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. Every 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. Experience unparalleled performance and reliability with each sample, ensuring excellence at every turn for your projects.)

Materials and surface treatments are fully customizable: Craft bespoke solutions tailored to meet your project's unique specifications, ensuring perfect alignment with your specific needs.
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:Each 25kg carton supports loads from 1.5 to 2.5 tons per pallet. Our packaging solutions are tailored to meet your precise requirements, ensuring safe and efficient transport that guarantees peace of mind.
For further assistance and detailed inquiries, our expert team is eager to provide dependable guidance and prompt responses. Reach out at your convenience for support that is second to none.
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 potential fluctuations in material costs, please contact us for the most accurate quote. This ensures you receive the best pricing while effectively managing your budget and optimizing your purchasing strategy.
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Should you have a custom design, do not hesitate to reach out. We are excited to collaborate on custom solutions, transforming your vision with precision and expertise to exceed expectations.
WHOWE ARE
For 38 awe-inspiring years, Jinjiang Tagong Hardware Forging Manufacturer Co. Ltd. has been a luminous beacon in the fastener industry. Renowned for our unwavering dedication to unparalleled quality and technical mastery, we consistently provide both readily available and customized fastener solutions. Engineered with impeccable precision, our products serve a vast array of requirements, setting new benchmarks for outstanding quality and reliability.
Established in 1985, our advanced manufacturing facility spans an impressive 60,000 square meters. Located at the vibrant heart of Jinjiang City, this strategic position significantly enhances our operational capabilities and efficiency, propelling our success in delighting clients around the globe.
Our expertise shines through the seamless fusion of cutting-edge forging techniques and meticulous machining processes. Our production management team collaborates harmoniously with our highly skilled technical R&D department, excelling in the creation of custom fasteners crafted to meet the unique demands and visions of our esteemed clients.
Our products epitomize exceptional quality and unwavering reliability, having successfully passed rigorous testing protocols. They are proudly endorsed by certifications such as ISO9001/2015, GB/T19001-2016, and SGS, guaranteeing excellence in every meticulously crafted piece.
Fueled by an unwavering commitment to outstanding quality, we have forged a reputation as a trusted supplier on the international stage. Our products are celebrated and widely employed across continents including Europe, Australia, North America, and South Asia, further amplifying our global presence and esteemed reputation.
Development History
Production Workshop
Exhibition: Step into a realm where state-of-the-art innovation meets exquisite engineering at the Jinjiang Tagong Hardware Forging Manufacturer Co. Ltd. exhibition booth. Be prepared to be mesmerized by the superb precision and extraordinary craftsmanship of our exceptional products. Immerse yourself in the unparalleled quality and stunning design of our Class 10 DIN 912 Black Fasteners. These are meticulously engineered to provide not only unmatched performance but also a striking aesthetic appeal. With our unique plain and oil surface finishes, experience an elevated standard of fasteners that ensures both durability and an elegance that is simply beyond compare.