DIN 6334 Hex Coupling 3d Nut provides an extended internal thread engagement length and is commonly used to connect two threaded rods, studs, or bars for extension or adjustment. The hex exterior allows wrench operation, making it practical for quick on-site joining and tension adjustment.
This product is widely used in suspension supports, building installation, equipment fixing, formwork systems, and mechanical adjustment mechanisms. The 3d coupling length offers more thread contact, helping improve joint stability and adjustment reliability.
Matching threads can be selected according to the connected rod size, with zinc plating, stainless steel, or other finishes available to suit different connection and corrosion-protection requirements.

Dimensions unit: mm
|
Thread size d |
M6 |
M8 |
M10 |
M12 |
M14 |
M16 |
M18 |
M20 |
M22 |
M24 |
M27 |
M30 |
M33 |
M36 |
||
|
P |
Pitch |
1 |
1.25 |
1.5 |
1.75 |
2 |
2 |
2.5 |
2.5 |
2.5 |
3 |
3 |
3.5 |
3.5 |
4 |
|
|
s |
10 |
13 |
17 |
19 |
22 |
24 |
27 |
30 |
32 |
36 |
41 |
46 |
50 |
55 |
||
|
L |
18 |
24 |
30 |
36 |
42 |
48 |
54 |
60 |
66 |
72 |
81 |
90 |
99 |
108 |
||
|
e |
11.05 |
14.38 |
18.9 |
21.1 |
24.49 |
26.75 |
29.56 |
33.53 |
35.03 |
39.98 |
45.2 |
50.85 |
55.37 |
60.79 |
||
|
Weight per thousand pieces (steel)≈kg |
7 |
18 |
42 |
63 |
95.5 |
122 |
140 |
240 |
300 |
412 |
608 |
825 |
1100 |
1470 |
||
① Material:
a) Austenitic stainless steel, grade: A2, A4; strength grade: ≤M39:50, ≤M20:70,80; standard DIN EN ISO 3506-1-1979.
b) Performance strength level: 50, manufactured from A1, A2; characteristics: soft; cold-worked, turned and soft-pressed fasteners; (A2 applies to fasteners of this standard)
c) Performance strength level: 70, manufactured from A2, A4; Features: cold worked, standard strength formed fasteners;
d) Performance strength level: 80, made of A2, A4; characteristics: extremely cold processing, high strength, special purpose
FAQ
A: We take every inquiry seriously. On working days, we will respond within 12 hours after receiving your inquiry.
A: We focus on the production of fasteners made of carbon steel, stainless steel, and low-alloy steel. We are a direct manufacturer with independent production capacity. DIN 6334 Hexagon Coupling 3d Nut Factory. We own several fastener manufacturing facilities and have an international sales department, providing full-process services from production to export.
A: Customized production is our core business. We can develop and manufacture products based on the drawings or samples you provide.
A: Yes. In addition to custom products, we also produce general construction machinery parts (GET parts) for equipment such as excavators, including bucket teeth, tooth holders, corner blades, pins, clips, bolts and nuts. DIN 6334 Hexagon Coupling 3d Nut Wholesale.
A: We have 12 energy-efficient and environmentally friendly modern production lines (including one fully automatic shell molding line and four heat treatment lines), with an annual production capacity exceeding 20,000 tons, enabling us to steadily meet various order requirements.
A: Trade terms (such as FOB, CIF, etc.) are confirmed when quoting. For batch production, we typically require a 30% deposit, with the balance paid against the copy of the bill of lading. T/T is the main payment method accepted, and L/C can also be negotiated.
A: We are only 35 km away from Shanghai Port and Ningbo Port, so sea freight is the main mode of transportation, which is convenient and efficient. For urgent deliveries, we can also arrange air freight via Ningbo or Shanghai airports.
About Us
Better Fastener is a professional fastener enterprise specializing in the manufacturing of steel washers, stainless steel washers, spring washers and sealingwashers. Founded in 2001 as a washer factory, the company expanded into a comprehensive enterprise integrating washers, nuts, bolts, spring nuts and other fastener products in 2010. DIN 6334 Hexagon Coupling 3d Nut Suppliers in China.
The company positions itself as a provider of comprehensive one-stop services for customers, relying on technological R&D, industrial investment and trade distribution.
With an experienced professional team and a sound sales network, Better Fastener has achieved excellent sales performance in both domestic and foreign markets,and has grown into one of the competitive manufacturers and suppliers in China's industrial fastener industry.
Better Fastener is committed to becoming a trusted fastener supplier for customers with reliable product quality, reasonable prices and on-time deliveryNEWS