S-94414A121 5-40 x 3/8" 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
- Superior torque transmission with Torx Plus IP10 drive, reducing cam-out and tool wear for reliable fastening in high-stress applications.
- Exceptional tensile strength of 140,000 psi ensures high load-bearing capacity and resistance to mechanical failure in demanding environments.
- Enhanced corrosion resistance from black-oxide coating on alloy steel, extending service life in industrial settings.
- Precise Class 3A thread fit provides secure, vibration-resistant connections with minimal risk of loosening.
- Fully threaded coarse UNC design allows for quick installation and strong holding power in various materials.
- 82° flat head profile enables flush mounting for a clean, professional finish without protruding hardware.
- High hardness (Rockwell C39) maintains thread integrity and durability under repetitive use.
Professional Applications & Engineering Value
Engineered for precision and reliability, these 5-40 UNC flat head screws with Torx Plus IP10 drive address common industrial challenges like stripped drive heads and inconsistent torque application. The black-oxide alloy steel construction offers excellent corrosion protection, making them ideal for machinery, automotive assemblies, and electronic enclosures where environmental factors are a concern. With a coarse thread and Class 3A fit, they ensure rapid installation and secure fastening in metals and plastics, reducing assembly time and maintenance costs. Their fully threaded design and high tensile strength provide uniform stress distribution, minimizing the risk of joint failure in vibration-prone applications.
Specification Summary & Compliance
This screw adheres to inch system dimensions with a 5-40 UNC thread size, Class 3A thread fit for tight tolerances, and 82° countersink angle. It meets ASME B18.3 specifications for consistency and performance. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material restrictions are upheld.
