Press-fit self-clinching nut for sheet metal. Available in zinc-plated steel (type C) and A2 stainless steel (type CS). Ideal for creating strong threads in thin sheet without prior tapping.
What is a self-clinching nut?
A self-clinching nut is a mechanical fastener cold-installed by pressing it into a pre-drilled hole. Its external serrations provide firm, durable anchoring in sheet metal and a strong internal thread with high tensile and torque resistance.
This type of nut is widely used in the automotive, electronics, metal furniture and machinery industries wherever a quick, reliable, high-quality fastening is required.
Technical features
- Cold installation by press-fitting into a pre-drilled hole.
- External serrations ensure robust anchoring.
- Rolled internal thread providing high tensile strength.
- Applications: chassis, bodywork, electronic equipment, metal furniture and household appliances.
- Available materials: zinc-plated steel (type C) and A2 stainless steel (type CS).
- Finish: corrosion-protected zinc-plated steel · A2 stainless steel for outdoor and damp environments.
Advantages of using self-clinching nuts
- Quick and simple installation without tapping the sheet beforehand.
- Provide a strong, durable metal thread in thin sheet.
- High torque-out resistance thanks to the serrated design.
- Available in two materials for different environments: indoor (zinc-plated) and outdoor or damp (stainless steel).
- Wide range of thread sizes from M2 to M10 for all types of applications.
Dimensions and codes by thread size
Metric M2
Self-clinching nut with a 2 mm thread diameter and 0,4 mm pitch. Ideal for light-duty fastening in electronic equipment and small components.
- Type C (zinc-plated steel): BF M2 C-0 · Type CS (A2 stainless steel): BF M2 CS-0
- Recommended sheet thickness: 0,8-1 mm
- Hole diameter: 4,25 mm (C) / 4,22 mm (CS)
- Max. C (head diameter): 6,3 mm
- E (serrated diameter): 4,8 mm
- T (overall height): 1,5 mm
- Minimum edge distance: 4,8 mm
Metric M2.5
Self-clinching nut with a 2,5 mm thread diameter and 0,45 mm pitch. Ideal for applications requiring an intermediate size between M2 and M3.
- Type C (zinc-plated steel): BF M2.5 C-0 · Type CS (A2 stainless steel): BF M2.5 CS-0
- Recommended sheet thickness: 0,8-1 mm
- Hole diameter: 4,25 mm (C) / 4,22 mm (CS)
- Max. C (head diameter): 6,3 mm
- E (serrated diameter): 4,8 mm
- T (overall height): 1,5 mm
- Minimum edge distance: 4,8 mm
Metric M3
Self-clinching nut with a 3 mm thread diameter and 0,5 mm pitch. One of the most widely used thread sizes for fastening electronic components and housings.
- Type C (zinc-plated steel): BF M3 C-0 · Type CS (A2 stainless steel): BF M3 CS-0
- Recommended sheet thickness: 0,8-1 mm
- Hole diameter: 4,25 mm (C) / 4,22 mm (CS)
- Max. C (head diameter): 6,3 mm
- E (serrated diameter): 4,8 mm
- T (overall height): 1,5 mm
- Minimum edge distance: 4,8 mm
Metric M3.5
Self-clinching nut with a 3,5 mm thread diameter and 0,6 mm pitch. Provides a larger thread surface than M3 without reaching the size of M4.
- Type C (zinc-plated steel): BF M3.5 C-0 · Type CS (A2 stainless steel): BF M3.5 CS-0
- Recommended sheet thickness: 0,8-1 mm
- Hole diameter: 4,75 mm (C) / 4,73 mm (CS)
- Max. C (head diameter): 7,1 mm
- E (serrated diameter): 5,6 mm
- T (overall height): 1,5 mm
- Minimum edge distance: 5,6 mm
Metric M4
Self-clinching nut with a 4 mm thread diameter and 0,7 mm pitch. Widely used in metal furniture, household appliances and bodywork.
- Type C (zinc-plated steel): BF M4 C-0 · Type CS (A2 stainless steel): BF M4 CS-0
- Recommended sheet thickness: 0,8-1 mm
- Hole diameter: 5,4 mm (C) / 5,38 mm (CS)
- Max. C (head diameter): 7,9 mm
- E (serrated diameter): 6,9 mm
- T (overall height): 2 mm
- Minimum edge distance: 6,9 mm
Metric M5
Self-clinching nut with a 5 mm thread diameter and 0,8 mm pitch. Ideal for medium-load applications in metal structures.
- Type C (zinc-plated steel): BF M5 C-0 · Type CS (A2 stainless steel): BF M5 CS-0
- Recommended sheet thickness: 0,8-1 mm
- Hole diameter: 6,4 mm (C) / 6,38 mm (CS)
- Max. C (head diameter): 8,7 mm
- E (serrated diameter): 7,1 mm
- T (overall height): 2 mm
- Minimum edge distance: 7,1 mm
Metric M6
Self-clinching nut with a 6 mm thread diameter and 1 mm pitch. One of the most popular thread sizes for medium- to high-load sheet-metal applications.
- Type C (zinc-plated steel): BF M6 C-0 · Type CS (A2 stainless steel): BF M6 CS-0
- Recommended sheet thickness: 1,2 mm
- Hole diameter: 8,75 mm (C) / 8,72 mm (CS)
- Max. C (head diameter): 11,05 mm
- E (serrated diameter): 8,6 mm
- T (overall height): 4,08 mm
- Minimum edge distance: 8,6 mm
Metric M8
Self-clinching nut with a 8 mm thread diameter and 1,25 mm pitch. For applications requiring robust fastening in thicker sheet.
- Type C (zinc-plated steel): BF M8 C-1 · Type CS (A2 stainless steel): BF M8 CS-1
- Recommended sheet thickness: 1,4 mm
- Hole diameter: 10,5 mm (C) / 10,47 mm (CS)
- Max. C (head diameter): 12,65 mm
- E (serrated diameter): 9,7 mm
- T (overall height): 5,47 mm
- Minimum edge distance: 9,7 mm
Metric M10
Self-clinching nut with a 10 mm thread diameter and 1,5 mm pitch. The largest thread size in the range, designed for high-load and structural fastening applications.
- Type C (zinc-plated steel): BF M10 C-1 · Type CS (A2 stainless steel): BF M10 CS-1
- Recommended sheet thickness: 2,31 mm
- Hole diameter: 14 mm (C) / 13,97 mm (CS)
- Max. C (head diameter): 17,35 mm
- E (serrated diameter): 13,5 mm
- T (overall height): 7,48 mm
- Minimum edge distance: 13,5 mm
Summary dimensions table
| Metric | Pitch (mm) | Type | Code | Sheet thickness (mm) | Hole diameter (mm) | Max. C (mm) | E (mm) | T (mm) | Edge distance (mm) |
|---|---|---|---|---|---|---|---|---|---|
| M2 | 0,4 | C | BF M2 C-0 | 0,8-1 | 4,25 | 6,3 | 4,8 | 1,5 | 4,8 |
| M2 | 0,4 | CS | BF M2 CS-0 | 0,8-1 | 4,22 | 6,3 | 4,8 | 1,5 | 4,8 |
| M2.5 | 0,45 | C | BF M2.5 C-0 | 0,8-1 | 4,25 | 6,3 | 4,8 | 1,5 | 4,8 |
| M2.5 | 0,45 | CS | BF M2.5 CS-0 | 0,8-1 | 4,22 | 6,3 | 4,8 | 1,5 | 4,8 |
| M3 | 0,5 | C | BF M3 C-0 | 0,8-1 | 4,25 | 6,3 | 4,8 | 1,5 | 4,8 |
| M3 | 0,5 | CS | BF M3 CS-0 | 0,8-1 | 4,22 | 6,3 | 4,8 | 1,5 | 4,8 |
| M3.5 | 0,6 | C | BF M3.5 C-0 | 0,8-1 | 4,75 | 7,1 | 5,6 | 1,5 | 5,6 |
| M3.5 | 0,6 | CS | BF M3.5 CS-0 | 0,8-1 | 4,73 | 7,1 | 5,6 | 1,5 | 5,6 |
| M4 | 0,7 | C | BF M4 C-0 | 0,8-1 | 5,4 | 7,9 | 6,9 | 2 | 6,9 |
| M4 | 0,7 | CS | BF M4 CS-0 | 0,8-1 | 5,38 | 7,9 | 6,9 | 2 | 6,9 |
| M5 | 0,8 | C | BF M5 C-0 | 0,8-1 | 6,4 | 8,7 | 7,1 | 2 | 7,1 |
| M5 | 0,8 | CS | BF M5 CS-0 | 0,8-1 | 6,38 | 8,7 | 7,1 | 2 | 7,1 |
| M6 | 1 | C | BF M6 C-0 | 1,2 | 8,75 | 11,05 | 8,6 | 4,08 | 8,6 |
| M6 | 1 | CS | BF M6 CS-0 | 1,2 | 8,72 | 11,05 | 8,6 | 4,08 | 8,6 |
| M8 | 1,25 | C | BF M8 C-1 | 1,4 | 10,5 | 12,65 | 9,7 | 5,47 | 9,7 |
| M8 | 1,25 | CS | BF M8 CS-1 | 1,4 | 10,47 | 12,65 | 9,7 | 5,47 | 9,7 |
| M10 | 1,5 | C | BF M10 C-1 | 2,31 | 14 | 17,35 | 13,5 | 7,48 | 13,5 |
| M10 | 1,5 | CS | BF M10 CS-1 | 2,31 | 13,97 | 17,35 | 13,5 | 7,48 | 13,5 |
Measurement key
- C máx.: Maximum head diameter of the self-clinching nut.
- E: Diameter of the serrated section anchored in the sheet.
- T: Overall height of the self-clinching nut.
- Minimum edge distance: Minimum recommended distance from the hole centre to the sheet edge to ensure correct anchoring.
Available materials
- Type C (zinc-plated steel): Corrosion protection for indoor and dry environments. Bright finish.
- Type CS (A2 stainless steel): Corrosion-resistant and suitable for outdoor, damp or saline environments.
Typical applications
- Fastening electronic components and housings.
- Joining panels and profiles in metal furniture.
- Chassis and bodywork in the automotive industry.
- Household appliances and industrial machinery.
- Lightweight structures and quick-fastening systems.
How to order your self-clinching nut
Select the type (C for zinc-plated steel or CS for A2 stainless steel), thread size and sheet-thickness code according to the table.
Order example: BF M6 C-0 (M6 self-clinching nut, zinc-plated steel, 1.2 mm sheet thickness)