Jinjiang Tagong Hardware Forging Manufacturer Co. LTD,
Proudly specializing in the exceptional manufacturing of superior-quality nuts since 1985,
We take immense pride in offering a comprehensive and diverse selection of standard nuts, including (GB/DIN/ISO/UNI/JIS/GOST/ANSI/ASTM), all expertly crafted to ensure unparalleled quality and flawless compatibility;
In addition, our distinctive and innovative collection of special nuts (such as slotted nuts, nylon insert nuts, flange nuts, self-locking nuts, square nuts, cap nuts, and more) is meticulously designed and engineered to cater to a wide variety of needs and specialized applications.
Standard: Experience unmatched precision and superior engineering with our top-tier DIN912 Hex Socket Head Cap Screws. These fasteners exemplify excellence, ensuring that every project is supported by the highest quality engineering standards.
Grade: Choose from an extensive range of grades including 4.8, 6.8, 8.8, 10.9, and 12.9. These grades are synonymous with unparalleled durability, offering you the best in strength and performance for demanding applications.
Size: Available in versatile sizes from M12 to M36, our fasteners provide the flexibility and adaptability necessary for a multitude of applications, ensuring that you always have the perfect fit for your needs.
Surface treatment: Discover a variety of surface treatment options including Black, Zinc Plated, Zinc (Yellow) Plated, Hot Dip Galvanized (H.D.G), and Dacroment. These options are designed to cater to diverse needs, providing resilience and long-lasting protection.
Material: Crafted from superior quality Carbon steel, Alloy steel, and Stainless steel, our products ensure strength and reliability that you can trust in every application.
Packing: Conveniently packed at 25kgs per box with 36 boxes per pallet, amounting to a total of 900kgs per pallet, facilitating easy handling and efficient transport logistics.
Sample: Enjoy the advantage of free samples, allowing you to evaluate our product quality firsthand and witness the exceptional standards we uphold.
DIN912 Hex Socket Head Cap Bolts with Yellow Zinc |
(Samples with surface treatment of Plain + oil for optimal test results and performance assurance, delivering excellence in every project and ensuring your utmost satisfaction.)

Materials and surface treatments can be fully tailored as follows: Tailor the materials and treatments to perfectly align with your specific project requirements, offering bespoke solutions that meet your exact needs with precision.
Mechnical Property |
Material |
Surface Treatment |
Class 6 / 8/ 10 /12 |
C45
40Cr
35CrMo
42CrMo
|
♦Yellow Zinc
♦Zinc Plated
♦Black Oxide
♦Phosphate
♦Dacromet
♦Geomet |
Packing way:25kg/carton, with pallets supporting loads of 1.5 tons to 2.5 tons; customizable to meet any buyer's specifications with precision and ease.
For further assistance and detailed inquiries, please feel free to contact us. Our dedicated team is ready to provide expert guidance and prompt answers, ensuring a seamless experience.
DIN6923 |
Thread Size |
c min |
da |
dwmin |
e min |
h |
m min |
mw min |
s |
M18 |
2.4 |
16-17.3 |
34.5 |
31.9 |
26.75-16 |
15.3 |
9 |
24-23.67 |
M20 |
3 |
20-21.6 |
42.8 |
39.9 |
32.95-20 |
18.9 |
11.1 |
30-29.67 |
P.S.: Due to fluctuations in material costs, please reach out for an accurate quote before placing an order. This ensures optimal pricing and effective budget management, helping you make the most informed decisions.
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If you have a custom design, please do not hesitate to contact us. We are eager to collaborate on tailored solutions, helping turn your vision into reality with our expertise and dedication.
WHOWE ARE
With an illustrious legacy spanning over 38 remarkable years, Jinjiang Tagong Hardware Forging Manufacturer Co. Ltd. proudly stands as a beacon of excellence in the fastener industry. Renowned for our unwavering dedication to quality and unmatched expertise, we consistently provide both standardized and custom solutions that perfectly cater to diverse needs.
Founded in 1985, our state-of-the-art manufacturing facility stretches across an impressive 60,000 square meters. Strategically positioned in the vibrant epicenter of Jinjiang City, this location significantly amplifies our operational capabilities and efficiency.
Our expertise lies in the seamless integration of advanced forging techniques with meticulous machining. Our proficient production management team, coupled with a highly talented technical R&D department, excels in crafting bespoke fasteners that align with the intricate specifications and visionary concepts of our esteemed clients.
Our products epitomize superior quality and unwavering reliability, having successfully passed rigorous testing and achieved certifications that align with ISO9001/2015, GB/T19001-2016, and SGS standards, guaranteeing excellence in every single piece.
Fueled by an unwavering commitment to quality, we have established ourselves as a trusted supplier on the global stage. Our products are celebrated and widely embraced across continents, including Europe, Australia, North America, South Asia, and beyond, significantly amplifying our global presence.
Development History
Production Workshop
Exhibition