Fitting bolts – standard and custom designs directly from the manufacturer
- Customized fitting bolts starting from a quantity of 1 according to drawing
- Large selection of standard screws up to M100 – some immediately from stock or manufactured at short notice
- High quality basic material resistant to corrosion, heat and mechanical stress
We manufacture fitting bolts in various nominal diameters M12, M16, M20 up to M100, which are used for particularly massive constructions. In addition, we at ASO Schrauben also manufacture drawing parts individually for you.
Our fasteners impress with accuracy, strength and tested quality.
Fitting bolts from ASO Schrauben in detail
Whether DIN 609, DIN 610, shoulder fitting bolt ISO 7379, A4 stainless steel screws or common dimensions
Fitting bolts offer:
- exact positioning
- play-free guidance
- high power transmission
- durable, corrosion-resistant materials
- perfect repeatability
- reliable assembly even in demanding environments
Fitting bolts are the appropriate choice for demanding constructions in industry, mechanical engineering and any situation in which perfection is crucial. We at ASO Schrauben will be happy to advise you and manufacture your screw according to your requirements.
Planning reliability
We guarantee that delivery dates will be met according to the order confirmation, so that you can implement your projects reliably and without delays.
Flexibility
Our offer and service include express service, short-term changes to ongoing orders, and fast delivery times even during peak periods.
Experience
Our many years of experience enable the reliable and individual production of connecting parts – even in very small quantities.
Tested Quality
We use certified EU pre-material with certificate allocation, so that you can rely on tested quality and maximum safety.
Our standard-compliant fitting bolts
Fitting bolts according to DIN 609
The DIN 609 fitting bolt is one of the most commonly used variants. It has a hexagonal head, a cylindrically turned shaft with fitting dimensions and a defined thread end. The precise tolerance of the shaft creates a play-free guide in the bore, so that components can be positioned exactly and permanently reproducibly. Fitting bolts DIN 609 are often used in stationary constructions where high strength and exact alignment are crucial.
Fitting bolts according to DIN 610
This version of the fitting bolt DIN 610 has an extended thread and is used when thicker components are joined or larger screw-in depths are required. Here, too, the exactly toleranced shaft ensures highly precise position fixing.
Shoulder fitting bolts according to ISO 7379
The shoulder fitting bolt (ISO 7379) has an enlarged shaft diameter – the so-called shoulder – and is used especially for movable connections, guides or sliding mechanisms. The shoulder area is precisely ground (e.g. tolerance class h8 or f9), which makes the screw ideal for axle and guide functions.
Typical applications: Swivel mechanisms, joints, linear guides, movement sequences in tool and mold making.
Materials & surfaces for the highest requirements of fitting bolts
The selection of the right material is crucial for the performance and service life of a fitting bolt. Depending on the application, different metallic materials are used. Our fitting bolts are available in various materials and coatings:
Steel plain / galvanized – cost-efficient & proven
Stainless steel A2 (V2A) / A4 (V4A) – for particularly humid, salty or aggressive environments
Black fitting bolts – galvanically zinc-plated, burnished or phosphated
Special materials – e.g. heat-resistant steels or duplex steels
You can find an overview of all available materials on our separate material page
Specialist for special fasteners in pressure equipment construction
We offer you reliability in safety-critical applications.
A particular focus of ASO Schrauben is, among other things, the production of special fasteners for pressure equipment. Our connecting elements are used wherever maximum safety, material quality and manufacturing precision are required – for example in pressure vessels, flange connections, heat exchangers, valves or steam systems, in turbine construction and in classic mechanical engineering.
Thanks to many years of experience and modern manufacturing technologies, we produce screws according to drawings or special standard specifications – even from a quantity of 1!
Our production meets the strict requirements of the Pressure Equipment Directive (PED 2014/68/EU) and relevant regulations such as AD 2000-Merkblatt W0. The corresponding certificates (e.g. 3.1 / 3.2 according to EN 10204) document the quality and traceability of our products – a clear added value for safety-critical applications.
Advantages of a fitting bolt from ASO Schrauben
- Extensive warehouse with standard sizes immediately available
- Express production for short-term needs
- Certified quality according to DIN EN ISO 9001, AD W2000, QS system according to PED 2014/68/EU
- On request: factory certificates, material test certificates, acceptance tests
Good to know: Fitting bolts in detail
Fitting bolts are indispensable connecting elements when precise component positioning, play-free guidance and repeatable assembly accuracy are important. They are always used when normal screws do not allow a sufficiently exact position fixing due to their larger tolerance range. Especially in mechanical engineering, fixture construction and mold making, fitting bolts ensure perfect alignment and secure power transmission.
Due to their ground or tightly toleranced shaft, fitting bolts not only take over a classic screwing function, but also act as fitting pins, but with the advantage that they are removable, adjustable and service-friendly.
Fitting bolts are available in numerous dimensions or according to drawing. With the specification fitting bolt M6, a metric thread with a nominal diameter of 6.0 mm is defined. This thread designation is not only uniform for screws, but also for nuts and metric threaded rods.
Technical advantages of fitting bolts
Precise component guidance
Due to the tightly toleranced shaft, fitting bolts guarantee a play-free alignment of the mounted components.
Higher load capacity
Unlike pure fitting pins, fitting bolts take over both the fitting function and the screwing function. Thus, they are suitable for combined force-fit and form-fit connections.
Perfect repeatability
For assemblies that have to be dismantled and reassembled regularly.
Reduction of wear and vibrations
The play-free fit prevents micro-movements that can lead to wear or noise under dynamic loads.
Highest dimensional accuracy thanks to defined tolerances
The typical tolerances (h8, f9) ensure a perfect fit in fitting bores.
We manufacture everything for you - whether according to European or international standard!
Our special fasteners are used where standard solutions do not fit – for example, at high pressure, extreme temperatures, or aggressive media. Special fasteners made of special TÜV-tested pre-material are often the only solution in the industry for reliably implementing complex, safety-relevant applications.
At ASO Schrauben, the perfect connection is our focus – not only technically, but also in cooperation with our customers. With individual solutions and high quality, we support your projects precisely.
Mathias Koll
Managing Director ASO Schrauben
Application areas of our fitting bolts
Mechanical engineering
- Precision connections
- Guide elements
- movable axles and articulated connection points
Fixture and plant construction
- exact alignment of tool holders
- Mounting of stops, guide rails and reference points
Mold and tool making
- exact centering of tool halves
- play-free guidance in production plants
Automation technology
- Fixing of robot modules
- precise positioning of sensor elements and peripherals
Vehicle construction and mobility applications
- structural guidance tasks
- safe, repeatable connections
Our other types of fasteners
Special screws and custom screws can be designed in very different designs and functional types. Our standard screw types include stud bolts, threaded rods, and studs, which are frequently used in pressure equipment or flange connections. Other variants include socket head cap screws, eye bolts or special screws with special thread forms. The combination of different head shapes, thread types, and materials results in highly specialized connecting elements that are precisely tailored to your requirements.
Strong Connections since 1948
As a manufacturer of special fasteners and connecting parts according to standards, we manufacture precisely, certified and according to your individual specifications
Request now without obligation