S-94048A421 Length 4 1/2" ASME B18.2.1, ASTM A307, SAE J429 Wood Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with hot-dipped galvanized steel coating, ideal for outdoor and high-moisture wood applications.
• Superior holding power due to the thread forming design that creates strong, permanent threads in wood without pre-drilling in many cases.
• Easy and secure installation with an external hex head design, allowing for high torque application with common tools.
• Optimized for heavy-duty wood fastening with a 4-1/2" length and 5/8" diameter, providing deep penetration and reliable load-bearing capacity.
• Reduced wood splitting risk from the partially threaded shank and pointed tip, ensuring controlled entry and minimal material stress.
• Broad industry compliance meeting ASME B18.2.1, ASTM A307, and SAE J429 standards for consistent quality and performance.
• Environmentally responsible manufacturing with RoHS 3 and REACH compliance, ensuring safe use in regulated projects.

Professional Applications & Engineering Value

These hot-dipped galvanized steel hex head wood screws are engineered to address common challenges in heavy-duty wood construction, such as structural weakening from corrosion and insufficient grip strength. The thread forming tapping method displaces wood fibers to create tight, durable threads that resist loosening under vibration and load, making them ideal for decking, timber framing, and outdoor furniture. The external hex drive allows for high-torque installation with standard wrenches, reducing installation time while ensuring a secure fit. Combined with a right-hand thread direction and 5 threads per inch, these screws deliver consistent penetration and holding power in soft and hardwoods, minimizing the need for additional fasteners and maintenance in demanding environments.

Specification Summary & Compliance

This product features a 5/8" thread diameter with 5 threads per inch and a minimum thread length of 3" on a 4-1/2" overall length, ensuring precise engagement in wood applications. Manufactured to ASME B18.2.1, ASTM A307, and SAE J429 standards, these screws guarantee dimensional accuracy and mechanical properties for reliable performance. The screws are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming they are free of restricted hazardous substances and safe for industrial use.