Half-round head screws are indispensable components in the mechanical industry. Half-round head screws fasteners come in various specifications, appearances, and material classifications. So, what are their respective functions and characteristics? Let's briefly analyze the head types and characteristics of different half-round head screws.

Half-round head screws are also called cross-recessed pan head screws and cross-recessed round head screws. The names are different, but the meaning is the same. They are all cross-shaped, with a round head, also called a half-round head.

Half-round head screws generally come in iron and stainless steel. The market price of iron is much cheaper than stainless steel. Iron half-round head screws are generally made of A3 steel. A3 steel refers to low, medium, and high carbon steel. There are also many types of stainless steel, including stainless steel SUS201, SUS304, SUS316, etc. In addition, some iron half-round head screws have higher requirements for hardness and strength and need to be quenched and heat-treated. Burning the round head screw on the fire. Increase its strength and hardness grade. To achieve a certain strength.

There are countless types of half-round head screw fasteners, and each product uses different screws. Because a customer previously asked about the difference between round head screws and large flat head screws, let's have a simple chat:

The difference between half-round head screws and large flat head screws is actually the difference in the screw head. The head of a large flat head screw is larger than that of a round head screw, and the bearing area is also larger. During use, the connection between the product and the screw head is not easily damaged. In addition, large flat head screws also have the advantages of easy installation and no deformation, and have been loved by everyone in recent years.

Round head screws are often used on some circular or arc-shaped surfaces. After deep hole installation, they are on the same plane as the product and are often installed on exposed flat surfaces. Half-round head screws look better than large flat head screws, but the appropriate screw head type should be selected according to the actual usage scenario.

There are also many types of half-round head screws. According to the thread, there are machine threads and self-tapping threads. According to the screw name classification, there are round head screws, round head self-tapping screws, triangular self-tapping screws, round head self-tapping self-drilling screws, etc.

Half-round head screws are often used in machinery. It has the characteristics of tightening, disassembly, and not easy to slip. The hex wrench is generally a 90° bent head, with one end of the bent head longer and the other shorter. Holding the long side can save a lot of effort and better tighten the screws. The long end has a round head (similar to a spherical hexagonal cylinder) and a flat head. The round head can easily insert into the screw hole for quick disassembly. The production cost of the external hexagon is much lower than that of the internal hexagon. It also has a thinner screw head (the force-bearing position of the wrench) than the internal hexagon, and some places cannot be replaced by the internal hexagon. In addition, machines with low cost, low power strength, and low precision requirements use far fewer half-round head screws than external hexagons.