S-92316A353 3/4"-16 x 3 1/2" IFI 111, SAE J429 High-Strength Grade 8 Steel Flanged Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional strength and reliability with Grade 8 classification, supporting up to 150,000 psi tensile strength for demanding industrial applications.
• Enhanced corrosion resistance through black-phosphate steel coating, extending service life in harsh environments.
• Secure and stable fastening due to the integrated flange design, eliminating the need for separate washers and distributing load effectively.
• Precise thread engagement with UNF fine threading and Class 2A fit, ensuring vibration resistance and reduced loosening in high-stress assemblies.
• Optimized for heavy machinery featuring a 3 1/2" length and partial threading for focused grip strength where it's needed most.
• Easy installation and removal with a standard 1 1/8" external hex head, compatible with common wrenches for efficient maintenance.
• Compliance with rigorous industry standards including SAE J429 and IFI 111, guaranteeing consistent quality and performance.

Professional Applications & Engineering Value

This Grade 8 hex head screw is engineered to address critical challenges in heavy-duty industrial settings, such as construction equipment, agricultural machinery, and automotive assemblies. The black-phosphate steel construction provides a durable barrier against rust and abrasion, significantly reducing maintenance frequency in corrosive or high-moisture environments. Its UNF fine threading and Class 2A thread fit deliver superior clamping force and vibration resistance, preventing joint failure under dynamic loads. The flanged design enhances stability by increasing the bearing surface, making it ideal for applications where space constraints or high shear forces are concerns. By integrating these features, this fastener ensures long-term reliability and safety in demanding industrial applications, from structural frames to powertrain components.

Specification Summary & Compliance

This screw adheres to precise dimensional tolerances, including a Class 2A thread fit for consistent engagement and a UNF fine thread with 16 TPI. It conforms to IFI 111 and SAE J429 specifications, ensuring mechanical properties like 150,000 psi tensile strength and Rockwell C32 hardness are met. Additionally, it is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, supporting environmentally responsible manufacturing and use in global markets.