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One of the outstanding features of our Captive Screw is its compatibility with a wide range of materials. Whether you are working with metal, plastic, wood, or composite materials, our captive screw can be used effectively. This versatility makes it a popular choice among engineers and designers. Another feature is its low-profile design. The head of the captive screw is relatively thin, which is beneficial in applications where space is limited. It allows for a more compact assembly without sacrificing the strength and functionality of the connection. Our captive screw also has a high resistance to fatigue. It can withstand repeated cycles of tightening and loosening without losing its performance or integrity.
The advantages of our Captive Screw are significant in various industrial and commercial settings. Its compatibility with different materials reduces the need to stock multiple types of screws for different applications, saving both time and money. The low-profile design is especially useful in applications such as electronics, where space is at a premium. It enables the creation of more compact and lightweight products. The high resistance to fatigue ensures that the captive screw can be used in applications where frequent maintenance or adjustment is required, such as in machinery or equipment that is regularly serviced. Additionally, the ease of installation and the anti-loss feature of the captive screw contribute to increased productivity and reduced downtime.
Our Captive Screw is applicable in a diverse range of industries. In the furniture industry, it is used to assemble various pieces of furniture, such as cabinets, tables, and chairs. The low-profile design and compatibility with different materials make it an ideal choice for creating aesthetically pleasing and functional furniture. In the electronics industry, it is used to secure circuit boards, enclosures, and other components. The ability to work with different materials and the anti-loss feature are crucial in preventing damage to delicate electronic parts. In the marine industry, captive screws are used in the construction and maintenance of boats and ships. Their corrosion resistance and high load-bearing capacity make them suitable for withstanding the harsh marine environment.
1. Can the captive screw be tightened with a power tool?
Yes, our captive screw can be tightened with a power tool, such as a screwdriver or a wrench, depending on the head style. However, it is important to use the appropriate tool and set the correct torque to avoid over-tightening and damaging the screw or the components.
2. What is the difference between a captive screw and a regular screw?
The main difference is that a captive screw has the shank attached to the head and cannot be completely removed from the head, while a regular screw can be fully detached. This makes the captive screw more suitable for applications where preventing the loss of the screw is important.
3. Are there any special storage requirements for the captive screw?
It is recommended to store the captive screw in a clean and dry environment to prevent corrosion. If the screws are made of metal, it is advisable to keep them away from moisture and corrosive substances. You can also store them in a container or a box to prevent them from getting mixed with other small parts.
4. Can the captive screw be used in applications with high humidity?
Our captive screws made from corrosion-resistant materials such as stainless steel can be used in applications with high humidity. However, if the humidity is extremely high or there is continuous exposure to water, additional protective measures such as applying a protective coating may be necessary.
5. How do I remove a captive screw if it is stuck?
If the captive screw is stuck, you can try using a penetrating oil to loosen it. Apply the oil to the thread and let it sit for a while. Then, try to turn the screw gently using the appropriate tool. If it still does not move, you may need to use more force or consult a professional for assistance.

| Type | [ M ]Material | [ S ]Surface Treatment |
| ZLRLM | Alloy Steel | Electroless Nickel Plating |
| ZLRLB | 303 Stainless Steel | - |
| Part Number | - | L |
| ZLRLB3 | - | 10 |
| Part Number | L | D | A | |||||||
| Type | M (Coarse) | |||||||||
| ZLRLM ZLRLB | 3*0.5 | 6 | 10 | 5.5 | 10 | |||||
| 4*0.7 | 6 | 10 | 16 | 7 | 16 | |||||
| 5*0.8 | 10 | 16 | 20 | 8.5 | 20 | |||||
| 6*1.0 | 10 | 16 | 20 | 25 | 30 | 10 | 30 | |||
| 8*1.25 | 20 | 25 | 30 | 13 | 36 | |||||
| 10*1.5 | 20 | 25 | 30 | 40 | 16 | 40 | ||||
| Shape Style | Knurling | Mounting Hole Shape | No | Shape | Hand tightening bolt |
|---|---|---|---|---|---|
| Thread Ridge Type | Metric coarse | Tip Shape | Flat End | Additional Shape | Standard |
| Sale Unit | Individually Sold (Min. 1 Pc) | Application | Standard | Material Certificate | Available |
Frequently asked questions about this product (FAQ)
Q:What are the main types of bolt materials currently sold by Zhengchen?
A:Steel, stainless steel, aluminum alloy, titanium alloy, resin, etc.
Q:What are the main strength grades of steel hexagonal bolts currently sold by Zhengchen?
A:8.8 level, 10.9 level, 12.9 level.
Q:What are the main strength grades of stainless steel bolts currently sold by Zhengchen?
A:A2-50,A2-70,A4-70,A4-100。
Q:What are the main types of special bolts currently sold by Zhengchen?
A:Pin bolts, eyebolts, protruding head bolts, contour bolts, etc.
Q:Does Zhengchen sell English bolts?
A:Yes, there are four categories in total, all of which are agency products.
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