S-91253A151 6-32 x 3/4" ASTM F835 Alloy Steel Hex Drive Flat Head Screws

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.
• Fully threaded design offers consistent holding power along the entire length, enhancing grip and stability in various materials.
• 82° countersink angle and flat head profile allow for flush mounting, improving aesthetics and preventing snagging in finished surfaces.
• Hex drive (5/64") compatibility enables easy installation with standard tools, speeding up assembly and reducing labor time.
• Compliance with industry standards including ASME B18.3 and ASTM F835 ensures consistent quality and interoperability in professional settings.

Professional Applications & Engineering Value

These 6-32 UNC flat head screws are engineered to address common industrial challenges, such as vibration-induced loosening and corrosion in machinery assemblies. Made from black-oxide alloy steel, they combine high Rockwell C39 hardness with a protective coating to withstand abrasive conditions and moisture exposure. The coarse thread spacing and right-hand threading facilitate quick installation in metals and plastics, while the fully threaded design ensures uniform load distribution. Ideal for applications in automotive, electronics, and heavy equipment, these screws provide reliable fastening that reduces maintenance needs and downtime, supported by compliance with RoHS 3 and REACH regulations for safe, sustainable use.

Specification Summary & Compliance

This product adheres to precise dimensional standards, including Class 3A thread fit for tight tolerances and UNC thread type with a size of 6-32. It meets ASME B18.3 and ASTM F835 specifications for consistency and performance. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring environmental safety and regulatory alignment in industrial markets.