S-94414A385 5/16"-18 x 2" ASME B18.3, ASTM F835 Alloy Steel Torx Flat Head Screws

Key Features & Benefits at a Glance

• Exceptional torque transmission with Torx Plus IP40 drive prevents cam-out and tool slippage for secure installation
• Superior corrosion resistance through black-oxide coating extends service life in demanding industrial environments
• High tensile strength rating of 140,000 psi ensures reliable performance under heavy loads and vibration
• Precision thread fit with Class 3A tolerance provides consistent, secure fastening without cross-threading
• Optimized partial threading design allows for controlled clamp force distribution in assembly applications
• Standard 82° countersink angle enables flush mounting for clean, professional finishes
• Enhanced durability with Rockwell C39 hardness maintains structural integrity through repeated use

Professional Applications & Engineering Value

These 5/16"-18 UNC flat head screws deliver exceptional engineering value for industrial assembly applications where vibration resistance and precise fastening are critical. The black-oxide alloy steel construction provides superior protection against corrosion while maintaining the high tensile strength required for heavy-duty applications. The Torx Plus drive system addresses common installation challenges by eliminating cam-out issues, ensuring maximum torque transfer without damaging the drive recess. The partially threaded design with coarse UNC threading offers optimal grip in various materials, while the Class 3A thread fit guarantees consistent performance in precision assemblies. These features make them ideal for machinery, equipment manufacturing, and structural applications where reliability and compliance with industrial standards are paramount.

Specification Summary & Compliance

Manufactured to exacting standards with Class 3A thread fit precision and UNC coarse threading for superior engagement. These screws comply with ASME B18.3 specifications and ASTM F835 manufacturing standards, ensuring consistent quality and performance. The product is fully RoHS 3 (2015/863/EU) compliant and meets REACH (EC 1907/2006) requirements for environmental safety. The combination of precise dimensional control (82° countersink angle, specified head diameter and height) with high-strength alloy steel material guarantees reliable performance in demanding industrial fastening applications.