S-90429A132 3/8"-24 x 2 3/4" 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 corrosion resistance with black-oxide coating, ideal for harsh industrial environments
- Superior tensile strength (130,000 psi) prevents fastener failure under extreme loads
- Precision Class 3A thread fit ensures secure, vibration-resistant connections in critical assemblies
- 82° countersink angle design provides flush mounting for streamlined surfaces and improved aerodynamics
- Partially threaded shank allows for precise clamping force control without compromising joint integrity
- 7/32" hex drive compatibility enables high-torque installation with standard industrial tools
- Full regulatory compliance meets ASME B18.3, ASTM F835, RoHS 3, and REACH standards for global supply chain integration
Professional Applications & Engineering Value
Engineered for demanding industrial applications, these black-oxide alloy steel flat head screws solve critical fastening challenges where vibration resistance and environmental durability are paramount. The UNF fine thread configuration (3/8"-24) maintains superior clamping force in high-stress assemblies, while the Rockwell C39 hardness rating ensures minimal wear during repeated disassembly cycles. The 82° countersink angle creates seamless surface transitions in precision machinery, automotive components, and heavy equipment where protrusion-free profiles are essential. Partially threaded design allows engineers to precisely control engagement depth in layered materials, preventing thread damage in sensitive substrates while maintaining 130,000 psi tensile strength for structural integrity.
Specification Summary & Compliance
Manufactured to precision Class 3A thread fit tolerances with UNF fine thread specifications (3/8"-24). Complies with ASME B18.3 dimensional standards and ASTM F835 mechanical properties. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance requirements. Features 2 3/4" length with 1 1/4" minimum thread length and standard 82° countersink angle for consistent performance across industrial applications.
