S-94209A339 M8 x 20 mm DIN 7500 D Tapping Screws

Key Features & Benefits at a Glance

• Superior thread-forming performance with tri-lobe shank design that creates strong, permanent threads in ductile materials like aluminum, brass, and copper without pre-tapping
• Enhanced corrosion resistance through zinc-plated steel construction, providing reliable protection in various industrial environments
• Optimized installation efficiency with external hex drive and hex head design allowing for high torque application and secure fastening
• Excellent material displacement control thanks to the coarse 1.25mm pitch thread spacing, reducing installation torque while maintaining high pull-out strength
• Precise dimensional consistency with 20mm length and M8 thread size manufactured to tight tolerances for reliable, repeatable assembly results
• Reduced risk of material cracking with blunt tip design that gently displaces material during thread forming in softer metals
• Flange-enhanced stability with 17mm diameter flange providing increased bearing surface and improved load distribution

Professional Applications & Engineering Value

This M8x1.25 zinc-plated steel tapping screw delivers exceptional engineering value in metal assembly applications where traditional threaded fasteners would require additional tapping operations. The tri-lobe shank design is specifically engineered for thread forming in non-ferrous metals including aluminum, brass, and copper, eliminating the need for separate tapping processes and reducing assembly time and costs. The external hex drive configuration ensures high torque transmission during installation, while the coarse thread pitch provides excellent pull-out resistance in softer materials. The zinc plating offers reliable corrosion protection, making these metric coarse thread screws suitable for various industrial environments where durability and compliance with international standards are paramount for manufacturing efficiency and product longevity.

Specification Summary & Compliance

Manufactured to DIN 7500 D specifications for thread-forming screws, this M8x1.25 coarse thread screw features a 20mm length with tolerance of -0.65 to 0.65mm, ensuring precise dimensional control. The fully threaded design with right-hand thread direction and blunt tip is optimized for thread-forming applications. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental safety and regulatory acceptance for industrial use across multiple markets.