Nuts and bolts

Nuts and bolts for stable profile connections
Our slotted nuts and bolts form the basis for secure, releasable connections in profile constructions with slot 8. Ideal for machine frames, plant equipment and modular lean systems based on the 40 mm grid.

Perfectly fitting and compatible with system profiles
Whether hammer nuts, sliding nuts, or anti-rotation versions – combined with suitable cylinder head bolts, T-bolts, or hex head bolts, a stable, permanent connection is created. Compatible with Item, Bosch Rexroth, and other Nut 8 systems.

Typical applications:
– Attaching accessories to aluminum profiles
– Connecting multiple profiles to form frames & racks
– Assembly of brackets, angles & accessories
– Retrofitting and expansion of existing systems

Order nut nuts & bolts online now
All fasteners are available for immediate delivery, metrically standardized (e.g. M4–M8) and ideal for quick assembly – buy directly from SPANNWERK.at and save time in design.

FAQ

What is the function of slotted nuts on aluminum profiles?


Slotted nuts serve as thread carriers in the profile groove and enable the secure screwing of components and accessories.

Which screws fit slotted nuts?


Depending on the nut type, cylinder head screws, countersunk screws or lens head screws are usually used, matching the thread of the slotted nut, for example M4 to M8.

Can slotted nuts be retrofitted?


Yes, many variants are roll-in or swivel-in and can be inserted laterally into the groove without exposing the profile end.

Are there differences between spring-loaded and non-spring-loaded slotted nuts?


Spring-loaded slotted nuts have a small ball or spring that holds them in position, while non-spring-loaded versions can slide freely in the slot.

What materials are commonly used for slotted nuts?


They are typically made of galvanized steel; stainless steel versions are also available for corrosion-prone environments, and lightweight plastic solutions are sometimes used.

How do I determine the correct screw length for my profile?


The screw length is determined by the material thickness of the component to be attached, any washers, and the required thread engagement in the slotted nut.

Are slotted nuts and bolts from different manufacturers compatible?


Yes, common systems like Item, Bosch Rexroth and FATH use standardized grids and slots, so the appropriate sizes are interchangeable.

What forces can be transmitted using slotted nuts?


The holding forces depend on the groove size, nut type, and bolt strength; precise values ​​are specified in the technical data sheets. These are available upon request. Please use the contact form for this purpose.

How are slotted nuts correctly installed?


They are inserted or swivelled into the groove of the profile, then the screw is screwed in and the component is fixed.

Can different types of screws be used with the same slotted nut?


Yes, as long as the thread fits, different screw head shapes can be used, such as countersunk head for flush connections or cylindrical head for flat mounting.