Non-standard stainless steel screws are non-standard fasteners, which are different from standard fasteners on the market. When customizing non-standard stainless steel screws, how do we choose the type according to the head of the screw?
1. Countersunk screws
The head type of countersunk head screws should be considered to be very used, because after being 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. Some have square necks or tenons under the heads to prevent the screws and nuts from turning when they are turned. The head has slotted, Phillips diameters which are small, typically a diameter d more in M10 or less.
2. Hexagonal screws
Hexagonal screws are also a common head type in screw fasteners. Some hexagonal 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 hexagon head screws with flange surfaces, and it also has the function of gaskets. Enlarging the pressure surface has a better anti-loose effect. It can also be used to connect steel structures and important mainframe structures.
3. Pan head screws
The head of the pan head screw can have a slot, cross recess, quincunx, etc., mainly for the convenience of using tools to tighten, and it is mostly used on products with low strength and low tightening torque. Generally, it is used in household appliances and other small size products. Host product.
4. Big flat head screw
The semi-circular head, square neck and tenon are used to fix the screw, while the screwing is to fasten the connection of the metal parts. Generally, slotted round head screws are generally used for occasions where the space is small and the force is not large, while the oblate heads are mostly used for the connection and fixing of the plate structure of thin-walled parts.
5. 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.
6. Hexagon socket head and flower-shaped angle head screws
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.
