S-91263A525 8-32 x 5/8" 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 holding power with 130,000 psi tensile strength for reliable performance in demanding applications.
- Superior corrosion resistance provided by zinc-plated alloy steel, extending service life in harsh environments.
- Precise Class 3A thread fit ensures tight, secure fastening and reduces the risk of loosening under vibration.
- Full threading along the 5/8" length offers maximum grip and uniform load distribution.
- High hardness (Rockwell C39) resists wear and deformation, maintaining integrity during installation and use.
- Easy installation with hex drive (3/32" drive size) allows for efficient torque application and reduced slippage.
- Compliance with industry standards including ASTM F835, RoHS 3, and REACH for safe, regulated use.
Professional Applications & Engineering Value
These 8-32 UNC flat head screws are engineered to address critical fastening challenges in industrial settings. Made from zinc-plated alloy steel, they provide excellent resistance to corrosion and mechanical stress, ideal for machinery, automotive assemblies, and electronic enclosures where durability is paramount. The coarse UNC thread and Class 3A fit ensure quick, secure engagement in various materials, reducing installation time and minimizing thread stripping. The flat head design with an 82° countersink angle sits flush for smooth surfaces, while the hex drive facilitates high-torque applications without cam-out. This combination of high tensile strength and full threading delivers reliable performance in heavy-duty fastening, helping prevent joint failure and maintenance downtime.
Specification Summary & Compliance
This screw adheres to precise dimensional standards, including a Class 3A thread fit for tight tolerances and UNC coarse threading with a size of 8-32. It meets ASTM F835 specifications for mechanical properties and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory adherence in industrial use.
