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| Product Name | Projections on Head Spot Welding Bolts Weld Screws |
| Material | Carton steel,Stainless steel |
| Surface Finish | Yellow zinc, Blackened, Blue and white zinc, Dacromet，HDG |
| Colour | Yellow, Black, Blue White, White |
| Standard Number | DIN,ASME,ASNI,ISO,GB |
| Grade | 4.8 5.8 8.8 10.9 A2-70 |
| Diameter | M4 M5 M6 M8 M10 M12 |
| Thread form | Coarse thread, Fine thread |
| Place of origin | Hebei, China |
| Brand | Muyi |
| Pack | Box+cardboard carton+pallet |
| The product can be customized | |
| 1.Welding screws have a small spot on the head of the screw, and the screw is welded to the sheet metal using spot welding technology to fix it to form an external thread, so it is called a welding screw. 2.The main function of a screw is to use the normal force and friction of the thread to provide a more reliable longitudinal pulling force to join two objects together, or to provide a hanging point that can fix the position of an object. Because screws rely on thread grip, they can be more secure than nails that only rely on friction. They can also be removed or re-tightened at will and can be reused when necessary. |
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| Thread Spec D |
(M27) | M30 | M30 | (M33) | M36 | M36 | (M39) | (M39) | ||
| P | Pitch | 3 | 3.5 | 3.5 | 3.5 | 4 | 4 | 4 | 4 | |
| b | L≤125 | 60 | 66 | 66 | - | - | - | - | - | |
| 125＜L≤200 | 66 | 72 | 72 | 78 | 84 | 84 | 90 | 90 | ||
| L＞200 | 79 | 85 | 85 | 91 | 97 | 97 | 103 | 103 | ||
| d2 | min=nominal | 25 | 27 ② | 28 | 30 | 32 | 33 ② | 35 | 36 ② | |
| max | 25.052 | 27.052 | 28.052 | 30.052 | 32.062 | 33.062 | 35.062 | 36.062 | ||
| Sd | max | 50 | 55 | 55 | 60 | 65 | 65 | 70 | 70 | |
| Type A | min | 48.4 | 53.1 | 53.1 | 58.1 | 63.1 | 63.1 | 68.1 | 68.1 | |
| Type B and C | min | 49.38 | 54.26 | 54.26 | 59.26 | 64.26 | 64.26 | 69.26 | 69.26 | |
| r | Nominal | 10 | 10 | 10 | 16 | 16 | 16 | 16 | 16 | |
| max | 15 | 15 | 15 | 22.4 | 22.4 | 22.4 | 22.4 | 22.4 | ||
| min | 7.5 | 7.5 | 7.5 | 12.8 | 12.8 | 12.8 | 12.8 | 12.8 | ||
| e | Type A | max | 30 | 34 | 34 | 38 | 41 | 41 | 46 | 46 |
| min | 29.16 | 33 | 33 | 37 | 40 | 40 | 45 | 45 | ||
| Type B and C | max | 27 | 30 | 30 | 34 | 38 | 38 | 41 | 41 | |
| min | 26.79 | 29.79 | 29.79 | 33.75 | 37.75 | 37.75 | 40.75 | 40.75 | ||
1. Electronics industry: In the electronics industry, spring hooks are widely used, especially playing an important role in small electronic devices. For example, in devices such as mobile phones and computers, spring hooks are used to secure circuit boards and connect cables, ensuring the stability of the internal structure of the device and the reliability of the connection. In addition, spring hooks are also used for component positioning and fixation in precision instruments and household appliances, ensuring the stability and safety of the equipment during operation 2. Automobile manufacturing: In the field of automobile manufacturing, spring hooks also play an important role. Various components in a car, such as the engine, gearbox, suspension system, etc., cannot be separated from the fixation of spring hooks. For example, components such as exhaust manifolds and fuel pipes on engines are usually connected and fixed using spring hooks to ensure efficient engine operation
DIN937 hexagonal slotted thin nuts are mainly used for machines and equipment that require frequent disassembly, especially in situations where space is limited. This type of nut has six parallel short grooves at its bottom, which can be rotated using a wrench or pliers, making it easy to disassemble and install
DIN582 lifting ring nuts are mainly used to connect chains and steel wire ropes, and can also be used for lightweight lifting. The hanging ring nut refers to a component that is screwed together with a bolt or screw to provide a fastening effect, and is a necessary component for all production and manufacturing machinery.
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Flat cone head rivets, due to their enlarged head, are corrosion-resistant and commonly used in ship hulls, boiler water tanks, and other areas with strong corrosion resistance The riveting occasion
1. Cross groove large flat head self tapping screw: The head of the cross groove large flat head self tapping screw is designed as a large flat head, which increases the force area and makes the screw less likely to be damaged when subjected to large torque 2. Easy to install and not easily deformed: Due to its large flat head design, this type of screw is more convenient to install and has the characteristic of not easily deformed, so it has been deeply loved by people in recent years 3. Corrosion resistance: Especially the cross groove flat head self tapping screws made of austenitic stainless steel A2 have super strong corrosion resistance and can resist air, water, acid, alkali salt or other corrosive media. They are suitable for fields such as medical and chemical industries that require corrosion resistance
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1. Fixation and connection: The main function of U-bolts is to fix and connect various equipment or objects. Due to its unique U-shaped design, it can firmly secure tubular or sheet-like objects, ensuring that they do not loosen or move during use. For example, in the automotive industry, U-bolts are commonly used to connect and secure steel plate springs to maintain the stability of the car chassis 2. Able to withstand multiple forces: U-bolts can withstand tensile and shear forces, and have strong vibration resistance. This means that it can maintain stability under different stress conditions, making it suitable for applications that require high stability. For example, in bridge, tunnel, and railway construction, U-bolts are widely used to ensure the stability and safety of the structure In summary, U-bolts play an important role in fixing, connecting, withstanding various forces, space utilization, and wide application fields. Its design and material selection make it one of the indispensable fasteners in many industries.
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Hexagonal embedded locking nut is a type of fastener that can lock threads. It is widely used in fields such as mechanical manufacturing, automotive manufacturing, and electronic equipment. In high-speed mechanical equipment, locking nuts can effectively prevent thread loosening and ensure the safe and stable operation of the equipment.
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