List of screw drives
Updated: 5/20/2026, 8:09:33 PM Wikipedia source
At a minimum, a screw drive is a set of shaped cavities and protrusions on the screw head that allows torque to be applied to it. Usually, it also involves a mating tool, such as a screwdriver, that is used to turn it. Some of the less-common drives are classified as being "tamper-resistant". Most heads come in a range of sizes, typically distinguished by a number, such as "Phillips ".
Tables
· Overview
Slotted
Slotted
Category
Slotted
Types
Slotted
Coin slot
Hi-Torque
Cruciform drives
Cruciform drives
Category
Cruciform drives
Types
Cross
Phillips
Pozidriv
Supadriv
Phillips II
Frearson / Reed & Prince
French recess
Torq-set
Mortorq
Square
Square
Category
Square
Types
Robertson
Multiple-square
Multiple-square
Category
Multiple-square
Types
LOX-Recess
Double-square
Triple-square (XZN)
Internal hex
Internal hex
Category
Internal hex
Types
Hex socket
Double hex
Pentalobular
Pentalobular
Category
Pentalobular
Types
Pentalobe
ASTER recess
Hexalobular
Hexalobular
Category
Hexalobular
Types
Torx
Torx Plus
Torx Paralobe
Torx ttap
Combination
Combination
Category
Combination
Types
Slotted/Phillips
Phillips/square
Slotted/Torx
Clutch
External
External
Category
External
Types
Hex
Square
Slotted Hex
Pentagon
External Torx
12-point
Tamper-resistant
Tamper-resistant
Category
Tamper-resistant
Types
Security Torx
Torx Plus Tamper-Resistant
Bristol
Line male
Line female
Line female anti-tamper
One-way
Oval
Polydrive (RIBE)
Security hex
Spanner
12-spline flange
Tri-angle
Tri-point
Tri-point-3
Tri-groove
Tri-wing
| Category | Types |
| Slotted | Slotted Coin slot Hi-Torque |
| Cruciform drives | Cross Phillips Pozidriv Supadriv Phillips II Frearson / Reed & Prince French recess Torq-set Mortorq |
| Square | Robertson |
| Multiple-square | LOX-Recess Double-square Triple-square (XZN) |
| Internal hex | Hex socket Double hex |
| Pentalobular | Pentalobe ASTER recess |
| Hexalobular | Torx Torx Plus Torx Paralobe Torx ttap |
| Combination | Slotted/Phillips Phillips/square Slotted/Torx Clutch |
| External | Hex Square Slotted Hex Pentagon External Torx 12-point |
| Tamper-resistant | Security Torx Torx Plus Tamper-Resistant Bristol Line male Line female Line female anti-tamper One-way Oval Polydrive (RIBE) Security hex Spanner 12-spline flange Tri-angle Tri-point Tri-point-3 Tri-groove Tri-wing |
Slot drive tool and screw sizes · Slotted drives
in
in
Blade width
in
Blade width
mm
3⁄32
3⁄32
Blade width
3⁄32
Blade width
2
Screw size
0–1
1⁄8
1⁄8
Blade width
1⁄8
Blade width
3
Screw size
2
5⁄32
5⁄32
Blade width
5⁄32
Blade width
4
Screw size
3
3⁄16
3⁄16
Blade width
3⁄16
Blade width
4
Screw size
4–5
1⁄4
1⁄4
Blade width
1⁄4
Blade width
6
Screw size
6–7
5⁄16
5⁄16
Blade width
5⁄16
Blade width
7
Screw size
8–10
3⁄8
3⁄8
Blade width
3⁄8
Blade width
9
Screw size
12–14
7⁄16
7⁄16
Blade width
7⁄16
Blade width
11
Screw size
16–18
1⁄2
1⁄2
Blade width
1⁄2
Blade width
13
Screw size
18–24
| Blade width | Screw size | |
| in | mm | |
| 3⁄32 | 2 | 0–1 |
| 1⁄8 | 3 | 2 |
| 5⁄32 | 4 | 3 |
| 3⁄16 | 4 | 4–5 |
| 1⁄4 | 6 | 6–7 |
| 5⁄16 | 7 | 8–10 |
| 3⁄8 | 9 | 12–14 |
| 7⁄16 | 11 | 16–18 |
| 1⁄2 | 13 | 18–24 |
Standard slot screwdriver sizes (ISO 2380). · Slotted drives
0
0
Thickness
(mm)
0
Width
(mm)
2
Torque
(N·m)
0
2
2
Thickness
(mm)
2
Width
(mm)
0
0
0
Thickness
(mm)
0
Width
(mm)
3
Torque
(N·m)
0
0
0
Thickness
(mm)
0
Width
(mm)
3
Torque
(N·m)
1
3
3
Thickness
(mm)
3
Width
(mm)
1
0
0
Thickness
(mm)
0
Width
(mm)
4
Torque
(N·m)
2
1
1
Thickness
(mm)
1
Width
(mm)
4
Torque
(N·m)
4
5
5
Thickness
(mm)
5
Width
(mm)
5
1
1
Thickness
(mm)
1
Width
(mm)
6
Torque
(N·m)
9
8
8
Thickness
(mm)
8
Width
(mm)
11
1
1
Thickness
(mm)
1
Width
(mm)
8
Torque
(N·m)
20
10
10
Thickness
(mm)
10
Width
(mm)
25
2
2
Thickness
(mm)
2
Width
(mm)
12
Torque
(N·m)
48
2
2
Thickness
(mm)
2
Width
(mm)
14
Torque
(N·m)
87
| Thickness (mm) | Width (mm) | Torque (N·m) |
| 0 | 2 | 0 |
| 2 | 0 | |
| 0 | 3 | 0 |
| 0 | 3 | 1 |
| 3 | 1 | |
| 0 | 4 | 2 |
| 1 | 4 | 4 |
| 5 | 5 | |
| 1 | 6 | 9 |
| 8 | 11 | |
| 1 | 8 | 20 |
| 10 | 25 | |
| 2 | 12 | 48 |
| 2 | 14 | 87 |
Phillips drive tool and fastener sizes · Cruciform drives › Phillips
| Driver size | Wood screw size | Machine screw size |
| –1 | M1 , M2 (DIN: just M1 ) or , | |
| –4 | M2 , M3 (DIN: also M2) or , , | |
| –9 | M3 , M4, M5 or –10 | |
| –16 | M6 or , 1⁄4 in., plus 5⁄16 in. if round-head | |
| –24 | M8, M10 or 3⁄8 in., 9⁄16 in., plus 5⁄16 in. if flat-head | |
| 5⁄8 in., 3⁄4 in. |
Spline socket driver sizes · Spline socket
in
in
Driver size
in
Driver size
mm
Driver size
flutes
Driver size
in
Driver size
mm
Driver size
flutes
0
0
Driver size
0
Driver size
0
Driver size
4 flutes
Driver size
0
Driver size
4
Driver size
6 flutes
0
0
Driver size
0
Driver size
1
Driver size
4 & 6 flutes
Driver size
0
Driver size
4
Driver size
6 flutes
0
0
Driver size
0
Driver size
1
Driver size
6 flutes
Driver size
0
Driver size
5
Driver size
6 flutes
0
0
Driver size
0
Driver size
1
Driver size
4 flutes
Driver size
0 OS
Driver size
5
Driver size
6 flutes
0
0
Driver size
0
Driver size
1
Driver size
6 flutes
Driver size
0
Driver size
6
Driver size
6 flutes
0
0
Driver size
0
Driver size
1
Driver size
4 flutes
Driver size
0
Driver size
7
Driver size
6 flutes
0
0
Driver size
0
Driver size
2
Driver size
6 flutes
Driver size
0
Driver size
9
Driver size
6 flutes
0
0
Driver size
0
Driver size
2
Driver size
6 flutes
Driver size
0
Driver size
11
Driver size
6 flutes
0
0
Driver size
0
Driver size
3
Driver size
6 flutes
Driver size
0
Driver size
15
Driver size
6 flutes
0
0
Driver size
0
Driver size
3
Driver size
6 flutes
| Driver size | |||||
| in | mm | flutes | in | mm | flutes |
| 0 | 0 | 4 flutes | 0 | 4 | 6 flutes |
| 0 | 1 | 4 & 6 flutes | 0 | 4 | 6 flutes |
| 0 | 1 | 6 flutes | 0 | 5 | 6 flutes |
| 0 | 1 | 4 flutes | 0 OS | 5 | 6 flutes |
| 0 | 1 | 6 flutes | 0 | 6 | 6 flutes |
| 0 | 1 | 4 flutes | 0 | 7 | 6 flutes |
| 0 | 2 | 6 flutes | 0 | 9 | 6 flutes |
| 0 | 2 | 6 flutes | 0 | 11 | 6 flutes |
| 0 | 3 | 6 flutes | 0 | 15 | 6 flutes |
| 0 | 3 | 6 flutes | |||