Self-clinching fasteners in sheet metal parts
We insert self-clinching nuts, studs, standoffs and similar elements so the part is ready for final assembly.
Nuts · Studs · Standoffs
What are self-clinching fasteners?
A self-clinching fastener is an element — a nut, a stud, a standoff — anchored into the sheet by deforming the material itself, with no welding or adhesive. The part leaves the plant with the fixing point already built in.
It solves the classic thin-sheet problem: there is not enough material for a reliable thread. Instead of welding a nut on — with the distortion and rework that brings — an element designed for the job is pressed in, and the part stays flat.
It is an operation planned from the start, because the seat has to be cut to the exact size of the fastener during cutting or punching.
Materials and thicknesses for self-clinching fasteners
Metals and sheet thicknesses we work with as standard. If your industrial project needs a material that is not in the table, say so in your enquiry and our engineering office will confirm whether we can handle it.
This service works with the same materials and thicknesses as the rest of the plant. The full table is on the Sheet metal laser cutting page.
CAD file formats accepted for quoting
- DXF
- DWG
- STEP / STP
- STL
- IGS / IGES
- PNG
- JPG
With DXF, DWG or STEP we work straight from your file geometry: no need to redraw the part, and the quote comes back sooner.
We do more than check the drawing: we advise you on nesting (how the sheet is used) so you get the lowest possible price per part before anything is cut.
How our engineering office works
If you would rather not fill in the form, send the drawing straight to cata@catagermans.com.
Confidential handling. Your drawings are only used to prepare the technical assessment and are not shared with third parties. If you need a signed non-disclosure agreement, send it over.
Technical capabilities for self-clinching fasteners
| Elements | Self-clinching nuts, studs, standoffs and similar fasteners |
|---|---|
| Fixing method | Anchored by deforming the sheet, without welding |
| Preparation | Seat produced at laser cutting or punching |
Applications and types of custom metal parts
- Threaded fixing points in thin sheet.
- Enclosures and covers that are bolted together at assembly.
- Standoffs maintaining spacing between components.
- Parts that must stay flat and cannot take a welded nut.
Sectors we manufacture for
We manufacture for industrial companies across very different sectors. These are some of the most common ones, but not the only ones: if yours is not listed, tell us about the part and we will confirm whether we can make it.
- Automotive
- Food industry (stainless steel)
- Agricultural machinery
- Construction
- Steel structures
- Energy
- Street furniture
Why work with Catà Germans
- Every process under one roof
- Cutting, forming, machining, welding and finishing in the same plant. We handle the whole logistics side so you receive the parts palletised and protected at your own factory, anywhere in Catalonia and the surrounding area, on the agreed lead time.
- In-house engineering office
- We review the drawing before manufacturing and prepare production from CAD/CAM. If something does not add up, we ask you instead of interpreting it ourselves. And if what you have is a sketch or a question, we will help with that too: advice is part of the service.
- From drawing to finished product
- Some finishes, such as painting or zinc plating, are done with specialist workshops. We handle the coordination and deliver with our own fleet: a single order and a part ready to fit.
- Raw material in stock
- We keep sheet and tube permanently in stock, so many standard jobs can start without waiting for material.
- Over 65 years of the trade
- A family business founded in 1958, specialised in industrial subcontracting of metal parts. You deal directly with the people who make the part.
Frequently asked questions
01Self-clinching fasteners
What is a self-clinching fastener?
It is an element — a nut, a stud, a standoff — anchored into the sheet by deforming the material itself, with no welding or adhesive. The part leaves the plant with the fixing point already in place.
Which elements can you insert?
- Nuts
- Screws and studs
- Standoffs
- Other self-clinching elements
What problem do they solve?
That of thin sheet, which often lacks the thickness for a reliable thread. Instead of welding on a nut, with the distortion and rework that brings, an element designed for the job is inserted and the part stays flat.
02When to use them
When is it better than welding a nut?
Above all in thin sheet and in parts that must stay flat or have a visible face: insertion adds no heat, so it does not distort the part or mark the other side.
When is a direct thread enough?
In thicker material direct tapping is normally enough. We assess it from the drawing and suggest the most suitable option.
Which parts are they used in?
- Threaded fixing points in thin sheet
- Housings and covers that are screwed together at assembly
- Standoffs that keep components at a set distance
- Parts that cannot take a welded nut
03Design and preparation
Should it be shown on the drawing?
Yes, ideally. The hole is made during cutting or punching and must match the element exactly. If you tell us the intended part number or what the fixing point is for, our engineering office prepares it.
Which part numbers do you use?
We work with the self-clinching elements commonly available on the market. Tell us what joint you need and we will confirm the right element with the quote.
Can they be inserted into bent parts?
Yes. It is common in bent sheet housings and covers that are screwed together at assembly.
04Engineering office and confidentiality
Does my file need redrawing to quote for self-clinching fasteners?
No. With DXF, DWG or STEP we work directly on the geometry in your file: the part does not need redrawing and the quote comes back sooner. We work mainly with SolidWorks and AutoCAD, among other CAD and CAM tools.
Are my drawings treated confidentially?
Yes. Drawings are used only to prepare the technical assessment and are not shared with third parties. If you need a signed confidentiality agreement, you can send it to us.
What if I only have a sketch or a technical question?
Send us a dimensioned sketch or tell us what you need. Our engineering office reviews it, asks whatever it needs to and, if necessary, helps you define the part: advice is part of the service, for metalworkers and small workshops too.
05Process, lead times and delivery
What happens after I send my request?
- Enquiry: you send the drawing, material, thickness, quantity and deadline
- Review by our engineering office and manufacturing plan
- Quote and confirmation, with alternatives where there are any
- Manufacturing within the same plant
- Inspection, packing and delivery
What lead time does a self-clinching fasteners order have?
It depends on the part, the quantity and the other processes involved. In the quote request you can choose a 24/48 h urgent service (with a surcharge), about one week, a flexible deadline or a specific date, and we confirm it with the quote.
Do you have to wait for material before starting?
For many routine orders, no. We keep sheet and tube in permanent stock, so manufacturing can start without waiting for material.
Can you deliver the parts to our factory?
Yes, with our own fleet. We prepare the load and deliver the parts palletised and protected to the agreed point. We usually serve the provinces of Tarragona and Barcelona, and look at other destinations case by case.
06Sectors and experience
Which sectors do you provide self-clinching fasteners for?
We manufacture for industrial companies in very different sectors. Some of the most common:
- Automotive
- Food industry (stainless steel)
- Agricultural machinery
- Construction
- Structural steelwork
- Energy
- Street furniture
They are common in thin-sheet housings, covers and equipment, in automotive, energy and industrial equipment. If your sector is not listed, tell us about the part and we will confirm whether we can make it.
Why choose Catà Germans for self-clinching fasteners?
We are a family company founded in 1958, with more than 65 years in industrial subcontracting of metal parts.
- Every process under one roof: cutting, forming, machining, welding and finishing
- Our own engineering office, which reviews the drawing before manufacturing
- Direct contact with the people who make the part
- One order and one point of contact, right through to delivery
07Quotes, files and orders
Which file formats do you accept?
We accept PDF, DXF, DWG, STEP/STP, STL, IGS/IGES and also PNG or JPG images. If you do not have a final drawing yet, send us a dimensioned sketch and we will review it all the same.
Do you make one-off parts or only production runs?
We handle one-off parts and prototypes as well as small, medium and large batches and repeat production. You can specify this in the quote request.
How quickly do you reply to an enquiry?
We send the technical response as soon as possible once we have the drawing and the part details.
Do you offer painting, zinc plating or other surface finishes?
You can include them in the order. These finishes are carried out with specialist workshops we work with regularly, but we handle the coordination and the transport: you place a single order and receive the finished part.
Can I combine several processes in one part?
Yes — that is the normal way we work. A part can go through laser cutting, bending, welding and finishing inside the same plant, under a single order and a single point of contact.
Request information or a quote
Send us the drawing and the part details and we will come back with a technical answer as soon as possible.
Reply as soon as possible