S-92323A554 3/8"-16 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 Capacity: With a tensile strength of 110,000 psi, this screw reliably handles high-stress applications without failure.
• Superior Corrosion Resistance: Zinc-plated steel construction provides durable protection against rust, extending service life in harsh environments.
• Effortless Installation & Removal: The external hex drive and coarse UNC threads enable quick, secure fastening with standard tools.
• Enhanced Stability & Vibration Resistance: The integrated flange and serrations distribute load evenly and prevent loosening under dynamic conditions.
• Consistent Performance & Interchangeability: Manufactured to Class 2A thread fit and SAE J429 standards, ensuring precise, reliable mating with nuts and tapped holes.
• Robust Material Integrity: Rockwell C22 hardness offers excellent wear resistance, maintaining thread integrity through repeated use.
• Broad Regulatory Compliance: Meets RoHS 3 and REACH standards, making it suitable for regulated industries and global supply chains.

Professional Applications & Engineering Value

This Grade 5 zinc-plated steel hex head screw is engineered to address common industrial challenges such as joint failure, corrosion, and assembly inefficiency. The fully threaded UNC coarse thread design ensures maximum grip in a variety of materials, reducing the risk of strip-out in soft substrates or under vibration. The flanged head with serrations eliminates the need for a separate washer, providing a larger bearing surface that distributes clamping force and resists rotation. Combined with the external hex drive, it allows for high torque application, making it ideal for heavy machinery, structural frames, and automotive assemblies where high tensile strength and durability are critical. Its zinc plating further enhances longevity in outdoor or humid conditions, supporting maintenance-free operation in construction, agriculture, and material handling equipment.

Specification Summary & Compliance

This fastener features a 3/8"-16 UNC coarse thread with Class 2A thread fit for consistent engagement and interchangeability. It complies with SAE J429 specifications for Grade 5 mechanical properties, ensuring reliable performance in demanding applications. The product is also RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, confirming adherence to environmental and safety regulations for hazardous substances.