DIN 7516 Self-Tapping Screw with Round Head, Form A

The German standard DIN 7516 covers self-tapping screws with a head fitted with a cross recess or a Torx socket. The fastener is a metal shank with a special thread: there is no need to pre-tap a thread in the hole before driving it in, and tightening ensures a secure fixation.

Form A features a round head in a cylindrical design, which rises above the surface when the screw is driven into the material. The advantage of this fastener is quick installation.

Features and materials

Carbon steel is used to manufacture these fasteners, and it can additionally be given a zinc coating for improved corrosion protection. The screws can also be made from austenitic stainless steel A2 and A4 — such fasteners have enhanced corrosion resistance and can be used in aggressive environments. The cylindrical head sits tightly against the material, which prevents the screw from loosening on its own.

This type of fastener has the following set of technical characteristics:

• Nominal thread diameter ranges from M3 to M8.
• The length of the metal shank can range from 6 to 50 mm.
• The head diameter can range from 5.6 to 14.5 mm.
• The head height can reach up to 2 mm.
• Fasteners with similar parameters are manufactured to the DIN 7513 standard.

This type of fastener is widely used in industry and construction. Its primary purpose is joining sheet materials: it can be used for fastening metal, plastic, and more. Self-tapping screws can be used for installing siding, securing various roofing materials, and other applications.

Sale at FLOK

FLOK supplies this type of fastener product in small and large wholesale lots. One-off or regular deliveries are available, shipped to any region of the country. We can also help select equivalents and suitable sizes for a specific task.