S-90429A118 3-48 x 5/16" 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 tensile strength of 130,000 psi ensures reliable performance under high-stress conditions, reducing the risk of fastener failure.
- Class 3A thread fit provides superior precision and tight tolerances for secure, vibration-resistant assemblies in demanding applications.
- Black-oxide finish on alloy steel offers enhanced corrosion resistance and durability, extending service life in harsh industrial environments.
- 82° countersink angle and flat head design allows for flush mounting, minimizing protrusion and improving aesthetic and functional integration.
- Fully threaded UNC coarse spacing enables faster installation and stronger holding power in a wide range of materials.
- Hex drive (1/16") ensures easy, secure tool engagement, reducing slippage and installation time.
- Compliance with ASME B18.3, ASTM F835, RoHS 3, and REACH guarantees adherence to industry standards and environmental regulations for safe, reliable use.
Professional Applications & Engineering Value
Engineered for precision and endurance, these 3-48 UNC flat head screws are ideal for applications requiring high strength and reliable fastening, such as machinery assembly, electronic enclosures, and automotive components. The black-oxide alloy steel construction resists corrosion and wear, while the Class 3A thread fit ensures minimal backlash and superior load distribution in coarse thread configurations. The 82° countersink angle and fully threaded design provide seamless integration and enhanced grip, addressing common issues like loosening under vibration. By meeting ASME B18.3 and ASTM F835 standards, these screws deliver consistent performance in industrial settings, reducing maintenance needs and downtime.
Specification Summary & Compliance
This product features precise Class 3A thread fit with UNC coarse thread spacing, ensuring tight tolerances and reliable engagement. It complies with ASME B18.3 and ASTM F835 specifications for dimensional accuracy and performance. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, confirming adherence to environmental and safety regulations for industrial use.
