S-94209A322 M4 x 16 mm DIN 7500 D Tapping Screws

Key Features & Benefits at a Glance

• Superior thread forming capability in softer materials like aluminum, brass, and copper, ensuring reliable, high-strength fastening without pre-tapping.
• Enhanced vibration resistance provided by the tri-lobe shank design, which creates a secure, locking fit to prevent loosening in dynamic applications.
• High driving efficiency and torque transfer from the external hex head, allowing for quick installation with standard tools and reducing assembly time.
• Excellent corrosion resistance due to the zinc-plated steel construction, extending the screw's service life in various industrial environments.
• Guaranteed material engagement and pull-out strength with the coarse thread pitch (0.7 mm), ideal for use in ductile metals.
• Full compliance with DIN 7500 D standards, ensuring consistent quality, dimensional accuracy, and performance for thread-forming screws.
• Blunt tip design for easier starting and reduced risk of cross-threading, improving installation accuracy and component integrity.

Professional Applications & Engineering Value

This M4 metric tapping screw is engineered to solve common fastening challenges in aluminum, brass, and copper assemblies. The zinc-plated steel material offers a balance of strength and corrosion resistance, while the thread forming action creates strong, permanent threads in the base material, eliminating the need for separate tapping operations and reducing production costs. The tri-lobe shank and coarse thread spacing work together to provide exceptional resistance to vibration and loosening, making these hex head screws ideal for automotive components, electrical enclosures, and machinery where reliability is critical. Fully threaded for maximum grip length, these screws ensure uniform stress distribution and a secure hold in demanding industrial applications.

Specification Summary & Compliance

This screw features an M4 x 0.7 mm thread with a coarse spacing and right-hand direction. The 16 mm length has a tolerance of -0.55 to 0.55mm, ensuring precise fit. It is manufactured in compliance with DIN 7500 D for thread-forming screws and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations.