S-91253A863 3/4"-10 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 tensile strength of 130,000 psi ensures reliable performance under high-stress conditions, reducing the risk of fastener failure in demanding applications.
- Superior corrosion resistance from the black-oxide finish on alloy steel, extending service life and maintaining integrity in harsh industrial environments.
- Precise Class 3A thread fit provides tighter tolerances for secure, vibration-resistant connections, minimizing loosening in critical assemblies.
- Partially threaded design allows for controlled clamping force and easier alignment, ideal for applications requiring specific grip range.
- 82° countersink angle enables a flush fit in standard countersunk holes, enhancing aesthetics and preventing snagging in machinery.
- 1/2" hex drive compatibility offers efficient installation with common tools, speeding up assembly processes and reducing labor time.
- Compliance with ASTM F835 and environmental regulations ensures consistent quality and safe use, meeting industry standards for reliability and sustainability.
Professional Applications & Engineering Value
This 3/4"-10 UNC flat head screw is engineered to address common industrial challenges, such as vibration-induced loosening and corrosion in heavy machinery. The black-oxide alloy steel construction provides enhanced durability, while the Class 3A thread fit ensures precise engagement for stable connections in structural applications like equipment frames, automotive assemblies, and construction projects. Its partially threaded design allows for optimal load distribution, reducing stress concentrations. With a Rockwell C37 hardness and high tensile strength, it withstands extreme forces, making it ideal for industrial screws in manufacturing and maintenance where reliability is critical.
Specification Summary & Compliance
This screw adheres to UNC coarse threading with a Class 3A thread fit for high precision, and dimensions include a 7" length with a minimum thread length of 2". It meets ASTM F835 specifications for mechanical properties and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material integrity.
