwell C32 hardness ensures it withstands harsh conditions, while the flange enhances stability and reduces point stress. By meeting SAE J429 and environmental regulations, it offers reliability and compliance for critical industrial fasteners needs.

Specification Summary & Compliance

This screw adheres to Class 2A thread fit and UNC coarse thread standards with precise dimensions: 1/2"-13 thread size and 4 1/2" length. It conforms to IFI 111 specifications under SAE J429, ensuring mechanical integrity. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting environmental and safety requirements for global industrial use.