S-94209A175 1/4"-20 x 3/4" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, extending service life in demanding industrial environments.
• Enhanced torque transmission and reduced cam-out with the Torx Plus IP30 drive system, ensuring reliable installation and preventing tool slippage.
• Strong, permanent threads in ductile materials like aluminum, brass, and copper due to the thread-forming Tri-Lobe shank design, eliminating the need for a separate tapping operation.
• Wide material compatibility with a recommended 5.5 mm (0.2165") drill bit, providing versatility across various assembly applications.
• Secure and stable fastening from the UNC coarse thread and pan head design, offering excellent clamp load and a low-profile, rounded head finish.
• Full-length threading for maximum grip across the entire 3/4" length, ensuring consistent holding power along the entire fastener.
• Compliance with major environmental regulations including RoHS 3 and REACH, making them suitable for global supply chains and regulated industries.

Professional Applications & Engineering Value

These zinc-plated steel tapping screws are engineered to solve common challenges in assembling aluminum, brass, and copper components. The thread-forming design with its Tri-Lobe shank cross-section displaces material to create strong, load-bearing internal threads without generating chips, which is critical for preventing contamination in electrical or precision assemblies. The Torx Plus IP30 drive provides a significant engineering advantage by allowing higher torque application compared to standard drives, reducing the risk of head stripping and improving assembly line efficiency. This combination of a coarse UNC 1/4"-20 thread and a durable pan head makes these screws ideal for securing sheet metal, electronic enclosures, and HVAC components where vibration resistance and a reliable, flush finish are paramount.

Specification Summary & Compliance

This fastener features a 1/4"-20 UNC coarse thread with a length of 3/4" and a length tolerance of -0.03" to 0. The screw is manufactured from zinc-plated steel with a Torx Plus IP30 drive, a pan head style, and a blunt tip. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring adherence to strict international standards for hazardous substances.