Drive Sizes for Phillips Screws
|
Phillips
Screw Diameter
|
Drive size |
| Machine Screws |
Sheet Metal Screws |
Wood screws |
| Flat |
Round |
| #2 |
#1 |
#1 |
#1 |
#1 |
| #3 |
N/A |
#1 |
#1 |
#1 |
| #4 |
#1 |
#1 |
#1 |
#1 |
| #5 |
N/A |
#2 |
#2 |
#2 |
| #6 |
#2 |
#2 |
#2 |
#2 |
| #7 |
N/A |
#2 |
#2 |
#2 |
| #8 |
#2 |
#2 |
#2 |
#2 |
| #9 |
N/A |
#2 |
#2 |
#2 |
| #10 |
#2 |
#2 |
#3 |
#2 |
| #12 |
#3 |
#3 |
#3 |
#3 |
| #14 |
N/A |
#3 |
#3 |
#3 |
| 1/4" |
#3 |
N/A |
| 5/16" |
#4 |
| 3/8" |
#4 |