Definitions, explanations, symbols for screwdrivers and screwdriver bits
Types of screwdrivers, screwdriver bits, chuck bits:
Screwdriver bits:
| Type | Image | Labeling |
| Torx |  |
T, TX |
| Torx Tamper-Resistant or Security (with hole) |  |
TR, TB, TH |
| Torx 5 with hole |  |
|
| Torx Plus |  |
IP |
| Torx Plus Tamper-Resistant or Security 5-point (with hole) |  |
IPR, TS |
| Spline with twelve cam |  |
Spline XZN, ZX |
| Spline Security 12cams and hole |  |
|
| Ribe |  |
RM |
| Tri-wings |  |
TW, Y |
| Four wings, Torq |  |
TS |
| Triangle |  |
|
| Square (external) |  |
SQ, S, R |
| Quadrilateral (Robertson, Square or Scrulox) (internal) |  |
|
| Pozidriv (crosshead) |  |
PZD, PZ |
| Pozidriv (crosshead) |  |
PZD, PZ, PD |
| Philips (crosshead) |  |
PH |
| Slotted (flat, flattened) |  |
SL |
| Hexagonal, Hex (hexagon) |  |
HX, H |
| Hexagonal, Hex Security (hexagon with hole) |  |
HXS |
| Spanner head or Snake-Eyes, also known as pig nose, drilled head or twin hole (snake eyes, pig nose, twin hole) |  |
|
| Cluch, Doppelkeil |  |
C |
| Mortorq |  |
MTS |
| Butterly |  |
Cartridges:
| Type | Image | Labelling |
| Hexagonal, Hex (hexagon) | |
|
| 12-point | |
|
| Surface Drive Chuck Surface drive chucks have large holes in the six corners to create free movement that allows the chuck to slide onto a nut or bolt quickly and easily. The ideal tool for compensating for imperfect alignment of a nut or bolt. Reduces the risk of stripping edges. |
 |
SF |
| Torx | |
E |
Types of screwdriver bits:
| Standard industrial screwdriver bit |
 |
Industrial screwdriver bit Torsion |
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