When installing rivets, it’s important to match the rivet diameter with the correct drill bit size to ensure a secure fit. For a 5/32" rivet, the ideal drill bit is a #21. This provides the right clearance so the rivet can be inserted smoothly and hold firmly.
| Rivet Size | Rivet Diameter (inch) | Recommended Drill Bit | Drill Bit Diameter (inch / mm) |
|---|---|---|---|
| 5/32" | 0.156" | #21 | 0.159" / 4.04 mm |
Tip:
If you’re working with softer materials like aluminum, you can use the #21 bit directly.
For harder materials (e.g., stainless steel), make sure to use a sharp, high-quality bit
to maintain hole accuracy and prevent rivet deformation.
