S-90469A131 Length 50 mm DIN 7504 K, ISO 15480 Tapping Screws

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with zinc-plated steel construction, ensuring long-term reliability in demanding industrial environments.
• Superior drilling efficiency with a No. 2 drill tip and 9.3mm length, capable of penetrating up to 0.173" thickness in steel and sheet metal without pre-drilling.
• Increased holding power and stability due to the integrated 10.5mm flange, distributing load evenly and reducing the risk of loosening under vibration.
• Quick and secure installation with an external hex head drive, allowing for high-torque application and easy tool access in confined spaces.
• Reliable thread-forming capability with BSD tapping method, creating strong, permanent threads in base materials for improved fastening integrity.
• Full-length threading provides consistent grip along the entire 50mm length, maximizing pull-out resistance in various material thicknesses.
• Compliance with international standards including DIN 7504 K, ensuring dimensional accuracy and performance consistency for global engineering projects.

Professional Applications & Engineering Value

These M4.8 x 50mm zinc-plated steel flanged tapping screws are engineered to address common challenges in fastening steel and sheet metal assemblies. The thread-forming (BSD) design eliminates the need for separate tapping operations, reducing installation time and labor costs while creating durable, high-strength threads that resist stripping. The No. 2 drill tip with a 9.3mm length enables self-drilling through materials up to 0.173" thick, streamlining production lines and minimizing tool changes. Combined with the external hex drive and flanged head, these screws provide exceptional clamp load and vibration resistance, making them ideal for automotive, HVAC, and construction applications where reliability and speed are critical.

Specification Summary & Compliance

This fully threaded screw with right-hand thread direction and round shank cross-section adheres to precise metric dimensions (M4.8 x 50mm, head width 8mm, head height 4.3mm). Manufactured in compliance with DIN 7504 K specifications for thread-forming tapping screws, ensuring consistent performance and interchangeability. The product meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, confirming it is free of restricted hazardous substances and safe for use in regulated industries.