Screwdriver Sizes Chart
Quick answer: the most common household screwdriver sizes are Phillips #1 and #2, slotted 1/8 in to 1/4 in blade widths, and Torx T10 to T30 for many appliance, bike, and automotive jobs. Use the largest driver that fully seats without wobble.
Common Screwdriver Sizes Chart
| Drive type | Common sizes | Typical screw range | Fit note |
|---|---|---|---|
| Phillips | #000, #00, #0, #1, #2, #3, #4 | Electronics through construction screws | #2 is the common household size |
| Slotted / flat | 1/8, 3/16, 1/4, 5/16 in blades | Cabinet, electrical, older screws | Blade should fill slot width and thickness |
| Torx | T5-T40 common | Electronics, bikes, appliances, automotive | Do not confuse T bits with external E sockets |
| Pozidriv | PZ0-PZ4 | European and construction screws | Do not mix with Phillips when torque matters |
| Robertson / square | #0, #1, #2, #3 | Wood screws and deck/construction screws | #2 square is common |
| Hex / Allen | SAE and metric hex keys | Set screws, furniture, socket head screws | Use exact size to avoid rounding |
Phillips Screwdriver Size Guide
| Phillips size | Typical screw size | Common use |
|---|---|---|
| #000 / #00 | Very small screws | Electronics, glasses, precision work |
| #0 | #0-1 screws | Small electronics and hardware |
| #1 | #2-4 screws | Small cabinet and machine screws |
| #2 | #5-10 screws | Most general household screws |
| #3 | #10-16 screws | Larger machine and construction screws |
| #4 | #18-24 screws | Large fasteners |
How To Avoid Stripping Screws
- Use the largest driver that fully seats in the recess.
- Keep pressure straight in line with the screw.
- Replace worn bits before they cam out.
- Use JIS, Pozidriv, Torx, square, or hex bits when the fastener calls for them.
Related references: Allen wrench size chart, external Torx size chart, and socket sizes in order.
Source Notes
Drive-size notes were checked against screw-drive references including Wiha screw profile guidance, Wiha Torx screw charts, RS Components screwdriver guide, and standard screw-drive size references. Fastener makers can vary, so fit the actual screw before applying torque.
