Custom Screw Manufacturer
- Provide Screw Solutions Based on Your Special Requirements
- Offers Customized Services for Various Types of Screws
- Experienced in Serving Over 500 Oversea Clients
Customization Starts Here
From non-standard screws to titanium fasteners, from micro precision parts to extra-long structures — We customize every screw according to your design.
Custom-made from drawings or samples — turning your design into reality.
Our Custom Screws
- Customizable Options：Head / Drive / Thread / Material / Finish / Process
- Size：Manufactured exactly per drawings for unique assembly needs
- MOQ：Small-batch customization available
- Design：Supports proprietary drive/thread designs with authorization
- Material: Gr1 / Gr2 / Gr5
- Strength: HRC 24-28 / HRC 32-36
- Finish：Anodizing / Mcro-arc oxidation / Natural cleaning / Electrophoresis
- Weight：Lightweight yet strong
- Anti-corrosion：Excellent corrosion resistance
- Safety：Biocompatible and non-toxic
- Material： 1100 / 6061 / 6063 / 7075
- Finish：Anodizing / Hard anodizing / Sandblasting / Natural color
- Weight：Extremely lightweight
- Conductivity：Good electrical and thermal conductivity
- 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
- Features: Length up to several hundred millimeters, suitable for deep-hole connections
- Hardness: Hardenable to grade 8.8 and above
- Thread Type: A, B, BT, PT
- Material: Carbon Steel / Stainless Steel / Copper / Aluminum / Alloy, etc.
- Function: Self-drilling function, no pre-drilling required
- Application: Various thread types for different base materials
Fully Customizable
Custom Screws for Your Projects
- Material: Copper / Iron / Aluminum / Stainless Steel / Titanium
- Surface Treatment: Anodizing / Polishing / Zinc / Black Oxide / Phosphating / Passivation
- Screw Types: Titanium Screws/ Long Screws / Shoulder Screws / Small Screws / Self-Tapping Screws / Copper Screws / Aluminum Screws
Reliable Quality Control System
Screw Go/No-Go Gauge
A measuring tool used to verify whether a screw 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 screws, evaluating strength and wear resistance to ensure compliance with design and application standards
Screw Spectrum Test
Uses spectral analysis to determine the chemical composition of screw materials, ensuring they meet standards and customer specifications.
Plating Test
Used to measure the thickness, adhesion, and uniformity of the screw’s surface coating to ensure the plating meets quality standards.
Screw Fatigue Test
Used to evaluate the durability of screws 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 screw surfaces and the durability of their coatings.
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 screws production.
Multi-Station Machine
Multi-station machine — made for complex and custom screws.
Polishing Machine
An automated device used to improve the surface smoothness and appearance of screws.
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 screws measures the hardness of materials to ensure strength and durability.
About Us
HK TONGLIN INTERNATIONAL LIMITED was established in 2011, specializing in processing of fasteners and CNC turning parts business, which has own processing factory located in Zhongshan City, Guangdong Province, China.
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 high-purity titanium materials (Gr2, Gr5), 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
- Zhongshan, Guangdong, China
Get Samples Now !
View samples of our screws products. Seeing the quality of our products with your own eyes, let’s officially start our cooperation.
