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Common head type of non-standard stainless steel screws

Non-standard stainless steel screws are different from the standard parts on the market, so when customizing non-standard stainless steel screws, how do we choose the type according to the head of the screw?

A. Countersunk, semi-sunk head

This type of head should be considered a lot of use, because after it is screwed into the product, it will not protrude from the surface of the product and affect the appearance of the product, which is mostly used on the outside of the product.

There are square necks or tenons under some heads to prevent the screws and nuts from turning when rotating. The head has a groove and a cross groove with smaller diameter specifications, and the diameter d is usually below M10.

B. Hexagon head

Hexagon head is also a common head type in screw fasteners. Some hexagon head fasteners also have a platform, a hole, a boss, and a flange face.

Hexagon head screws have high mechanical properties and are convenient for tightening with wrenches. Larger tightening torque can also be applied, and it is widely used. The supporting surface has bosses or hexagonal head screws with flange surfaces, and it also functions as a gasket. Enlarging the pressure surface has a better anti-loose effect. It can also be used to connect steel structures and important mainframe structures.

C. Pan head

The head of the pan head screw can have a slot, cross recess, quincunx, etc. It is mainly used to facilitate the use of tools for screwing. It is mostly used in products with low strength and low torque. It is generally used in household appliances and other small size products. Host product.

D. Big flat head, half round head

The function of the square neck and the tenon is to fix the screw, and the screwing device is to fasten the connection of the metal parts.

Generally, slotted round head screws are mostly used for occasions where the space is small and the force is not large, while the oblate heads are mostly used for connection and fixing of thin-walled parts and plate structures.

E. Square head screws

The square head screw has a large head area, which is convenient for tightening and turning the wrench. Larger tightening torque can be applied, and it is not easy to be bald. It is mostly used for relatively thick and frequently disassembled structures, but it is not suitable for parts that often need to be disassembled and moved.

F. Hexagon socket head, flower head

Its function is the same as that of the countersunk head, but the strength and tightening torque are greater than that of the countersunk head.

The above are the common head features of non-standard stainless steel screw fasteners. When customizing non-standard stainless steel screws, you can customize the corresponding non-standard screw head according to the actual use of the product.