Screw & Bolt Size Chart
Reference chart for imperial screw sizes and metric bolt sizes with dimensions and common uses.
| Size | Diameter | TPI | Pilot Drill | Common Use |
|---|---|---|---|---|
| #2 | 0.086" | 56 | 3/32" | Electronics, hinges |
| #4 | 0.112" | 40 | 7/64" | Light hardware |
| #6 | 0.138" | 32 | 9/64" | Cabinets, trim |
| #8 | 0.164" | 32 | 11/64" | General purpose |
| #10 | 0.190" | 24 | 13/64" | Shelving, framing |
| #12 | 0.216" | 24 | 7/32" | Heavy duty |
| 1/4" | 0.250" | 20 | 17/64" | Structural |
| 5/16" | 0.3125" | 18 | 21/64" | Structural |
| 3/8" | 0.375" | 16 | 25/64" | Heavy structural |
| 1/2" | 0.500" | 13 | 33/64" | Heavy structural |
How to Use
- Select Imperial or Metric tab.
- Find your screw/bolt size and required dimensions.
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