Drive Sizes for Metric Allen Drive Screws
 Screw Diameter |
Drive Size | |||
|---|---|---|---|---|
 Socket Flat |
 Socket Button |
 Socket Cap |
 Set Screw |
|
| 1.6mm | 1.5mm | 0.7mm | ||
| 2mm | 1.5mm | 0.9mm | ||
| 2.5mm | 2mm | 1.3mm | ||
| 3mm | 2mm | 2mm | 2.5mm | 1.5mm |
| 4mm | 2.5mm | 2.5mm | 3mm | 2mm |
| 5mm | 3mm | 3mm | 4mm | 2.5mm |
| 6mm | 4mm | 4mm | 5mm | 3mm |
| 8mm | 5mm | 5mm | 6mm | 4mm |
| 10mm | 6mm | 6mm | 8mm | 5mm |
| 12mm | 8mm | 8mm | 10mm | 6mm |
| 14mm | 10mm | * | 12mm | |
| 16mm | 10mm | 10mm | 14mm | |
| * This product is not manufactured, or does not have a standardized drive size. | ||||