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The Rivet Nut Tool Mandrel M4 set includes a high hardness carbon steel mandrel and 10 zinc-plated flathead rivet nuts designed for rust resistance and heavy-duty use. Compatible with RZX and Astro riveters, this compact, lightweight kit is ideal for fastening steel, aluminum, plastic, wood, and fiberglass with professional reliability.







| ASIN | B08M3637J8 |
| Best Sellers Rank | #207,709 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #349 in Riveters |
| Brand | Amjoy |
| Color | Metallic |
| Colour | Metallic |
| Compatible Groove Diameter | 4 Millimeters |
| Customer Reviews | 4.6 out of 5 stars 580 Reviews |
| Exterior Finish | Aluminum, Zinc |
| Exterior finish | Aluminum , Zinc |
| Fastener Type | Rivet |
| Fastener type | Rivet |
| Finish Types | Polished |
| Grade Rating | Industrial |
| Inside Thread Size | M4 |
| Item Diameter | 4 Millimeters |
| Manufacturer | Amjoy |
| Material | Aluminum |
| Material Type | Aluminum |
| Maximum Shear Strength | Higher than Standard Aluminum or Plastic Nuts |
| Metal Type | Alloy Steel, Aluminum, Carbon Steel |
| Metal type | Alloy Steel, Aluminum, Carbon Steel |
| Model | AINA_US-M4 |
| Number of Pieces | 11 |
| Part Number | AINA_US-M4 |
| Screw Head Style | Flat |
| Size Name | M4 |
| Thread Class | Class 2B |
| Thread Coverage | Unthreaded |
| Thread Size | M4 |
| Thread Style | Right Hand |
| Thread Type | Iso Metric |
| Thread size | M4 |
| UPC | 779880796692 |
S**R
Strong and reliable
good product, I would but this again
A**E
Works fine
Rivnut are the perfect solution for certain situations. This thing worked fine
A**R
Great
I was surprised that this mandrel fist my Nextack rivnut tool perfectly. It was not advertised as being compatible.
Z**X
Perfect replacement for my missing phone art.
Prompt shipping, identical to the part I lost. All good.
P**2
As described—perfect fit for RZX and Astro tools
This Amjoy mandrel and rivet nut set is exactly as described. It includes M8 and M10 mandrels with 10 matching rivet nuts, and everything fits my RZX tool without issue. The threads are clean, and installation was smooth. It’s a solid spare set to keep on hand, especially if you’re working with metric sizes often. Good quality and perfect compatibility—no surprises here. Q&A Section: Q: Is this set compatible with RZX and Astro rivet tools? A: Yes, both M8 and M10 mandrels fit RZX and Astro riveters perfectly. Q: Are the rivet nuts included? A: Yes, the set includes 10 rivet nuts along with the mandrels. Q: Is this a good replacement or spare set? A: Absolutely—it’s great for replacing worn mandrels or expanding your tool’s range. Q: Is the threading on the mandrels clean and precise? A: Yes, the threading is solid and works smoothly with both nuts and tool.
Trustpilot
5 days ago
2 months ago