Screws with a semicircular head

What is a semi-circular screw and why is it needed

A semicircular screw is a fastener with a thread and a semicircular head that has a slot or slot for a screwdriver. It is used to connect metal, wooden, and plastic parts.
The main purpose of such a screw is to provide reliable and durable fastening in places where even load distribution is important. It is widely used in mechanical engineering, furniture production, construction, and other areas. Thanks to its semi-circular head, the screw presses the surface of the material evenly, reducing the risk of damage.

Design features of semi-circular head screws

Semi-circular head screws have several important design features:
Head shape. The semicircular head provides good pressure distribution and ease of installation.
Types of threads. They can have metric, inch, or self-tapping threads depending on the application.
Materials. They are made of carbon and stainless steel, brass, and can also have a zinc or oxidized coating to protect against corrosion.
They are distinguished from other types of screws by a special head shape that provides an aesthetic appearance of the fastener and even pressure on the material.

Varieties of semi-circular head screws

There are several basic standards for the manufacture of such screws:
DIN 7985 - screws with a semi-circular head and a locking nut that prevents unintentional loosening.
DIN 84 - classic straight slotted screws, which are often used in precision machinery.
DIN 7500 C - self-tapping screws that do not require preliminary threading.
Each of these variants has its own purpose and is used in the respective industries.

Applications of Semi-circular head screws

Semi-circular head screws are widely used in a variety of applications:
Construction. They are used for the installation of metal structures, cladding, and fastening of wooden elements.
Mechanical engineering. They provide a reliable connection of parts in mechanisms and assemblies.
Furniture industry. Used for fastening fittings, assembling cabinet furniture, where a neat appearance is important.
Due to their versatility and durability, these screws remain popular in manufacturing and construction.

Advantages of buying Semi-Circular Head Screws from Dinmark

1️⃣ Convenient fastening solution: the largest range of all types of fasteners in Ukraine.
2️⃣ Savings with every order: the more purchases you make, the better the price for the product.
3️⃣ Bonuses for online purchases: an additional -2% discount on all products when ordering through the website.
4️⃣ Fast delivery at your doorstep: if the goods are in stock, individual orders are also possible.
5️⃣ Professional support: a team of experts is ready to help you choose the right hardware quickly and efficiently.
Get even more benefits when shopping with DINMARK!

Frequently asked questions

Which are the best semi-circular head screws?

The choice depends on the material of the product, the load and the operating conditions. Stainless steel is recommended for wet environments and galvanized screws for dry environments.

How do I select and order Semi-Circular Head Screws?

To choose and buy the right semi-circular head screws, you should consider the material, thread type, dimensions, coatings, and standards. Carbon steel is an affordable option but requires anti-corrosion protection, stainless steel is suitable for wet conditions, and brass is used for decorative and electrical purposes. In terms of thread type, metric threads are suitable for mechanical engineering and furniture production, self-tapping threads are suitable for working with wood and plastic, and fine threads provide increased strength. Diameter and length are selected depending on the parts to be joined: popular sizes include M3, M4, M5, M6, M8, and lengths from 6 to 100 mm. The choice of coating depends on the operating conditions: galvanized screws are resistant to corrosion, blackened screws are suitable for interior work, and nickel-plated screws are used in furniture production. You should also consider the product standard: DIN 84 is the classic version for precision mechanisms, while DIN 7500 C is a self-tapping screw for various materials. To order the right option from Dinmark, just select and buy Semi-circular head screws in the catalog, add it to your shopping cart and place an order.

Hexagonal head screws to buy in 2025?

Models according to DIN 7985, DIN 84 and DIN 7500 C are popular due to their quality and versatility.
Place your order on the Dinmark website now!