Jinjiang Tagong Hardware Forging Manufacturer Co. LTD,
With an impressive legacy of over 35 years, our renowned company specializes in creating premium, high-quality nuts designed to endure and excel through time. Since 1985,
Our comprehensive selection of standard nuts is meticulously crafted to meet and exceed all industry-standard specifications (GB/DIN/ISO/UNI/JIS/GOST/ANSI/ASTM), ensuring they deliver unparalleled durability and seamless integration.
In addition, we offer a distinguished array of specialty nuts (including slotted nuts, nylon insert nuts, flange nuts, self-locking nuts, square nuts, cap nuts, and more) which are precisely engineered to meet a wide spectrum of needs and adaptable applications.
Standard: Experience unmatched precision with our DIN912 Hex Socket Head Cap Screws, setting the benchmark for excellence in fastening solutions.
Grade: Choose from an extensive range of grades including 4.8, 6.8, 8.8, 10.9, and 12.9, ensuring unparalleled durability and performance in any application.
Size: Available in versatile sizes from M12 to M36, these bolts offer exceptional flexibility to suit a wide array of industrial and commercial applications.
Surface treatment: Discover a variety of surface treatment options including Black, Zinc Plated, Zinc (Yellow) Plated, Hot Dip Galvanized (H.D.G), and Dacroment, each designed to cater to your diverse project needs.
Material: Crafted from superior Carbon steel, Alloy steel, and Stainless steel, these bolts promise unmatched strength, reliability, and resilience.
Packing: Conveniently packed in 25kgs per box, with 36 boxes per pallet, totaling 900kgs per pallet; designed for easy handling and seamless transport logistics.
Sample: Enjoy the advantage of complimentary samples, allowing you to evaluate our product quality firsthand and experience the excellence we deliver.
DIN912 Hex Socket Head Cap Bolts with Yellow Zinc |
(Samples with surface treatment of Plain + oil for optimal test results and performance assurance, consistently delivering excellence and reliability in every project.)

Materials and surface treatments can be fully tailored as follows: Tailor the materials and treatments to align perfectly with your specific project requirements, offering bespoke solutions that meet your unique demands.
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 loads of 1.5 tons to 2.5 tons per pallet; this packaging can be customized with precision to meet any buyer's specifications.
For further assistance and detailed inquiries, our dedicated team is ready to provide expert guidance and prompt answers. Please feel free to contact us at your convenience.
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; ensuring 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, turning your vision into reality with precision and expertise.
WHOWE ARE
With a distinguished legacy spanning over 38 illustrious years, Jinjiang Tagong Hardware Forging Manufacturer Co. Ltd. shines as a luminary in the fastener industry. Renowned for an unwavering commitment to stellar quality and unmatched expertise, this revered company excels in delivering both standardized and bespoke solutions, tailored with precision to meet a diverse spectrum of needs.
Since 1985, our cutting-edge manufacturing facility has expanded across an exceptional 60,000 square meters. Nestled strategically in the thriving hub of Jinjiang City, this prime location enhances our operational prowess and efficiency, setting us apart in the industry.
Our core strength lies in the artful combination of state-of-the-art forging techniques and precise machining processes. Our expert production management team, in perfect synergy with a highly skilled technical R&D department, excels at crafting custom fasteners that align perfectly with the unique specifications and innovations of our valued clients.
Our products are synonymous with unrivaled quality and steadfast reliability, having successfully undergone stringent testing protocols and earned prestigious certifications like ISO9001/2015, GB/T19001-2016, and SGS standards, guaranteeing excellence in every meticulously crafted piece.
Driven by a steadfast dedication to quality, we have established our reputation as a trusted supplier on the global stage. Our products are celebrated and widely adopted across continents such as Europe, Australia, North America, South Asia, and beyond, strengthening our global presence and acclaim.
Development History
Production Workshop
Exhibition