S-94414A331 5-40 x 1/4" ASME B18.3, ASTM F835 Alloy Steel Torx Flat Head Screws
Alloy Steel Torx 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
- Enhanced torque transmission with Torx Plus IP10 drive, reducing cam-out and tool wear for reliable fastening in high-stress applications.
- Superior corrosion resistance from the black-oxide finish on alloy steel, extending service life in demanding industrial environments.
- High tensile strength of 140,000 psi ensures dependable performance under heavy loads, minimizing risk of fastener failure.
- Precise Class 3A thread fit provides consistent engagement and vibration resistance, crucial for machinery and equipment assembly.
- Full threading and coarse UNC spacing allow for faster installation and strong holding power in various materials.
- 82° countersink angle and flat head design enable flush mounting, ideal for applications requiring a smooth surface finish.
- Rockwell C39 hardness offers excellent durability and resistance to deformation during repeated use.
Professional Applications & Engineering Value
These 5-40 UNC flat head screws are engineered to address common industrial challenges such as vibration loosening and corrosion. Made from black-oxide alloy steel, they provide robust protection against rust and wear, making them suitable for harsh conditions in automotive, aerospace, and machinery sectors. The Torx Plus IP10 drive ensures efficient torque application, reducing installation time and preventing damage to the fastener head. With a coarse thread spacing and fully threaded design, they offer quick assembly and secure fastening in metal, plastic, and composite materials, enhancing productivity and reliability in industrial applications.
Specification Summary & Compliance
This product features a 5-40 UNC thread with Class 3A fit for precise dimensional accuracy and consistent performance. It complies with ASME B18.3 specifications, ensuring adherence to industry standards for flat head screw design. Additionally, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming environmental and safety compliance for global use.
