S-94209A475 2-56 x 3/4" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-coated steel for extended service life in harsh environments.
• High-torque installation capability via Torx Plus IP7 drive, reducing cam-out and tool wear.
• Exceptional thread-forming performance in non-ferrous metals like aluminum, brass, and copper, eliminating the need for pre-tapped holes.
• Enhanced pull-out resistance due to the Tri-Lobe shank design that displaces material for a secure, vibration-resistant fit.
• Reliable coarse UNC threading (2-56) for quick assembly and strong holding power in softer materials.
• Full 3/4" threading ensures maximum engagement and uniform stress distribution along the entire fastener length.
• Compliance with global environmental standards (RoHS 3 and REACH) for safe, sustainable use in regulated industries.

Professional Applications & Engineering Value

This 2-56 UNC Tri-Lobe tapping screw is engineered to address common challenges in assembling aluminum, brass, and copper components, where traditional fasteners may strip threads or require additional tapping steps. The thread-forming Tri-Lobe shank cold-forms mating threads as it is driven, creating a tight, zero-clearance fit that resists loosening under vibration—a critical advantage in electronics enclosures, HVAC systems, and automotive assemblies. Made from black corrosion-resistant-coated steel, it offers durability against moisture and chemicals, while the Torx Plus IP7 drive enables high torque application without slippage, speeding up production and reducing installation errors. Ideal for high-volume manufacturing, this screw ensures consistent performance and reduces total cost of ownership by minimizing rework and maintenance.

Specification Summary & Compliance

This screw features a No. 2 size with 2-56 UNC coarse threads, a 0.086" thread diameter, and a 3/4" length with a tolerance of -0.03" to 0". It complies with standard thread forming practices for UNC specifications and is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and reliability in industrial applications.