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M3-M8 Rivet Nut Tool Kit with Mandrels
M3-M8 Rivet Nut Tool Kit with Mandrels
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Head Rivet Nut Tool Kit — M3 to M8
Put strong, reusable threads into thin metal — without welding or a power tool.
Thin sheet, tube and panel usually have nothing solid enough to take a bolt. A rivet nut solves that: you set the nut into the hole with the hand tool, and it collapses behind the material to leave a proper machine thread you can bolt into, again and again.
One Tool, Five Sizes
Five interchangeable mandrels cover M3, M4, M5, M6 and M8 — the range most automotive, furniture and fabrication jobs actually need. Swap the mandrel rather than buying a separate tool per size.
Manual by Design
The tool is operated by hand or wrench. That means direct feel for how the nut is collapsing — you can stop before you over-crush a thin panel, which is the usual failure mode with powered setters.
What It Is Made Of
- Tool and mandrels: high-strength carbon steel, built to resist stripping and bending.
- Rivet nuts: colour-plated zinc finish.
- Threads: M3, M4, M5, M6, M8.
Where It Gets Used
Automotive panels and brackets, furniture assembly, shelving, construction fixings, aviation and marine work — anywhere you need a load-bearing thread in material too thin to tap.
Works in sheet steel, aluminium, plastic panels and fiberglass.
Choose Your Kit
| Nuts only | 100 pcs — no tool. For anyone who already owns a setter. |
| Standard kit | Tool + 5 mandrels + 50 pcs nuts (10 per size). |
| Premium kit | Tool + 5 mandrels + 150 pcs nuts. Best value per nut for regular use. |
Specifications
| Thread sizes | M3, M4, M5, M6, M8 |
| Tool material | High-strength carbon steel |
| Nut material | Colour-plated zinc |
| Operation | Manual — hand or wrench operated, no drill required |
| Included (kits) | 5 x mandrels, rivet nuts as per kit, hand tool |
| Works on | Sheet metal, aluminium, pipes, plastic panels, fiberglass |
Common Questions
Do I need a power drill?
For setting the nut, no — the tool is manual. You will need a drill to make the initial hole.
What materials can I set these into?
Thin materials where tapping a thread isn't possible: sheet steel, aluminium, plastic panels and fiberglass.
Are the mandrels durable?
They are carbon steel and made for repeated manual use. Keep them straight and don't force a seized nut.
