Jinjiang Tagong Hardware Forging Manufacturer Co. Ltd.,
With an illustrious heritage spanning over 35 enriching years, Jinjiang Tagong Hardware Forging Manufacturer Co. Ltd. stands as a beacon of superior craftsmanship in the art of high-quality nut production. Each component is expertly crafted to not only endure the test of time but also deliver unmatched reliability and strength, setting the gold standard within the industry. Founded in 1985,
Our comprehensive range of standard nuts is meticulously engineered to meet and exceed every industry-standard specification (GB/DIN/ISO/UNI/JIS/GOST/ANSI/ASTM). Each piece offers not only exceptional durability but also seamless integration into any application it is designed for.
Moreover, our exclusive array of specialty nuts (including slotted nuts, nylon insert nuts, flange nuts, self-locking nuts, square nuts, cap nuts, and more) is masterfully created to satisfy a diverse spectrum of needs, crafted for versatile and innovative applications across a multitude of industries.
Product name |
Carbon Steel Galvanized Gr4.8 Fasteners DIN933 DIN 931 DIN 601 Titanium Hexagon Head Bolt Cap Screw Nuts and hex Bolts |
Standard: |
ANSI/ASME B18.2.1 DIN931 DIN933 DIN960 DIN961 GB1228 GB30 GB5781 GB5782 GB5783 GB5785 GB5786 |
Thread: |
unc,unf,metric thread |
Material: |
Stainless steel (303,304, 316, 201),carbon steel (35#, 45#),
galvanized, aluminum alloy, copper, carbon steel and so on
|
Finish: |
Plain,Zinc Plated(Clear/Blue/Yellow/Black), Black oxide,Nickel,
grey phosphate,nickel,ruspert,H.D.G,etc
|
Packing: |
bulk in cartons (25kg Max.)+wood Pallet or according to customer special demand |
Grade |
4.8, 6.8, 8.8, 10.9, 12.9, A2-70, A4-80,etc |
Leading Time : |
10-30 days or based on order required |
Carbon Steel Galvanized Gr4.8 Fasteners DIN933 DIN 931 DIN 601 Titanium Hexagon Head Bolt Cap Screw Nuts and Hex Bolts |
(Samples available with various surface treatments including Plain + oil. Each meticulously crafted sample is your gateway to unlocking unparalleled test results and performance assurance, consistently delivering a symphony of excellence and reliability for every project.)

Materials and surface treatments are fully customizable: Seamlessly tailor these to suit your specific project needs, offering bespoke solutions that perfectly align with your unique demands and visionary aspirations.
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, expertly supporting loads from 1.5 tons to 2.5 tons per pallet. Our packaging solutions are precisely customizable to meet any buyer's specific requirements, ensuring the pinnacle of safe and efficient transportation.
For further assistance and detailed inquiries, our dedicated team of experts stands eagerly ready to provide guidance and swift, comprehensive responses. Feel free to reach out at your convenience for unparalleled support and personalized service.
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. This proactive step ensures you secure the best pricing and manage your budget effectively, optimizing your purchasing strategy for maximum value.
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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, all while exceeding your highest expectations.
WHOWE ARE
For 38 awe-inspiring years, Jinjiang Tagong Hardware Forging Manufacturer Co. Ltd. has been a luminary in the fastener industry. Celebrated for our steadfast dedication to unparalleled quality and expertise, we continuously provide both ready-made and custom fastener solutions. Each product is crafted with impeccable precision to accommodate a vast array of requirements, setting new benchmarks for exceptional quality and reliability.
Founded in 1985, our cutting-edge manufacturing facility spans an expansive 60,000 square meters. Nestled in the vibrant heart of Jinjiang City, this strategic location significantly enhances our operational efficiency, empowering us to beautifully serve a global clientele.
Our expertise shines through the perfect fusion of cutting-edge forging techniques and meticulous machining processes. Our production management team collaborates seamlessly with our highly skilled technical R&D department, excelling in creating bespoke fasteners tailored to meet the distinct demands and visions of our esteemed clients.
Our products epitomize supreme quality and unyielding reliability, having successfully withstood rigorous testing protocols. Proudly bearing certifications such as ISO9001/2015, GB/T19001-2016, and SGS, each meticulously crafted piece guarantees excellence.
Driven by an unwavering dedication to quality, we have forged a reputation as a trusted supplier on the global stage. Our products are renowned and extensively utilized across diverse continents including Europe, Australia, North America, and South Asia, amplifying our international presence and esteemed reputation.
Development History
Production Workshop
Exhibition: Welcome to a breathtaking showcase of innovation and engineering brilliance at the Jinjiang Tagong Hardware Forging Manufacturer Co. Ltd. exhibition booth. Be enthralled by the precision and artistry of our products, a testament to superior craftsmanship. Immerse yourself in the outstanding quality and sophisticated design of our Class 10 DIN 912 Black Fasteners, each piece a masterpiece of durability and visual allure. With our unique plain and oil surface finishes, we set a new benchmark for fasteners, delivering an unparalleled blend of robustness and elegance.