S-90429A235 1"-8 x 11 1/2" ASTM F835 Alloy Steel Hex Drive Flat Head Screws
Alloy Steel Hex Drive Flat 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
- Maximum load-bearing capacity with 130,000 PSI tensile strength for critical structural applications
- Superior wear resistance from Rockwell C37 hardness, ensuring long service life in demanding environments
- Precise thread engagement with Class 3A fit UNC coarse threads for reliable fastening and vibration resistance
- Optimal flush mounting thanks to the 82° countersink angle and standard flat head profile
- Secure installation and removal with the 5/8" hex drive, preventing tool slippage under high torque
- Enhanced durability from alloy steel construction, suitable for heavy-duty industrial use
- Regulatory compliance assurance meeting ASTM F835, RoHS 3, and REACH for global supply chain compatibility
Professional Applications & Engineering Value
These alloy steel flat head screws with 1"-8 UNC coarse threading and Class 3A thread fit are engineered to solve critical fastening challenges in heavy machinery, structural steelwork, and industrial equipment assembly. The partially threaded design provides concentrated clamping force where needed, while the 82° countersink angle ensures flush seating in precision-machined surfaces. The hex drive allows for high-torque installation without cam-out, making them ideal for applications requiring both superior tensile strength and vibration resistance. Manufactured from high-grade alloy steel, these screws maintain integrity under extreme loads and harsh operating conditions, reducing maintenance frequency and downtime in industrial settings.
Specification Summary & Compliance
This flat head screw features precision UNC coarse threads with Class 3A thread fit for exacting dimensional accuracy. The partially threaded configuration provides optimal clamping performance with a minimum thread length of 2-1/2". Manufactured to ASTM F835 specifications, these screws guarantee consistent quality and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and global market acceptance.
