China Customized Captive Screw Manufacturers Suppliers Factory - Wholesale Service

Captive Screw Manufacturer | China Screw Factory | OEM/ODM screw customization factory

In the fields of machinery, electronics, automotive, and industrial equipment, captive screws are core components ensuring product safety and reliability. Whether in precision instruments, chassis panels, or maintenance parts for industrial machinery, high-quality captive screws effectively prevent screw loss, improving assembly efficiency and operational safety.

Huizhou Zeyao Hardware Products Co., Ltd. specializes in the production of custom fasteners, including screws, bolts, nuts, washers, pins, spacers, standoffs, rivets, CNC-milled parts, and CNC-turned parts. Our products find extensive application across various industries, such as automotive manufacturing, electronics, construction, aerospace, industrial machinery, medical devices, furniture, household goods, railway transportation, and more.

Rich Experience

Established in 2006, Huizhou Zeyao Hardware Products Co., Ltd. has accumulated over 18 years of expertise in manufacturing high-quality fasteners.

Quality Control

All our products comply with ROHS standards, and we maintain a stringent quality control system throughout the entire production process to ensure superior product quality.

Customized Services

We offer tailored solutions based on customer requirements, providing customized production according to specific drawings or samples.

Advanced Production Technology

Our production capabilities encompass cold forming, automatic lathing, automatic milling, and CNC machining, enabling us to meet diverse customer needs efficiently.

DIN 7964 Captive Panel Screws
Captive Screw, Panel Screw
Thread Size: Metric & Inch
Material: Carbon Steel, Brass & Stainless Steel
Finish: Zinc, Plain, Nickel, etc
Head shape:Cap Head
Drive:Hex...
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Cross Countersunk Head Captive Screw
Captive Screw, Countersunk Head Screw
Thread Size: Metric & Inch
Material: Carbon Steel & Stainless Steel
Finish: Black, Nickel, Zinc, etc.
Head Type: Countersunk Head
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Black Captive Screw
Black captive screw A captive screw (also known as a self-retaining screw or threaded captive fastener) is a specialized fastener designed to remain attached to an assembly even when fully...
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Slotted Head Captive Screw
The slotted head captive screw is designed to stay securely in place, the unique "captive" design ensures that the screw won't fall out, providing a secure and stable connection in a wide range of...
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Countersunk Head Captive Screw
The countersunk head captive screws are designed for the components that need to stay securely fastened over long periods. These screws provide excellent stability and strength. With materials...
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Pan Phillips Head Captive Screw
The Phillips pan head captive screws are designed with clever locking that prevents the screw from falling out after installation. A small-diameter shaft is added to it, which hooks onto the...
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Specification

Diameter d		M3	M4	M5	M6	M8	M10
Pitch P		0.5	0.7	0.8	1	1.25	1.5
Thread Length b		4	6	8	10	12	15
Dk	Max	5.6	8	9.5	12	16	20
Dk	Min	5.3	7.64	9.14	11.57	15.57	19.48
K	Max	1.8	2.4	3	3.6	4.8	6
K	Min	1.6	2.2	2.8	3.3	4.5	5.7
N	Metric	0.8	1.2	1.2	1.6	2	2.5
	Max	1	1.51	1.51	1.91	2.31	2.81
	Min	0.86	1.26	1.26	1.66	2.06	2.56
Ds	Max	2	2.8	3.5	4.5	5.5	7
Ds	Min	1.86	2.66	3.32	4.32	5.32	6.78
T	Min	0.7	1	1.2	1.4	1.9	2.4

Types of Captive Screw

The captive screws produced by our company mainly include the following types:

Slotted Head Captive Screw

The slotted head captive screw is designed to stay securely in place, the unique "captive" design ensures that the screw won't fall out, providing a secure and stable connection in a wide range of applications. This feature significantly reduces the risk of accidents or equipment failure caused by screw loss.

Countersunk Head Captive Screw

The countersunk head captive screws are designed for the components that need to stay securely fastened over long periods. These screws provide excellent stability and strength. With materials SS304 and SS316, they offer strong corrosion resistance, and are ideal for use in harsh environments, especially in areas exposed to moisture, chemicals, or extreme weather conditions.

Socket Head Captive Panel Screws

The stainless steel socket head captive panel screws offer a unique combination of strength, corrosion resistance, making them ideal for demanding applications in harsh environments. These screws are designed to stay securely in place, even under vibration or external forces, ensuring the stability and safety of your equipment or structure.

Advantages of Captive Screw

Prevention of Hardware Loss

They prevent hardware loss and enhance safety by reducing the risks of loose components in critical environments, such as aerospace, automotive, and medical fields.

Simplified Maintenance

Captive screws make assembly and disassembly easier, particularly in confined or hard-to-reach spaces.

Enhanced Safety

They reduce risks of mechanical failure or contamination caused by loose hardware, making them indispensable in sensitive industries.

Applications of Captive Screw

Server and Networking Equipment

In the IT and data center industries, captive screws are used to secure server enclosures, rack systems, and other networking equipment. Since these systems often require frequent maintenance, captive screws provide a convenient solution, allowing users to release the screws without fully detaching them from the panel.

Electrical Equipment

Many electrical devices, including control panels and power distribution units, use captive screws to secure access panels. This allows for easy access to internal components while ensuring the screws remain attached to the panel.

General Enclosures

In any assembly or enclosure where quick access and maintenance are necessary, captive screws offer the perfect solution. This includes automotive applications, industrial machinery, and medical equipment.

Customization Options for Captive Screws

Material Selection

Captive screws are available in various materials to suit different environments and applications:

Stainless Steel: Offers excellent corrosion resistance, ideal for marine, medical, or food-grade applications.
Titanium: Lightweight and strong, suitable for aerospace or medical uses.
Brass: Provides high conductivity and corrosion resistance, making it a good choice for electrical components.
Aluminum: Lightweight and corrosion-resistant, preferred in industries prioritizing weight reduction.

Head and Drive Style Options

The head and drive design of captive screws can be customized to enhance functionality and usability, with options including cap, pan, button, and countersunk heads, and drive types like slotted, Phillips, Torx, or hex.

Coatings and Finishes

Specialized finishes improve the performance and appearance of captive screws:

Black Oxide: Provides corrosion resistance and a low-glare finish.
Passivation: Enhances corrosion protection for stainless steel screws.
Electroplating: Adds protection and aesthetic appeal with materials like zinc or nickel.

Specialized Features

Certain applications require unique captive screw designs, such as:

Spring-Loaded Screws: Ensure controlled tension and consistent engagement.
Tamper-Resistant Heads: Provide security by deterring unauthorized disassembly.
Custom Lengths and Threads: Enable precise fitment for non-standard panel thicknesses or mating components.

Packaging and Shipping

Packaging	Plastic bag + outer carton + pallets
Shipping	We will help you to choose the best shipping way according to your detail requirements. By sea, by air, or by express, etc.

Our Certificate

productcate-1-1

FAQ

Q: What are the key differences between captive and non-captive screws?

A: Captive screws are designed to remain attached to a component even when loosened, typically featuring a reduced shank or retaining mechanism that prevents them from being completely removed. They are ideal for applications where preventing hardware loss is critical, such as in electronics, aerospace, and high-security settings. Non-captive screws, in contrast, are standard screws that can be fully detached. They are commonly used in general-purpose applications where hardware removal is necessary and the risk of loss is less significant.

Q: When should I choose captive screws over non-captive ones?

A: Captive screws should be chosen over non-captive screws when there is a need to prevent the screws from becoming completely detached during maintenance, assembly, or operation. They are ideal in situations requiring compliance with safety regulations, where secure fastening is critical to prevent accidents.

Q: What tools are required to install captive screws?

A: To install captive screws, specific tools are often required depending on the screw type and installation method. Universal hand installation tools are versatile for general captive screws, while specialized tools like flare-in installation tools or retainer flange tools are needed for specific designs, such as flare-in or panel-mounted captive screws.

Q: Can captive screws be customized for specific applications?

A: Yes, captive screws can be customized for specific applications. They can be tailored in terms of specifications, materials, finishes, and head styles to meet the exact needs of different industries. Custom options include corrosion-resistant materials like stainless steel, tamper-proof heads for added security, and various head designs such as cap head, pan head, and countersunk.

Q: Are captive screws suitable for outdoor or corrosive environments?

A: Yes, captive screws are suitable for outdoor or corrosive environments, provided they are made from the right materials, such as stainless steel grades AISI-304 or AISI-316, which offer high resistance to corrosion. Additionally, these screws are designed with features like retaining washers or flanges that prevent them from disengaging, even when loosened, making them ideal for harsh conditions.

Q: How do captive screws improve equipment security?

A: Captive screws improve equipment security by remaining attached to the component even when loosened, preventing loss during maintenance and reducing the risk of Foreign Object Damage (FOD). Their tamper-resistant designs, often featuring specialized drive styles, limit unauthorized access to sensitive equipment. The secure threaded connection provided by captive screws is crucial in high-stakes industries like aerospace and defense, ensuring equipment integrity.

We're professional captive screw manufacturers and suppliers in China, specialized in providing high quality products and service. We warmly welcome you to wholesale customized captive screw made in China here from our factory.

4 40 Captive Screw, Socket Head Captive Panel Screws