Fasteners parts
2018-05-13 17:00:29
Fasteners parts It usually includes the following 12 parts
2. A fastener with no head buttocks at both ends. At the end of the connection, it must be screwed into the end of the part with the internal thread hole through the part with the through hole and then screwed the nut even if the two parts are tightened together into a whole. This type of connection is called a stud connection and is a detachable connection. Mainly used for one of the connected parts of a larger thickness, requiring a compact structure or due to the frequent removal of the bolt should not be used occasions.
3. Screws are also composed of the head and the screw two parts of a class of fasteners can be divided into three types of machine screws, set screws and special purpose screws. The machine screw is mainly used for a fastening connection between a part of a threaded hole and a part with a through hole. No nut fit This type of connection is called a screw connection and is also detachably connected to the nut Two fastening connections between the parts with through holes. The tightening of the 4 screws is mainly used to fix the relative position between the two parts. Special-purpose screws such as rings are used for lifting parts.
4. Nuts with internal thread holes are generally flat hexagonal cylinders are also flat cylindrical or flat cylindrical fit bolts, studs or machine screws for fastening the connection of two parts to make a whole.
5. The tapping screw is similar to the machine screw but the thread on the screw is a dedicated tapping screw thread. Used to fasten the connection of two thin metal components to make it a whole component on the need to make a small hole in advance because the screw has a high hardness can be directly screwed into the hole in the component to form a response in the internal thread The This connection is also a detachable connection.
6. Wood screw is also similar to the machine screw but the thread on the screw for the special wood screw thread can be directly screwed into the wood components or parts for a hole with a metal or non-metallic parts with a wooden component fastening connection Together. This connection also belongs to the detachable connection.
7. Washer shape was flat ring of a class of fasteners. Placed between the support surface of the bolt, screw or nut and the surface of the connected part Increased contact surface area of the connected part Lowering the pressure per unit area and protecting the surface of the connected part from being damaged. Another type of elastic washer can also function To prevent the nut back to the role of loose.
8. The ring is mounted on the machine, and the shaft or slot of the device acts to prevent the parts on the shaft or hole from moving left and right.
9. The pin is mainly used for part positioning with some parts can also be connected, fixed parts, transmission power or lock other fasteners used.
10. Rivets A type of fastener consisting of a head and a staple is used to fasten the connection of two parts or components with a through hole to make it integral. This type of connection is called rivet connection. Belong to non-detachable connection. Because the two parts that are connected together must break the rivets on the parts.
11. Assembly and connection The subassembly is a combination of a class of fasteners such as the supply of a machine screws or bolts, self-supply screws and flat washers or spring washers, lock washers combined supply connection refers to a special bolt A combination of nuts and washers is supplied with a class of fasteners such as high strength large hexagon head bolts for steel structures.
12. Punching nails Heterogeneous fasteners consisting of light and nails or nails are fixedly attached to a part or part by means of a welding method for further connection with other parts.