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Threaded rods
Premium tooth bar screw grade 8.8, 10.9, 12.9 Material: 45 # 40Cr, 35CrMoA, 42CrMo B7、 Double headed, fully fastened, various lathe precision machined special-shaped parts. Surface treatment: black, electroplated zinc, blue white, silver white, hot-dip galvanized, Dacromet, etc. Screw, also...
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Premium tooth bar screw grade 8.8, 10.9, 12.9
Material: 45 # 40Cr, 35CrMoA, 42CrMo B7、 Double headed, fully fastened, various lathe precision machined special-shaped parts.
Surface treatment: black, electroplated zinc, blue white, silver white, hot-dip galvanized, Dacromet, etc.
Screw, also known as thread bar or fully threaded bolt, is mainly used for connecting, transmitting, and supporting in mechanical equipment
Has the following characteristics:
Connection function: Screw teeth usually do not have a head, and both ends have chamfers. It is a type of fastener with full thread on a threaded column. It can be used as a connecting element between thicker components, for example, when two thicker plates or parts need to be connected together, using screw teeth and nuts for fastening can provide reliable connections and ensure stable relative positions between components. Transmission function: capable of converting rotational motion into linear motion, or converting linear motion into rotational motion. When the screw thread is matched with a nut with corresponding threads, the rotation of the screw thread can cause the nut to move in a straight line along the axis direction of the screw thread, achieving precise displacement transmission. On the contrary, when the nut moves in a straight line, it can also drive the screw teeth to rotate.
This transmission method is widely used in many mechanical equipment, such as the feed system of machine tools and the conveying device of automated production lines, which can achieve precise position control and motion transmission.
Support function: Due to the strength and rigidity of the screw teeth, they can also serve as support in some structures. For example, in certain frame structures or cantilever structures, screw teeth can serve as support members to withstand certain axial loads and lateral forces, helping to maintain the stability and integrity of the structure.
Multiple thread types: There are different thread types for screw threads, such as triangular thread, trapezoidal thread, rectangular thread, serrated thread, etc. Each thread type has its specific profile and purpose. For example, trapezoidal tooth thread processing is relatively simple, and the tightness of the nut and screw can be adjusted according to the depth of the teeth. The internal and external threads are tightly adhered to the conical surface and are not easy to loosen. The process is good, the root strength is high, and the alignment is good. It is commonly used for transmission threads; The serrated tooth thread has an unequal trapezoidal tooth shape, with a small tooth flank angle on the working surface and a large tooth flank angle on the non working surface. The external thread root has a large rounded corner, which can reduce stress concentration. It also has the characteristics of high efficiency in rectangular thread transmission and high strength of trapezoidal thread root, and is suitable for one-way force transmission threads.
Wide application fields: Screw teeth are widely used in many fields such as electromechanical seismic resistance, aerospace industry, mechanical and chemical industry, building decoration, furniture manufacturing, etc. due to their functions and characteristics. In the field of construction, it can be used for ceiling installation on construction sites, etc; In the field of furniture, it is commonly used to connect various components of furniture; In the field of mechanical manufacturing, it plays an important role in various machine tools, automation equipment, and transmission devices.
| Mon | M4 | M5 | M6 | M8 | M10 | M12 | M14 | M16 | M18 | M20 | M22 | M24 | M27 | M30 | M33 | M36 | M39 | M42 |
| p | 0.7 | 0.8 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2 | 2.5 | 2.5 | 2.5 | 3 | 3 | 3.5 | 3.5 | 4 | 4 | 4.5 |
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