Jinjiang Tagong Hardware Forging Manufacturer Co. LTD,
With an illustrious heritage spanning over 35 enriching years, Jinjiang Tagong Hardware Forging Manufacturer Co. Ltd. is heralded as a beacon of superior craftsmanship in the art of high-quality nut production. Every component is expertly crafted to withstand the test of time while delivering unmatched reliability and strength, truly setting the gold standard within the industry. Founded in 1985,
Our comprehensive range of standard nuts is meticulously engineered to not only meet but exceed every industry-standard specification. (GB/DIN/ISO/UNI/JIS/GOST/ANSI/ASTM). Each piece offers exceptional durability and 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 crafted to satisfy a diverse spectrum of needs, tailored 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 engineered to ensure optimal test results and outstanding performance assurance. Our commitment is to consistently deliver unparalleled excellence and unwavering reliability for every single project.)

Materials and surface treatments are fully customizable: Tailor these solutions to the unique demands of your project, offering bespoke options that perfectly align with your specific requirements.
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 substantial loads from 1.5 tons to 2.5 tons per pallet. Our packaging solutions can be precisely customized to meet any buyer's specific requirements, ensuring safe, secure, and efficient transportation of your products.
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 for unparalleled support and comprehensive assistance.
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 ensures you secure the best pricing available and effectively manage your budget, optimizing your purchasing strategy with precision.
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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 while consistently exceeding expectations.
WHOWE ARE
For an exceptional journey spanning 38 years, Jinjiang Tagong Hardware Forging Manufacturer Co. Ltd. stands as an iconic leader in the fastener industry. Revered for our unwavering dedication to unparalleled quality and expertise, we consistently provide both standard and customized fastener solutions. Crafted with remarkable precision, our products are engineered to fulfill a wide spectrum of needs, setting unprecedented benchmarks for superior quality and reliability.
Founded in 1985, our cutting-edge manufacturing facility spans a sprawling 60,000 square meters. Strategically located in the dynamic heart of Jinjiang City, this optimal position significantly enhances our operational effectiveness and efficiency, driving our success in catering to clients worldwide.
Our expertise is the result of a perfect fusion of innovative forging techniques and precise machining processes. Our production management team collaborates seamlessly with our highly skilled technical R&D department, excelling in crafting bespoke fasteners tailored to meet the unique demands and visions of our esteemed clients.
Our products are a testament to ultimate quality and steadfast reliability, having successfully withstood stringent testing protocols. They proudly boast certifications such as ISO9001/2015, GB/T19001-2016, and SGS, guaranteeing excellence in every intricately crafted piece.
Fueled by an unwavering commitment to quality, we have established a reputation as a trusted supplier on the global stage. Our products are acclaimed and extensively utilized across various continents including Europe, Australia, North America, and South Asia, further amplifying our global presence and esteemed reputation.
Development History
Production Workshop
Exhibition: Step into the realm of cutting-edge innovation and masterful engineering at the illustrious Jinjiang Tagong Hardware Forging Manufacturer Co. Ltd. exhibition booth. Prepare to be captivated by the exceptional precision and superior craftsmanship inherent in our products. Delve into the remarkable quality and extraordinary design of our Class 10 DIN 912 Black Fasteners, meticulously engineered to provide unparalleled performance and aesthetic allure. Featuring our distinctive plain and oil surface finishes, embrace a revolutionary standard of excellence in fasteners that promises unmatched durability and elegance.