S-91478A720 Length 2" ASME B18.2.1 Wood Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, ensuring long-lasting performance in various environmental conditions.
• Enhanced torque transmission and reduced slipping thanks to the external hex drive design, allowing for secure installation with standard tools.
• Strong, reliable thread-forming action that creates precise mating threads in wood, minimizing splitting and providing excellent pull-out resistance.
• Optimized for heavy-duty wood applications with a 1/2" diameter and 2" length, delivering maximum holding power in framing and construction.
• Partially threaded shank for improved clamping force, ensuring materials are drawn tightly together without unnecessary thread engagement.
• Compliance with industry standards including ASME B18.2.1, guaranteeing dimensional accuracy and interchangeability for professional use.
• Environmentally responsible manufacturing with RoHS 3 and REACH compliance, meeting strict regulations for hazardous substance control.

Professional Applications & Engineering Value

Engineered for demanding wood construction and industrial woodworking, these zinc-plated steel hex head wood screws address common challenges like material splitting and weak fastening. The thread-forming tapping method eliminates the need for pre-drilling in many cases, reducing labor time while creating strong, permanent threads that resist loosening under vibration. With a right-hand thread direction and partially threaded design, they provide efficient installation and superior clamping in applications such as timber framing, furniture assembly, and structural wood connections. The external hex drive ensures high torque capability, making them ideal for use with impact drivers in heavy-duty scenarios where reliability is critical.

Specification Summary & Compliance

This screw features a 1/2"-13 thread diameter with a minimum thread length of 1 1/2" and complies with ASME B18.2.1 standards for dimensional precision and mechanical properties. It is manufactured from zinc-plated steel and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring adherence to environmental and safety regulations for hazardous substances.