S-92316A820 5/8"-18 x 1 1/2" 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 load-bearing capacity with 150,000 PSI tensile strength and Grade 8 classification, ensuring reliable performance in high-stress industrial environments.
- Superior corrosion resistance from the black-phosphate steel coating, extending service life in demanding or outdoor applications.
- Precise thread engagement with UNF fine pitch and Class 2A fit, providing secure fastening and vibration resistance in machinery assemblies.
- Flanged head design eliminates the need for separate washers, distributing clamp load evenly and speeding up installation.
- External hex drive compatibility allows for high-torque application using standard tools, reducing assembly time and improving efficiency.
- Full threading along the 1-1/2" length offers maximum grip and adjustability in thick materials or stacked components.
- Compliance with industry standards including SAE J429, RoHS 3, and REACH, ensuring safety, environmental responsibility, and global acceptance.
Professional Applications & Engineering Value
Engineered for heavy-duty applications, this 5/8"-18 UNF hex head screw addresses critical challenges in construction, automotive, and machinery sectors where joint integrity is paramount. The black-phosphate steel coating combats rust and chemical exposure, ideal for outdoor equipment or humid environments. Its fine thread UNF design and Class 2A fit minimize loosening under dynamic loads, while the flanged feature enhances stability without extra components. With a Rockwell C32 hardness and full threading, it delivers consistent clamping force in thick assemblies, reducing maintenance and downtime in industrial settings.
Specification Summary & Compliance
This fastener adheres to inch system dimensions with a thread size of 5/8"-18 UNF, Class 2A thread fit for precise tolerance, and full threading over 1-1/2" length. It meets SAE J429 specifications for Grade 8 strength and is manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material reliability.
