| Screw Diameter | Drive Size | | | |
| Socket flat head screw | Socket button head screw | Socket cap screw | Socket set screw |
| Socket Flat | Socket Button | Socket Cap | Set Screw |
| #0 | 0.89mm (0.035″) | 0.89mm (0.035″) | 1.27mm (0.050″) | 0.71mm (0.028″) |
| #1 | 1.27mm (0.050″) | 1.27mm (0.050″) | 1/16″ | 0.89mm (0.035″) |
| #2 | 1.27mm (0.050″) | 1.27mm (0.050″) | 5/64″ | 0.89mm (0.035″) |
| #3 | 1/16″ | 1/16″ | 5/64″ | 1.27mm (0.050″) |
| #4 | 1/16″ | 1/16″ | 3/32″ | 1.27mm (0.050″) |
| #5 | 5/64″ | 5/64″ | 3/32″ | 1/16″ |
| #6 | 5/64″ | 5/64″ | 7/64″ | 1/16″ |
| #8 | 3/32″ | 3/32″ | 9/64″ | 5/64″ |
| #10 | 1/8″ | 1/8″ | 5/32″ | 3/32″ |
| #12 | 1/8″ | * | 5/32″ | 3/32″ |
| 1/4″ | 5/32″ | 5/32″ | 3/16″ | 1/8″ |
| 5/16″ | 3/16″ | 3/16″ | 1/4″ | 5/32″ |
| 3/8″ | 7/32″ | 7/32″ | 5/16″ | 3/16″ |
| 7/16″ | 1/4″ | 1/4″ | 3/8″ | 7/32″ |
| 1/2″ | 5/16″ | 5/16″ | 3/8″ | 1/4″ |
| 9/16″ | * | * | 7/16″ | 1/4″ |
| 5/8″ | 3/8″ | 3/8″ | 1/2″ | 5/16″ |
| 3/4″ | 1/2″ | 7/16″ | 5/8″ | 3/8″ |
| 7/8″ | 9/16″ | | 3/4″ | 1/2″ |
| 1″ | 5/8″ | | 3/4″ | 9/16″ |
| 1-1/8″ | 3/4″ | | 7/8″ | |
| 1-1/4″ | 7/8″ | | 7/8″ | |
| 1-3/8″ | 7/8″ | | 1″ | |
| 1-1/2″ | 1″ | | 1″ | |
* This product is not manufactured, or does not have a standardized drive size.
