S-91306A302 12-24 x 3/4" ASTM F835 Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 120,000 psi ensures reliable performance in demanding industrial applications
• Corrosion-resistant zinc plating on alloy steel provides enhanced durability and longevity in harsh environments
• Class 3A thread fit delivers superior precision and secure fastening with reduced risk of loosening
• Coarse UNC threading enables quick installation and excellent grip in various materials
• Hex drive design with 1/8" drive size allows for efficient torque application and easy installation
• Fully threaded construction ensures maximum holding power along the entire screw length
• Rounded button head profile offers a finished appearance while preventing snagging on equipment

Professional Applications & Engineering Value

These 12-24 UNC zinc-plated alloy steel rounded head screws are engineered to solve critical fastening challenges in industrial settings. The combination of Class 3A coarse threading and 120,000 psi tensile strength provides exceptional resistance to vibration and mechanical stress, making them ideal for machinery assembly, automotive components, and heavy equipment applications. The zinc-plated surface treatment protects against corrosion in demanding environments, while the hex drive design ensures secure tool engagement during installation. These fully threaded screws deliver uniform clamping force distribution, preventing joint failure in high-stress applications where reliability is paramount for operational safety and equipment longevity.

Specification Summary & Compliance

These screws feature precision Class 3A thread fit with UNC coarse threading standards, ensuring dimensional accuracy and compatibility. Manufacturing complies with ASTM F835 specifications for consistent quality and performance. The products are RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant, meeting current environmental regulations for hazardous substance restrictions. With Rockwell C39 hardness and standardized dimensions including 3/4" length and 0.336" head diameter, these fasteners deliver reliable performance across industrial applications requiring high-strength, corrosion-resistant fastening solutions.