David Dorfmüller Söhne – DDS in short.
Standard fasteners and high precision parts:
Big or small, thick or thin, long or short – made from steel or other special materials: We can fix everything for you. Up to 800 mm outer diameter, a length of 1,000 mm and a maximum weight of 500 kg. Know-how, experience and state-of-the-art technology make it possible to supply you with almost any kind of fastener.
Turn to us for quality work.
You need competent, technical advice in the field of fasteners? We will be glad to help you! Whether it concerns materials, grades, surfaces or other important questions, we always try to find a satisfactory solution for you.
find your contact
✆ +49 (0) 2191 / 694 20-0
to our contact form
Custom Parts
DDS supplies special and drawn parts in the most varied dimensions and designs, in the accustomed highest quality.
Flansch – Energiesektor Ø300x95
Bundmutter – Chemieindustrie M40x1,5
Hülse – Energiesektor Ø80x50
Überwurfmutter – Schlauchverschraubung G1/2"
Big or small, thick or thin, long or short – made from steel or other special materials: We can fix everything for you.
To our special parts
Standard Parts
Benefit also with standard parts from our well-designed stock and our high level of expertise.
Bajonettscheibe DIN 55027 - Bajonettscheibe
für Spindelköpfe mit Zentrierkegel.
Nutmutter DIN 1804
mit metrischem Feingewinde.
Sicherbare Nutmutter KMTA
Sicherung duch drei radiale, im Flankenwinkel geneigte Messingstifte.
At home in the world.
Represented in trend-setting industries worldwide - the high diversity of DDS products.
Connecting Components
We serve almost all common dealers in the fastener sector
Mechanical Engineering
Large and small machine builders are among our satisfied customers.
Wind Energy
Clean energy also needs fasteners! That is why we have long been a supplier to the wind industry.
Railway Construction
Whether nuts, flanges or parts for wheelsets: We are also broadly positioned in the railway sector.
Gear Manufacturing
We supply shaft nuts and other components to well-known manufacturers of large gears.
Power Industry
Manufacturers of gas and steam turbines also appreciate the quality of our products and the variety of materials we process.
Plant Engineering
For a long time we have been a reliable partner for high quality nuts and other connecting elements.
Ship Building
Since we can also handle 3.2 inspections for the maritime sector, we are a reliable partner for shipbuilding.
In which industry can we support YOU?
Materials and qualities
The inner values count - With this saying the world of materials can be described well. Although some of our bearing materials may look the same, each material has its own special purpose. To ensure that your component functions in practice, we manufacture from all common steels, non-ferrous and light metals.
If your desired material does not appear in our list, please do not hesitate to contact us.
Our stock is mainly characterized by:
- Tempered steels according to EN10083
- Steels for high and low temperature applications according to EN10269
- Stainless and acid-resistant steels according to EN10088
We can procure almost any other material within a very short time thanks to our well-crosslinked material purchasing. Every material is stored by us absolutely batch-clean and traceable.
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General structural steels and case-hardened steels
Substance Number
Denomination
Code Letter
1.0570St 52-3ND
1.0401C15FE
1.713116MnCr5F
Free-cutting steels
Substance Number
Denomination
Code Letter
1.071511SMn30AS1
1.071811SMnPb30AS1Pb
Tempered steels according to EN10083
Substance Number
Denomination
Code Letter
1.0503C45C45
1.0601C60C60
1.722542CrMo4EC
1.722850CrMo4FC
1.815950CrV4DB
1.658234CrNiMo6DE
1.658030CrNiMo8DF
1.721825CrMo4BC
Materials for high and low temperature applications according to EN10269
Substance Number
Denomination
Code Letter
1.770921CrMoV57GA
1.771140CrMoV47GB
1.721825CrMo4KG
1.4923X22CrMoV12-1V
1.4913X19CrMoNbVN11-1VW
1.4980X6NiCrTiMoVB25-15-2SD
2.4952NiCr20TiAlSB
2.4668NiCr19Fe19Nb5Mo3 (Inconel 718)
2.4669NiCr15Fe7TiAl (Inconel X 750)
Rust- and acid-resistant materials according to EN10088
Substance Number
Denomination
Code Letter
1.4301X5CrNi1B-10A2
1.4541X6CrNiTi1B-10A3
1.4404X2CrNiMo17-12-2A4
1.4571X6CrNiMoTi17-12-2A5
1.4462X2CrNiMoN22-5-3W4462
1.4021X20Cr13C2
1.4057X17CrNi16-2C3
1.4122X39CrMo17-1C5
1.4034X46Cr13VB
Non-ferrous and light metals
Substance Number
Denomination
Code Letter
3.1645AlCu4PbMgMn AW2007
3.3547AlMg4,5MnAW5083
3.3206AlMgSiAW6060
2.0550CuZn37Mn3Al2PbSi CU2
2.0401CuZn39Pb3CU3
2.1030CuSn8CU4
2.0855CuNi2SiCU5
2.0966CuAl10Ni5Fe4CU7
Knowing today what you need tomorrow
...isn’t exactly our speciality. But we can prepare for maximal spontaneity in the market and the corresponding material requirements. Therefore our 1,000 m²-large warehouse usually holds 400 tons of raw materials – usual as well as more special ones.
At short notice, we effortlessly draw non-stores materials, measurements and qualities from our international supply network. Even with the least usual materials our purchasing department has no trouble whatsoever in finding out the currently quickest and economical way. The fastest availability of materials accompanied with our optimised processes of production guarantee a smooth and trouble-free delivery cycle.
Take a look at our raw materials
