S-90429A165 3/8"-24 x 7" 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
- Exceptional load-bearing capacity with 130,000 psi tensile strength for reliable performance in demanding applications
- Superior wear resistance due to Rockwell C39 hardness, ensuring extended service life under repetitive stress
- Precision fine threading (3/8"-24 UNF) provides enhanced vibration resistance and superior clamping force compared to coarse threads
- Class 3A thread fit guarantees tight tolerances for secure fastening in critical assemblies
- 82° countersink angle with standard flat head profile enables flush mounting for streamlined surfaces and improved aesthetics
- Hex drive compatibility (7/32") allows for high-torque installation with common industrial tools
- Partial threading design optimizes grip length while reducing material weight and cost
Professional Applications & Engineering Value
This alloy steel flat head screw addresses critical engineering challenges in heavy machinery, structural frameworks, and precision equipment assembly. The 3/8"-24 UNF fine threading maintains joint integrity in high-vibration environments, while the Class 3A thread fit ensures consistent engagement in tapped holes. The 82° countersink angle creates seamless transitions in countersunk applications, preventing snagging and improving safety. Manufactured from high-strength alloy steel, this fastener delivers reliable performance in demanding conditions where 130,000 psi tensile strength and Rockwell C39 hardness are essential for long-term durability. The 7" length with partial threading provides optimal grip range for thick material sections commonly encountered in industrial construction and equipment manufacturing.
Specification Summary & Compliance
This fastener maintains Class 3A thread fit per UNF standards with 3/8"-24 fine threading and 82° countersink angle. Manufacturing complies with ASTM F835 specifications for dimensional accuracy and mechanical properties. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting international environmental and safety regulations for industrial use.
