Non - standard parts including mechanical parts
(1) bolt: a type of fastener consisting of two parts of the head and screw. It is necessary to fit with the nut for fastening and connecting two parts with through holes. This form of connection is called a bolt connection. If the nut is swirled down from the bolt, the two parts can be separated, so the bolt connection is a detachable connection.
(2) stud: a class of fasteners with no head and only both ends with thread. When connecting, one end of it must be screwed into the part with inner thread hole, and the other end passes through the part with through hole, then screw up the nut, even if the two parts are fastened and connected to see the whole. This form of connection is called a stud connection, and it is also a detachable connection. It is mainly used to be connected parts with a large thickness, compact structure, or frequent disassembly, which should not be used for bolt connection.
(3) screw: a fastener consisting of two parts of head and screw, which can be divided into three kinds according to usage: machine screws, set screws and special purpose screws. The machine screw is mainly used for a part with a tight screw hole, and a fastening connection between a part with a through hole and no need of nut matching. The tightening screw is mainly used to fix the relative position between the two parts. Special use screws, such as ring screws, are used for hoisting parts.
(4): nut with inner thread hole, the shape is flat six prism, there is a flat square cylindrical or flat cylindrical, with bolts, studs or machine screws for fastening connecting two parts, make it become a whole.
(5) self tapping screw: similar to the machine screw, but the screw thread on the screw is a special screw for the self tapping screw. It is used for fastening and connecting two thin metal members to make it a whole. The holes on the members need to be made in advance. Because the screw has higher hardness, it can be directly screwed into the Kong Zhong of the component, so that the internal thread can be formed in the component. This type of connection is also a detachable connection.
(6) wood screw: also similar to machine screw, but screw thread on special screw can be directly screwed into wooden component. It is used to fasten a metal part with through hole to a wooden component. This connection also belongs to a detachable connection.
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Address:Jiashan County, Zhejiang Huimin Road Lushan Road 2, Lane on the 8th