S-91253A152 6-32 x 7/8" 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
- Superior corrosion resistance with black-oxide coating on alloy steel, extending service life in demanding industrial environments
- High tensile strength of 130,000 psi ensures reliable performance under heavy loads and vibration
- Precise Class 3A thread fit provides excellent engagement and reduces the risk of cross-threading during assembly
- Hex drive design allows for high-torque installation and secure fastening in confined spaces
- 82° countersink angle enables flush mounting for a clean, professional finish in metal and wood applications
- Fully threaded shank offers maximum grip length and uniform clamping force along the entire fastener
- Rockwell C39 hardness maintains thread integrity and resists wear during repeated use
Professional Applications & Engineering Value
These 6-32 UNC flat head screws are engineered to solve critical fastening challenges in industrial machinery, automotive assemblies, and electronic enclosures. The black-oxide alloy steel construction provides excellent resistance to oxidation and mild chemicals, reducing maintenance needs in humid or corrosive environments. The coarse UNC thread spacing ensures quick installation and reliable holding power in softer materials, while the hex drive design prevents cam-out under high torque, minimizing tool slippage and damage to the fastener head. With a right-hand thread direction and fully threaded design, these screws deliver consistent clamping force across joints, making them ideal for applications requiring vibration resistance and long-term reliability.
Specification Summary & Compliance
This 7/8" flat head screw features a Class 3A thread fit for precise engagement and a standard 82° countersink angle. Manufactured to meet ASTM F835 specifications, it ensures consistent quality and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and regulatory adherence for global industrial use.
