Custom Bolt and nut Manufacturer
- Provide One-Stop Solutions Based on Your Special Requirements
- Offers Customized Services for Various Types of Bolts and Nuts
- Experienced in Serving Over 500 Oversea Clients
Customization Starts Here
From standard bolts and nuts to custom fasteners, from micro precision parts to complex structures — We customize all sorts of bolts and nuts according to your requirements.
Bolts Types: Hex Bolts / Hex Socket Bolts / Flange Bolts / Stud Bolts / Anchor Bolts / Copper Bolts / U-Bolts / Eye Bolts / Threaded Rods
Nuts Types: Long Nuts/ Flange Nuts / Lock Nuts / Nylon Nuts / Y Nuts / Rivet Nuts and Special Model
Material: Carbon Steel / Stainless Steel / Alloy Steel / Copper / Iron
Our custom bolts and nuts
- Customizable Options: Head / Drive / Thread / Material / Finish / Process
- Size: Manufactured exactly per drawings for unique assembly needs
- MOQ: Small-batch customization available
- Standard: Supports coarse / fine thread & Imperial and metric system
- Material: Carbon Steel / Stainless Steel /Aluminum
- Strength: A2 - 50 / 70 / 80 & A4 -70 / 80
- Finish: Anodizing / Mcro-arc oxidation / Natural cleaning / Electrophoresis
- Anti-corrosion: Excellent corrosion resistance
- Safety: Biocompatible and non-toxic
- Material: Carbon Steel / Stainless Steel /Aluminum
- Finish: Anodizing / Hard anodizing / Sandblasting / Natural color
- MOQ: Small-batch customization available
- Anti-corrosion: Excellent resistance to atmospheric corrosion
- Material: SUS304, SUS316, 316L, 410, 430
- Surface Treatment: Passivation / Polishing / Mirror Finish / Sandblasting / Electrophoresis / QPQ / Zinc-nickel Alloy
- Anti-corrosion：Excellent corrosion resistance
- Durability：High Strength , Durable and Aesthetic
- Material: Carbon Steel / Stainless Steel / Alloy steel, etc.
- Process: Molding / Cold Heading / Turning / stamping / forging
- Type: Long / Flange / Lock / Nylon / Y / Rivet and Special Model
- Hardness: Hardenable to grade 8 and above
- Type: Flat / Lock / Square / Serrated / Wave
- Material: Carbon Steel / Stainless Steel / Copper / Aluminum / Alloy, etc.
- Function: Disperse the pressure & Reduce vibration
- Application: Used to place between a connecting piece and a nut
Fully Customizable
Custom Bolts and Nuts for Your Projects
- Material: Carbon Steel / Stainless Steel / Copper / Alloy Steel / Iron
- Surface Treatment: Anodizing / Polishing / Zinc / Black Oxide / Phosphating / Passivation
- Bolts Types: Hex Bolts / Hex Socket Bolts / Flange Bolts / Stud Bolts / Anchor Bolts / Copper Bolts / U-Bolts / Eye Bolts / Threaded Rods
- Nuts Types: Long Nuts/ Flange Nuts / Lock Nuts / Nylon Nuts / Y Nuts / Rivet Nuts and Special Model
Our Factory's Machines
Thread Rolling Machine
High-efficiency thread rolling machine — for stronger and more precise threads.
Single-die Machine
Precision single-die machine — built for efficient standard bolts production.
Multi-Station Machine
Multi-station machine — made for complex and custom bolts and nuts.
Polishing Machine
An automated device used to improve the surface smoothness and appearance of bolts and nuts.
Salt Spray Testing Machine
A laboratory device used to evaluate the corrosion resistance of metals and coatings.
Brinell Hardness Tester
A Brinell hardness tester for bolts measures the hardness of materials to ensure strength and durability.
Reliable Quality Control System
Screw Go/No-Go Gauge
A measuring tool used to verify whether a bolt thread meets standard dimensions. The “Go” gauge checks if the thread is within tolerance, while the “No-Go” gauge ensures it is not oversized or undersized.
Hardness Test
Used to measure the material hardness of bolts, evaluating strength and wear resistance to ensure compliance with design and application standards
Bolts Spectrum Test
Uses spectral analysis to determine the chemical composition of bolt materials, ensuring they meet standards and customer specifications.
Plating Test
Used to measure the thickness, adhesion, and uniformity of the bolt’s surface coating to ensure the plating meets quality standards.
Bolts Fatigue Test
Used to evaluate the durability of bolts under repeated loading or long-term stress, testing their fatigue strength and service life.
Salt Spray Test
Simulates salt spray environments to evaluate the corrosion resistance of bolt surfaces and the durability of their coatings.
Packaging and Shipping
The goods are packed in transparent plastic bags and sturdy cartons, and transported on special export wooden pallets. This packaging is suitable for land, sea and air transportation, ensuring the safe and timely delivery of goods to customers.
About Us
HK TONGLIN INTERNATIONAL LIMITED was established in 2011, specializing in processing of fasteners and CNC machining parts business, which has own processing factory located in the Chinese mainland.
Equipped with advanced production machinery (including multi-station cold heading machines, thread rolling machines, and custom mold equipment) and a full range of testing instruments (torque testers, hardness testers, salt spray and hydrogen embrittlement testers), we ensure stable quality, precise tolerance control, and excellent corrosion resistance for every product.
Our products have been widly used in home appliance, furniture, mechanical equipment, electronics, construction, recreational facilities, medical devices, auto parts, aero industry etc. The products were exported to Europe, Africa, Middle East, Asia and other areas.
Our vision is to offer quality products and the most suitable solution to customers at a reasonable cost. Finally become a long-term partner of clients.
Authoritative certification
From raw material sourcing to finished product delivery, every stage is under strict quality control.
These certifications are not only a testament to our technical capability, but also a firm commitment to providing you with stable, reliable, and high-standard fastening solutions.
Real feedback
What our clients are saying.
A Customer in Africa
A Client in Middle East
A Customer in Asia
A Client in Europe
Most Popular Questions.
Have you ever encountered these problems before?
We can provide you with perfect answers to problems that your supplier cannot solve.
We strictly implement the ISO system, conduct full process quality inspection and sampling, and provide SGS and ROHS reports; Ensure batch consistency.
Using quality raw materials, material certification and testing reports can be issued.
Adequate equipment production capacity, improved production processes, flexible inventory, and support for small batch and customized fast shipments.
Provide a tiered pricing mechanism, support OEM/ODM, emphasize high cost-effectiveness and long-term cooperation stability.
Support English technical communication, able to understand overseas customer drawings and standards;
Provide professional after-sales service.
We can provide customized solutions for different fields such as aviation, medical, outdoor, electronics, etc.
We offer 24/7 consulting services and free sample making.
With the advanced equipment and 15+ years of industry experience, we could meet your unique custom needs with an affordable cost.
- +86 135 2584 5160
- Mon - Fri: 9:00am - 6:00pm
- the Chinese mainland
Get Samples Now !
View samples of our bolts and nuts products. Seeing the quality of our products with your own eyes, let’s officially start our cooperation.
