S-91253A247 10-24 x 1" ASTM F835 Alloy Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Exceptional durability with 130,000 psi tensile strength and Rockwell C39 hardness for reliable performance in demanding applications
• Superior corrosion resistance provided by black-oxide coating on alloy steel, extending service life in industrial environments
• Precise Class 3A thread fit ensures tight tolerances and secure fastening with reduced vibration loosening
• Efficient hex drive installation with 1/8" drive size allows for quick assembly and high torque application
• Optimal flush mounting with 82° countersink angle and standard flat head profile for smooth surface finishes
• Full threading coverage along the 1" length provides maximum grip strength and load distribution
• Industry compliance assurance meeting ASTM F835, RoHS 3, and REACH standards for quality and environmental safety

Professional Applications & Engineering Value

These 10-24 UNC flat head screws deliver critical engineering solutions where high tensile strength and precise flush mounting are essential. The black-oxide alloy steel construction provides superior corrosion protection in manufacturing equipment, machinery assemblies, and automotive applications where environmental exposure is a concern. The coarse thread spacing and Class 3A thread fit ensure rapid installation with minimal cross-threading risk, while the hex drive design accommodates high-torque applications without stripping. The 82° countersink angle creates seamless surface transitions in metal fabrication and precision engineering projects, making these fully threaded screws ideal for structural applications requiring both aesthetic finish and mechanical reliability.

Specification Summary & Compliance

Manufactured to exacting standards with Class 3A thread fit precision and UNC coarse thread profile. These flat head screws comply with ASTM F835 specifications for mechanical properties and dimensional accuracy. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring safe use across industrial sectors. The right-hand thread direction and standardized dimensions guarantee compatibility with existing 10-24 UNC threaded components and tooling systems.