S-96660A169 1/4"-20 x 1/4" Steel Flanged Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Enhanced Corrosion Resistance: Zinc-plated alloy steel construction provides reliable protection against rust and environmental degradation, extending service life in demanding industrial settings.
• Superior Tensile Strength: With a tensile strength of 120,000 psi, this screw ensures a secure, high-integrity fastening connection that resists failure under heavy loads.
• Precision Thread Fit: Class 3A UNC coarse threads offer excellent engagement and vibration resistance, reducing the risk of loosening in high-stress applications.
• Convenient & Secure Drive: The 5/32" hex drive allows for high-torque installation with standard tools, ensuring a tight fit and preventing cam-out.
• Integrated Flange Design: The wide rounded (button) head with a 0.563" flange diameter distributes clamping force over a wider area, minimizing surface damage and providing a more stable hold.
• High Durability: A Rockwell C32 hardness rating ensures the screw maintains its form and thread integrity, resisting wear and deformation during installation and use.
• Regulatory Compliance: Meets RoHS 3 and REACH environmental standards, ensuring they are safe for use in regulated industries and global markets.

Professional Applications & Engineering Value

This 1/4"-20 rounded head screw is engineered to solve critical fastening challenges in industrial assembly, machinery, and heavy equipment. The zinc-plated alloy steel material combats corrosion, making it ideal for environments exposed to moisture or chemicals. Its fully threaded UNC coarse thread and Class 3A fit provide rapid installation and superior resistance to vibrational loosening, a common failure point in dynamic systems. The combination of a hex drive and integrated flange on the button head streamlines assembly, eliminating the need for a separate washer and providing a larger bearing surface to prevent pull-through in softer materials. This design delivers reliable, long-term performance where high-strength fastening is non-negotiable.

Specification Summary & Compliance

This screw features a 1/4"-20 UNC coarse thread with a precision Class 3A thread fit, ensuring consistent and reliable performance. It is manufactured from zinc-plated alloy steel and is fully threaded. The product is confirmed to be compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations.