alstertalertalerr schrauben

Special screws and special bolts

Diverse materials for special use

Special screws for mechanical engineering

As a special screw manufacturer from Germany, we are your partner for screws of first-class quality. We can not only offer you a wide range of standard parts in standard designs, but as a manufacturer of special screws, we can also offer you all the special screws you need as custom-made products. With us you have the opportunity, for example, to have triangular screws and other screws made as drawing parts. You can also freely select the materials and surface treatments/finishes from our portfolio. Together with you, we will find the ideal solution for you for the production, storage and delivery, as well as assembly of your special screws and other special items.

Special screw manufacturer with 45 years of experience

If the standard is not enough for you and you need special screws for mechanical engineering, then we are exactly the right contact for you. Our range includes products for all requirements, creating reliable connections in all sectors of industry. As a special screw manufacturer, we can react within a very short time and start producing special screws according to your drawings.

Have screws made to measure

As specialists for screws and standard parts, we offer you a wide range of special screws made of different materials and for a variety of applications. Here we present some product examples from this area – made of steel and other materials:

  • Custom-made hanger bolts: made of steel, stainless steel or with a coating (galZn)
  • Custom-made triangular screws made of steel, stainless steel, brass or with a coating (galZn, galNi)
  • Steel screw bolts
  • Stud bolts custom-made for many areas of use

Take a look at our extensive catalog to find out more details about the above and other special screws. If you have any questions, our experts are at your disposal!

Our service offering for special screws

With us you can not only have screws made, but also receive a comprehensive range of services. We would be happy to put together an individual package for you with framework orders, warehousing and other services.

Here are some examples:

  • Framework orders guarantee you an optimal price-performance ratio
  • Possibility of compiling a range of triangular screws, hanger screws, etc.
  • Storage of stud bolts, screw bolts, for example: no storage costs for you
  • Wide range of assembly services, inexpensive thanks to our own fixture construction
  • Demand management, optimal availability of special screws or studs
  • Just-in-time delivery exactly on the agreed date

By the way: We offer our top service not only for special screws, but also for standard parts and all other items from our range. Our high standards guarantee the best quality. Please contact us for a non-binding offer!

Which materials are suitable for custom-made screws?

Our comprehensive selection of materials for, among other things: Stud bolts, triangular screws, screw bolts, which include not only aluminum, steel and stainless steel, but also brass, copper, Inconel, Hastelloy, titanium and tantalum, enable almost universal usability in almost all industries. Regardless of whether you want to order the required screw bolts, have screws made according to a drawing or want to take advantage of the all-round service package including logistics and assembly: you can also rely on the proven product and service quality of alstertaler schrauben for special parts!

Your personal offer

Do you need a personal offer? You can send us a message right here. Also attach the appropriate technical drawing to your message. So we can put together the right offer for you.

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    Background knowledge about special screws

    Our high-quality special screws are varied and designed according to their respective area of application. Find out more about some of the different types of special screws, their special properties and areas of application here. In our catalogs you will find detailed information about available materials. Of course, we also have relevant documents available in the download area for standardized fasteners and other items, as well as certificates and much more.

    Which forming processes does alstertaler offer for special screws?

    When producing our special screws, we rely on cutting or non-cutting forming, which in turn differentiates between hot forming and cold forming. Machining is particularly suitable when tighter tolerances are required or special geometries need to be implemented. Cold forming (also cold extrusion or cold forming) is the first choice for large quantities of screws, whereas hot forming is suitable for the production of particularly thick (> M27) or long (> 30 cm) screws. You can find detailed information about the forming processes we offer on the respective subpages of our website.


    What forming processes does alstertaler schrauben & präzisionsteile gmbh offer for special screws?

    In the production of our special screws, we rely on metal-cutting or non-cutting forming, which in turn distinguishes between hot forming and cold forming. Metal-cutting forming is particularly suitable when tighter tolerances are required or special geometries are to be implemented. Cold forming (also cold extrusion) is the first choice for large screw quantities whereas hot forming is suitable for the production of particularly thick (> M27) or long (> 30 cm) screws. Take a look at the respective sub-pages on our website for detailed information on the forming processes we offer.

    What are stud bolts suitable for?

    stud bolts

    These metal studs are firmly connected to a structural element with their cutting circle surface. This makes it look like they are “standing” on the component.

    Several machine components can be connected to each other via the stud bolts. Studs are used as fastening parts in various fields, for example in mechanical engineering or electrical engineering.

    They offer the advantage that they remain in the machine part and thus minimize the risk of damaging the fastening thread by frequent tightening and loosening.

    Why use hanger bolts?

    hanger bolts

    Hanger bolts are special fastening screws that have a dowel thread at one end and a metric thread instead of a screw head at the other end. Between them is a hexagon so that the screw can be tightened using an open-end wrench. The advantage during assembly is that the screw axis only needs to be accessible from the side in order to set the nut – easily and permanently even in the tightest of spaces. In addition, the screw can be easily dismantled without unscrewing the dowel screw connection and damaging it as a result. Hanger bolts are versatile and used, among other things, for simple fastening of construction elements of various types to concrete, masonry or wood. A typical field of application is stair construction.

    What are triangular screws?

    The so-called triangular screws from the range of security technology have, as the name suggests, a special appearance. The unusual triangular head shape of these special screws gives them their name and requires a special key to loosen or fix them. Because of this, it is not possible for unauthorized persons to easily move the special screws. In addition, they usually have a metric thread with a shank. Thus, triangular screws are often used for door locks or parking lot bars, but also for barrier posts in pedestrian areas. Due to this, they are also known as bollard bolts. Due to their everyday presence in public spaces, they have a high recognition value

    Your experts for special screws: alstertaler schrauben & präzisionsteile gmbh

    With decades of experience in range of special screws, standard parts and other components, we are your experts in all matters relating to fasteners and more. Contact us with any questions about specific products or delivery times. Do you need special screws for mechanical engineering? Special screws in small series? Do you need them quickly? Contact us – we are happy to take on challenges of all kinds and make many things possible for you!