Jinjiang Tagong Hardware Forging Manufacturer Co. LTD,
Proudly specializing in the manufacturing of top-tier nuts since 1985,
We proudly offer a comprehensive selection of standard nuts, including (GB/DIN/ISO/UNI/JIS/GOST/ANSI/ASTM), all crafted to ensure exceptional quality and impeccable compatibility;
In addition, our distinctive 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 to cater to a variety of needs and applications.
Standard: DIN912 Hex Socket Head Cap Screws - The epitome of precision engineering, adhering to international standards for unmatched reliability.
Grade: 4.8 6.8 8.8 10.9 12.9 - Offering an impressive range of strength grades to cater to diverse, demanding applications.
Size: M12--M36 - Versatile sizing options to seamlessly integrate with various mechanical requirements.
Surface treatment: A range of options including Black, zinc plated, zinc(yellow) plated, H.D.G etc, and Dacroment for enhanced protection and aesthetic appeal.
Material: Carbon steel, alloy steel, stainless steel etc. - Crafted from premium materials ensuring durability and performance.
Packing: Efficient and secure packaging with 25kgs per box, 36 boxes per pallet, totaling 900kgs per pallet, ensuring safe transit.
Sample: Samples are free, providing a risk-free opportunity to experience our product quality firsthand.
DIN912 Hex Socket Head Cap Bolts with Yellow Zinc |
(Samples with surface treatment of Plain+oil for optimal test results and performance assurance - An attribute enhancing the reliability of your tests.)

Materials and surface treatments can be fully tailored as follows: Tailor the materials and treatments to suit your specific project requirements, ensuring a perfect fit for your needs.
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, supporting 1.5tons-2.5tons per pallet; customizable to meet any buyer's specifications, ensuring flexibility in logistics.
For further assistance and detailed inquiries, please feel free to contact us. Our expert team is ready to provide guidance and comprehensive answers.
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, kindly reach out for an accurate quote before placing an order. This ensures you receive the best pricing and effective budget management.
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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, ensuring your visions become reality.
WHOWE ARE
With an illustrious legacy of over 38 years, Jinjiang Tagong Hardware Forging Manufacturer Co. Ltd. shines as a beacon in the fastener industry. Celebrated for its steadfast dedication to excellence and unsurpassed expertise, the company consistently provides both standardized and bespoke solutions, flawlessly meeting a broad spectrum of client needs.
Founded in 1985, our cutting-edge manufacturing facility stretches across an impressive 60,000 square meters, perfectly positioned in the bustling heart of Jinjiang City, strategically boosting our operational proficiency and efficiency.
Our expertise is in the artful integration of state-of-the-art forging methods with meticulous precision machining. Our adept production management team, coupled with a highly skilled technical R&D department, excels in crafting fasteners that are uniquely customized to meet the precise specifications and visionary expectations of our esteemed clientele.
Our products stand as a testament to superior quality and steadfast reliability, having undergone stringent testing and achieving certifications in accordance with ISO9001/2015, GB/T19001-2016, and SGS standards, thus guaranteeing exceptional quality in every single piece.
Propelled by an unwavering dedication to quality, we have positioned ourselves as a preferred supplier on the global stage. Our products garner acclaim and are extensively utilized across the globe, including Europe, Australia, North America, South Asia, and beyond, significantly enhancing our global footprint.
Development History
Production Workshop
Exhibition