S-90409A174 5/8"-11 x 1 3/4" IFI 111, SAE J429 High-Strength Grade 8 Steel Flanged Hex Head Screws
High-Strength Grade 8 Steel Flanged Hex Head Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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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 in demanding environments.
- Coarse UNC threading with Class 2A fit allows for quick assembly and secure fastening, minimizing installation time and improving efficiency.
- Integrated flange design distributes load evenly, eliminating the need for separate washers and enhancing joint stability.
- Fully threaded shank offers maximum grip length and versatility for various material thicknesses in industrial setups.
- External hex drive and hex head enable easy installation with standard tools, reducing labor costs and preventing stripping.
- Compliance with SAE J429, RoHS 3, and REACH ensures environmental safety and meets rigorous industry standards for global supply chains.
Professional Applications & Engineering Value
Engineered for heavy-duty applications, this Grade 8 steel hex head screw addresses common industrial challenges such as vibration loosening and structural fatigue. The coarse UNC thread with Class 2A fit provides excellent engagement in softer materials or where rapid assembly is critical, while the flanged feature enhances clamping force without additional components. Ideal for machinery, construction, and automotive sectors, its 150,000 psi tensile strength and Rockwell C32 hardness ensure long-term reliability under extreme loads, reducing maintenance downtime and improving operational safety in right-hand threaded systems.
Specification Summary & Compliance
This screw adheres to precise inch system dimensions, including a 5/8"-11 UNC thread size with Class 2A thread fit for consistent accuracy. Manufactured to meet IFI 111 specifications under SAE J429, it guarantees performance in high-strength applications. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for global industrial use.
