S-92316A776 1/2"-20 x 4" 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 for reliable performance in high-stress industrial applications
• Superior corrosion protection through black-phosphate steel coating that extends service life in demanding environments
• Precise thread engagement with UNF fine threading and Class 2A fit ensuring vibration-resistant connections
• Enhanced installation efficiency featuring a flanged hex head design that eliminates separate washers and provides superior clamping force
• Optimized strength-to-weight ratio through Grade 8 classification and Rockwell C32 hardness for durable, heavy-duty fastening
• Versatile partial threading allowing unthreaded shank sections to bear shear loads while threaded portions secure connections
• Regulatory compliance assurance meeting SAE J429 specifications and environmental standards including RoHS 3 and REACH

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, this Grade 8 hex head screw delivers exceptional performance in construction equipment, machinery assembly, and structural frameworks where high tensile strength and vibration resistance are critical. The black-phosphate steel coating provides superior corrosion protection in challenging environments, while the UNF fine thread configuration ensures precise, secure fastening that maintains integrity under dynamic loads. The flanged design eliminates the need for separate washers, reducing assembly time and providing distributed clamping force. With partial threading, the unthreaded shank section effectively bears shear loads, making this 1/2"-20 hex head screw ideal for applications requiring both clamping and shear strength in automotive, manufacturing, and heavy equipment sectors.

Specification Summary & Compliance

This 4" length hex head screw features 1/2"-20 UNF fine threads with Class 2A thread fit tolerance for precise engagement. Manufactured to SAE J429 specifications for Grade 8 fasteners, it delivers consistent 150,000 PSI tensile strength and Rockwell C32 hardness. The product complies with IFI 111 standards and meets environmental regulations including RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) requirements, ensuring both performance reliability and regulatory adherence for industrial applications.