Jinjiang Tagong Hardware Forging Manufacturer Co. Ltd.,
Boasting a legacy enriched with over 35 years of excellence, Jinjiang Tagong Hardware Forging Manufacturer Co. Ltd. is a hallmark of exceptional artistry in the realm of premium nut production. Each component is a masterpiece, designed to withstand the test of time while delivering unparalleled reliability and strength, firmly establishing a benchmark of excellence in the industry. Established in 1985,
Our wide-ranging selection of standard nuts is impeccably designed to not just meet but surpass every industry-standard specification (GB/DIN/ISO/UNI/JIS/GOST/ANSI/ASTM). Every piece is a testament to extraordinary durability and ensures flawless integration into any intended application.
Furthermore, our unique collection of specialty nuts (including slotted nuts, nylon insert nuts, flange nuts, self-locking nuts, square nuts, cap nuts, and more) is exquisitely crafted to address a broad array of requirements, engineered for adaptable and forward-thinking applications across numerous 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. Elevate your project with each of our meticulously crafted samples, guaranteeing exceptional test results and unwavering performance. Consistently exuding excellence and reliability, they are designed to meet the highest standards for every project.)

Materials and surface treatments are fully customizable: Adapt them seamlessly to your specific project requirements, offering bespoke solutions that perfectly align with your unique demands, ensuring a flawless fit every time.
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 engineered to support loads ranging from 1.5 tons to 2.5 tons per pallet. Our packaging solutions are precisely tailored to meet any buyer's specific requirements, ensuring safe, secure, and efficient transportation to your destination.
Our dedicated team is on standby, ready to provide expert guidance and prompt responses to all your inquiries. Reach out at your convenience to experience unparalleled support and assistance, tailored to exceed your expectations.
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 contact us for an accurate quote before placing an order. This proactive step ensures you secure the most competitive pricing, effectively manage your budget, and optimize your purchasing strategy.
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For custom designs, please do not hesitate to contact us. We are eager to collaborate on bespoke solutions, transforming your vision into reality with precision and expertise, while consistently surpassing expectations.
WHOWE ARE
For 38 awe-inspiring years, Jinjiang Tagong Hardware Forging Manufacturer Co. Ltd. has stood as a beacon of excellence in the fastener industry. Known for our unwavering dedication to unparalleled quality and deep-rooted expertise, we consistently deliver both standard and custom-crafted fastener solutions. Our products, designed with exquisite precision, address a multitude of requirements, elevating industry standards for exceptional quality and dependability.
Founded in 1985, our cutting-edge manufacturing facility spans an impressive 60,000 square meters. Situated in the lively heart of Jinjiang City, this strategic location amplifies our operational capabilities and efficiency, driving our success in catering to clients worldwide.
Our expertise shines through a flawless fusion of advanced 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 unique demands and visions of our esteemed clients.
Our products embody supreme quality and steadfast reliability, having triumphantly passed extensive testing protocols. They proudly bear certifications like ISO9001/2015, GB/T19001-2016, and SGS, guaranteeing excellence in every meticulously crafted piece.
Fueled by an unwavering commitment to quality, we have built a reputation as a trusted supplier on the global stage. Our products are celebrated and widely utilized across various continents, including Europe, Australia, North America, and South Asia, further elevating our international presence and esteemed stature.
Development History
Production Workshop
Exhibition: Step into a realm of unparalleled innovation and masterful engineering at the Jinjiang Tagong Hardware Forging Manufacturer Co. Ltd. exhibition booth. Prepare to be enchanted by the exquisite precision and exceptional craftsmanship that define our esteemed products. Immerse yourself in the extraordinary quality and remarkable design of our Class 10 DIN 912 Black Fasteners, artfully engineered to provide unparalleled performance and an aesthetic allure. With our unique plain and oil surface finishes, embrace a new paradigm of fasteners that offer not just durability, but an elegance that stands unrivaled.