Jinjiang Tagong Hardware Forging Manufacturer Co. LTD,
With an illustrious legacy that spans over 35 years, Jinjiang Tagong Hardware Forging Manufacturer Co. Ltd. has established itself as a testament to exceptional craftsmanship in the production of premium-quality nuts. These meticulously crafted components are designed to withstand the test of time, offering unmatched reliability and unparalleled strength within the industry. Founded in 1985,
Our extensive range of standard nuts is meticulously crafted to meet every established industry specification (GB/DIN/ISO/UNI/JIS/GOST/ANSI/ASTM), ensuring each nut delivers exceptional durability and integrates effortlessly into a wide array of applications.
Moreover, our exclusive collection of specialty nuts (including slotted nuts, nylon insert nuts, flange nuts, self-locking nuts, square nuts, cap nuts, and more) is expertly engineered to cater to a diverse range of needs, crafted for versatile applications across numerous industries.
Standard U Bolt with Two Nuts: Engineered to deliver dependable performance, our U Bolt comes complete with two precision-crafted nuts.
Grade: Available in an extensive range: 3.6, 4.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, 12.9. Select the perfect match for your application.
Size: M3-M100, accommodating diverse applications with precision and adaptability.
Surface: Offered in Black, zinc-plating, H.D.G, dacromet, and more to suit your aesthetic and functional needs.
Material: Choose from Carbon steel, Alloy steel, stainless steel, and more to ensure robustness and longevity in your projects.
Package: Efficiently packed with 25kgs per Box, 36 boxes per Pallet, totaling 900kgs per Pallet for secure and organized transportation.
Sample: Enjoy the advantage of FREE Samples, allowing you to evaluate our product's superior quality firsthand.
Stainless Steel U Bolt with 2 Nuts |
(Samples with surface treatment of Plain + oil for optimal test results and performance assurance, consistently delivering excellence and reliability for every project.)

Materials and surface treatments can be fully tailored as follows: Customize your materials and treatments to precisely match your specific project needs, offering bespoke solutions tailored to 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: Experience peace of mind with our robust packaging solutions.25kg/carton, capable of supporting loads from 1.5 tons to 2.5 tons per pallet; our packaging can be precisely customized to meet any buyer's specific requirements.
For further assistance and detailed inquiries, our dedicated team stands ready to provide expert guidance and swift responses. Feel free to reach out 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 contact us for an accurate quote before placing an order, ensuring you secure 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 enthusiastic to collaborate on tailored solutions, transforming 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. stands proudly at the forefront of the fastener industry. Revered for our steadfast commitment to delivering unmatched quality and expertise, we continually provide both standardized and tailored fastener solutions that meet a broad spectrum of needs with impeccable precision.
Since 1985, our state-of-the-art manufacturing facility, spread over an impressive 60,000 square meters, has been a beacon of innovation. Located strategically in the vibrant heart of Jinjiang City, this hub significantly enhances our capabilities and operational efficiency, allowing us to serve our clients with unparalleled dedication.
Our core expertise is a harmonious blend of advanced forging techniques and meticulous machining processes. Our production management team, collaborating seamlessly with a highly skilled technical R&D department, excels at crafting bespoke fasteners. These fasteners fulfill the unique specifications and aspirations of each of our valued clients with precision and artistry.
Our products embody superior quality and unwavering reliability, having been rigorously tested and certified in accordance with ISO9001/2015, GB/T19001-2016, and SGS standards. This ensures that every meticulously crafted piece meets the highest standards of excellence.
Driven by an unwavering dedication to quality, we have solidified our position as a trusted supplier on the global stage. Our products are celebrated across continents, including Europe, Australia, North America, South Asia, and many others, amplifying our global presence and reputation with each satisfied customer.
Development History
Production Workshop
Exhibition: Immerse yourself in a world of cutting-edge innovation at the Jinjiang Tagong Hardware Forging Manufacturer Co. Ltd. booth, where precision engineering meets superior craftsmanship. Be captivated by our Class 10 DIN 912 Black Fasteners' exceptional quality, designed to impress with their flawless plain and oil finish. Experience firsthand the pinnacle of performance and style in industrial fasteners as you explore our offerings.