Custom Self-Clinching Screws

Joyear supplies custom self-clinching screws designed to create permanent threaded fastening points in sheet metal components.

Unlike conventional screws that rely on cutting threads into the panel, self-clinching screws are installed by pressing the fastener into a prepared hole, allowing the surrounding sheet material to mechanically lock around the clinching feature.

This creates a strong and repeatable fastening solution for thin metal assemblies where welding, tapping or loose hardware may not be suitable.

Self-clinching screws are specialized fasteners designed for permanent installation into sheet metal.

During installation:

• A precision hole is prepared in the metal panel.
• The screw is pressed into position using controlled installation force.
• The knurled clinching area engages with the parent material.
• The screw becomes permanently retained in the sheet metal.

Advantages:

• No welding required
• No loose nuts needed
• Reduced assembly time
• Consistent positioning
• Suitable for high-volume production

 

Self-clinching fasteners are commonly selected for sheet-metal assemblies requiring permanent threaded mounting points.

Self-clinching performance depends on the relationship between fastener hardness and parent sheet material.

Carbon Steel Panels

Suitable for:

• Industrial equipment
• Electrical cabinets
• General sheet metal assemblies

Stainless Steel Panels

Suitable for:

• Outdoor equipment
• Corrosion-resistant applications

Aluminum Panels

Suitable for:

• Lightweight structures
• Electronics housing

JOYEAR provides a wide range of surface finishing solutions to meet demands for corrosion protection, wear resistance and aesthetic requirements. Presented below are processes including zinc plating, nickel plating, passivation and black oxide, together with their respective application scenarios and performance advantages.

Please notify the JOYEAR team in advance should you need special plating or custom surface treatments. We will customize finishing processes in accordance with service conditions and acceptance criteria.

Zinc Plating

For:

General corrosion protection

Industrial environments

 

Nickel Plating

For:

Appearance

Wear resistance

 

Passivation

For:

Stainless steel corrosion protection 

Black Oxide

For:

Dark appearance

General protection

Custom self-clinching screws suit a variety of sheet metal assembly scenarios and deliver prominent advantages for thin sheet connections. Below we illustrate their specific applications, assembly features and practical value in electrical enclosures, industrial equipment, communication equipment and automation systems by sector.

Electrical Enclosures

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Custom Self Clinching Screws are widely used in sheet metal assembly of control cabinets, metal boxes and electronic housings. When pressed into thin sheets, they form firm internal threads without welding and will not damage housing surfaces. They enable easy assembly and reliable connections for convenient maintenance, keeping electrical enclosures stable under normal working conditions and meeting fastening demands of thin-metal electric control housings.

Industrial Equipment

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Self Clinching Fasteners are applied to machine covers, metal frames and equipment panels in industrial equipment. After clinching, they bond tightly with sheets and deliver good torsion and tensile resistance. They streamline sheet metal assembly and boost mass production efficiency. Resisting vibration during equipment operation, they stay secured over time and maintain stable structure of equipment housings.

Communication Equipment

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Self Clinching Screws are suitable for communication products such as server chassis and telecom cabinets. Such devices have compact internal space, and these fasteners realize dependable threaded joints on thin sheets without occupying much room. Featuring excellent vibration and loosening resistance, they firmly secure chassis modules and satisfy strict reliability requirements for long-time continuous operation of communication equipment.

Automation Systems

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Self Fixing Screws are used for sheet metal components of robotics equipment and control systems in automation systems. Continuous vibration occurs during equipment operation. They create stable threads on thin sheets to prevent loosening caused by vibration. Components can be easily disassembled and serviced, ensuring solid joints for sheet metal parts and stable operation of control systems.

Provide a quote, confirm the order quantity, and include all relevant information.

Like the terms of payment, the terms of trade, the kind of packaging, etc.

When manufacturing the goods, adhere precisely to the original drawings and samples.

After a final inspection, it was meticulously packaged and delivered to the customers.

Custom Self-Clinching Screws have a highly recognizable appearance. They generally feature a short, stout T-shaped or cap-shaped profile, consisting of a low-profile head, an under-head clinching zone, and an externally threaded shank. The head may be flat, countersunk, pan, hex, or flanged. Their most distinctive feature is the ring of knurling, straight knurl, diagonal knurl, serrations, or annular grooves beneath the head, together with the absence of the pointed tail typical of self-tapping screws; the threaded end is usually flat and chamfered. Most products have no drive recess, because they are installed by pressing rather than by rotation. Materials and surface finishes are also highly varied, such as plain stainless steel, zinc-plated carbon steel, black oxide, Dacromet, and anodized aluminum.

The core function of this unique design is to achieve self-clinching. When the screw is pressed into a pre-punched hole in thin sheet metal, the under-head teeth force the sheet material to undergo cold plastic deformation. The metal flows into the tooth grooves and forms a mechanical interlock with the screw. This provides anti-rotation and torque resistance, push-out and pull-out resistance, and permanent locking, eliminating the need for tapping, welded nuts, or blind riveting. Different tooth forms emphasize different properties: knurling mainly resists rotation, while annular grooves mainly resist pull-out. After installation, the screw becomes a permanent stud, and its external threads can be repeatedly assembled and disassembled, making it particularly suitable for reliable fastening in thin sheet metal.

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