S-94414A591 5/16"-24 x 1" 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
- Exceptional corrosion resistance with black-oxide coating, extending service life in demanding industrial environments
- Superior torque transmission through Torx Plus IP40 drive system, reducing cam-out and tool wear
- High tensile strength of 140,000 psi ensures reliable performance under extreme mechanical stress
- Precision Class 3A thread fit provides consistent engagement and vibration resistance in critical assemblies
- Optimized 82° countersink angle allows for flush mounting in standard applications
- Full threading along 1" length enables maximum adjustability and holding power
- Rockwell C39 hardness rating maintains structural integrity through repeated installation cycles
Professional Applications & Engineering Value
Engineered for precision industrial applications where reliability is non-negotiable, these black-oxide alloy steel flat head screws deliver exceptional performance in automotive, aerospace, and heavy machinery assemblies. The Torx Plus IP40 drive system eliminates common fastening issues like screw head stripping while providing superior torque transfer efficiency. With fine UNF threading and Class 3A fit, these screws maintain secure connections in high-vibration environments where loosening could cause catastrophic failure. The combination of 140,000 psi tensile strength and Rockwell C39 hardness ensures these fasteners withstand both static and dynamic loading conditions, making them ideal for critical structural connections requiring repeated maintenance access.
Specification Summary & Compliance
Manufactured to exacting ASME B18.3 specifications and ASTM F835 standards, these screws feature precision Class 3A thread fit with 5/16"-24 UNF fine threading. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations ensures safe use across global markets. The 82° standard countersink angle and fully threaded 1" length provide consistent performance in industrial fastening applications requiring flush mounting and maximum thread engagement.
