S-90429A136 7/16"-14 x 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 tensile strength of 130,000 psi ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
- Black-oxide coating on alloy steel provides enhanced corrosion resistance, extending service life in demanding industrial environments.
- Class 3A thread fit offers superior precision and tighter tolerances for secure, vibration-resistant assemblies.
- Partially threaded design allows for controlled clamping force and prevents over-tightening in critical joints.
- Hex drive and flat head combination enables easy installation and a flush finish, ideal for space-constrained applications.
- Rockwell C39 hardness ensures excellent wear resistance and durability under repetitive loads.
- Compliance with ASME B18.3 and ASTM F835 guarantees consistent quality and interoperability with standardized components.
Professional Applications & Engineering Value
This 7/16"-14 UNC flat head hex screw is engineered to address common industrial fastening challenges, such as joint integrity and environmental durability. The black-oxide alloy steel construction combats rust and oxidation, making it suitable for machinery, automotive, and structural assemblies exposed to harsh conditions. Its coarse UNC threading and partial threading provide rapid installation and precise tension control, reducing assembly time while minimizing loosening from vibrations. With a high tensile strength and Class 3A thread fit, it ensures reliable performance in heavy-duty applications, from construction equipment to manufacturing fixtures, enhancing overall system safety and longevity.
Specification Summary & Compliance
This screw adheres to Class 3A thread fit for precise dimensional accuracy and meets ASME B18.3 and ASTM F835 manufacturing standards. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material restrictions are met for global industrial use.
