S-91253A193 8-32 x 7/16" ASTM F835 Alloy Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with black-oxide coating, ideal for harsh industrial environments
• Superior tensile strength (130,000 PSI) ensures reliable performance under high-stress applications
• Precise Class 3A thread fit provides secure, vibration-resistant fastening with minimal backlash
• 82° countersink angle allows for flush mounting in standard chamfered holes
• Fully threaded design maximizes grip length and load distribution across the entire fastener
• Hex drive (3/32") compatibility enables easy installation with common industrial tools
• Rockwell C39 hardness rating guarantees long-term durability and wear resistance

Professional Applications & Engineering Value

These 8-32 UNC flat head screws are engineered from black-oxide alloy steel to address critical industrial fastening challenges. The combination of coarse thread spacing and Class 3A thread fit ensures rapid assembly with superior vibration resistance in machinery, automotive, and heavy equipment applications. The 82° countersink angle provides a flush finish that eliminates protrusions in precision assemblies. With 130,000 PSI tensile strength and Rockwell C39 hardness, these screws maintain integrity under dynamic loads and extreme conditions, making them ideal for high-stress industrial applications where fastener failure is not an option.

Specification Summary & Compliance

Manufactured to ASME B18.3 and ASTM F835 specifications with Class 3A thread tolerance for precision fit. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Features UNC coarse threads with right-hand direction and standard flat head profile for consistent performance across industrial applications.