How Are Four-Pronged T-Nuts Manufactured? A Look into the Production Process

Four-pronged T-nuts are widely used in wooden furniture, cabinets, and sports equipment where strong and reliable threaded connections are required. Behind their simple appearance lies a precise and controlled manufacturing process.

As a professional T-nut manufacturer, Xinchi is glad to introduce how four-pronged T-nuts are made—from raw material to finished product—and how Xinchi Fasteners ensures high and stable quality for large-volume orders.

Stamping Process of Four-Pronged T-Nuts

The production of 4-prong T-nuts begins with stamping. Steel sheets—usually carbon steel or stainless steel—are stamped into the basic shape of the T-nut. This includes forming the base plate and punching the center hole.

Next, the four prongs are bent outward using precision tooling. These claws are what anchor the nut into the wood. Proper forming ensures the claws provide a stable grip strength and do not break or deform during installation.

At Xinchi Fasteners, we use progressive die stamping machines that ensure high precision and uniformity for each piece.

Thread Cutting in Four-Claw T-Nuts

After stamping, the center hole is threaded using automatic tapping machines. Depending on the application, thread sizes may vary—commonly M4, M6, M8, or M10.

Smooth and accurate internal threads are essential for proper bolt engagement and pull-out strength. Xinchi applies strict thread gauge inspections for every production batch to ensure smooth and compatible threads.

Heat Treatment for Four-Pronged T-Nuts (Optional)

Some four-pronged T-nuts, especially those used in heavy-duty applications, require extra strength. In such cases, heat treatment is applied to improve the mechanical properties of the material.

Heat-treated T-nuts offer better hardness, tensile strength, and resistance to deformation under pressure.

Xinchi provides optional heat treatment for customers needing enhanced performance, particularly in industrial or load-bearing furniture designs.

Surface Finishing for Four-Claw T-Nuts

To resist rust and enhance appearance, surface treatment is applied. Common surface finishes for four-pronged T-nuts include:

• Zinc-plated (blue-white or yellow): Ideal for indoor furniture and general use.
• Black oxide: A clean, low-reflective finish with basic protection.
• Dacromet, nickel-plated, or custom coatings Are Available for enhanced corrosion resistance.

Xinchi operates in-house plating facilities and collaborates with certified partners to ensure compliance with RoHS and REACH regulations, as required by international buyers.

Quality Inspection of Four-Pronged T-Nuts

Xinchi implements a full set of inspection procedures to ensure every four-pronged T-nut meets quality standards:

• Dimension check: Using digital calipers and fixtures to verify prong length, base diameter, and thickness.
• Thread inspection: GO/NO-GO gauges are used to confirm threading precision.
• Pull-out and torque testing: To verify grip strength and resistance under actual assembly conditions.
• Salt spray testing (for plated parts): To evaluate corrosion resistance of surface coatings.

By applying 100% critical dimension checks during production, we minimize defective rates and ensure reliability.

Mass Production Control for Four-Pronged T-Nuts

In large-volume production, consistency is key. Xinchi Fasteners maintains production stability through:

• Automated stamping and tapping lines
• Regular tooling maintenance and calibration
• Batch tracking and process records for every order
• Trained QC team monitors each step of production

Our plant is equipped with an ISO 9001 quality management system, enabling us to handle both bulk orders and customized specifications with fast lead times and stable quality.

Why Choose Xinchi Fasteners for Four-Pronged T-Nuts?

Xinchi Fasteners is a professional manufacturer specializing in wood fasteners, including four-pronged T-nuts, insert nuts, and barrel nuts. With over 15 years of experience, we offer:

• Full-size range from M4 to M10
• Support for standard and custom designs
• In-house stamping, threading, plating, and packing
• Stable delivery for OEM and export orders
• Free samples and technical support

XINCHI is a trustworthy fastener company, especially in furniture nuts. We have a factory,  founded in 2007. We are the designated fastener supplier to“STAPLE”. As a trusted fastener supplier, XINCHI offers a wide range of high-quality fasteners, including nuts, screws, bolts, rivets, and washers. If you would like to learn more about fasteners or are interested in wholesale fasteners, please do not hesitate to contact us. Our experienced and expert service team will reply as soon as possible.

If you’re looking for a reliable 4-prong T-nut supplier with strong production capabilities and consistent quality, Xinchi is your trusted partner in China.