S-91255A702 7/16"-14 x 3/4" ASTM F835 Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with black-oxide coating, extending service life in demanding industrial environments
• Superior holding power achieved through Class 3A thread fit and coarse UNC threading for maximum engagement
• High tensile strength (120,000 psi) and Rockwell C39 hardness for reliable performance under heavy loads
• Easy installation and removal with 1/4" hex drive design, reducing assembly time and tool wear
• Full threading coverage ensures consistent clamping force along the entire 3/4" length
• Rounded button head profile provides a finished appearance while minimizing snagging hazards
• Compliance with major industrial standards including ASME B18.3 and ASTM F835 for guaranteed quality

Professional Applications & Engineering Value

These black-oxide alloy steel screws deliver critical performance advantages in industrial assembly applications where vibration resistance and structural integrity are paramount. The Class 3A thread fit with coarse UNC threading ensures superior engagement in materials where fine threads might strip or fail, while the fully threaded design distributes clamping force evenly across the entire fastener length. The combination of 120,000 psi tensile strength and Rockwell C39 hardness provides exceptional resistance to shear forces and deformation in heavy machinery, automotive systems, and structural frameworks. The rounded head profile with 1/4" hex drive facilitates installation in confined spaces while maintaining a low-profile appearance that reduces workplace hazards.

Specification Summary & Compliance

This 7/16"-14 UNC screw features precision Class 3A thread fit with coarse spacing and right-hand threading. Manufactured to exacting standards including ASME B18.3 and ASTM F835 specifications. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global industrial markets.