|
SKETCH |
DRIVE TYPE |
USES |
TOOLS |
 |
SLOT |
Commonly found on woodscrews
and machine screws in domestic applications or where field
retightening or removal may be required.
Most suitable for hand operated tools.
Oldest and simplest drive form. |
Flat bladed
common screwdriver. |
 |
PHILLIPS
RECESS
(Type 1)
(X-Recess)
(Cross-Recess) |
Commonly found
on self tapping screws and machine screws, particularly where
they can be power assembled eg: on a production line for
domestic appliances. |
Ideal for power
operated tools and hand tools. |
 |
POZIDRIVE
RECESS
(Type II or IA)
(X-Recess) |
As above, but is
less prone to 'cam out' when drive tools are worn. |
Power operated
Pozidrive ools and Pozidrive hand tools. |
 |
Combination
(Phillips Recess & Slot)
(X-Recess or Slot) |
Most commonly
found on mush head roofing screws and machine screws, allowing
for power driven assembly and field removal or adjustment by
common blade screwdrivers. |
Power operated
drive tools and hand tools, flat slot or cross recess. |
 |
CLUTCH
(One Way)
(Jail Head) |
Security
applications usually on self-tappers, woodscrews or machine
screws, eg: domestic window locks, jail cell hinges, door lock
exposed screws.
Declining popularity. |
Conventional
flat blade screwdriver to tighten. Cannot be easily removed
without drilling and using a special removal tool. |
 |
EYE DRIVE
(Snake Eyes)® |
Security
applications, usually on self-tapping screws or machine screws
where high assembly torque is not required, eg: into plastics. |
Special hand
screwdriver with 2-pin blade. |
 |
TRI-EYE DRIVE
(3 Pin Drive) |
As above.
Also seen on golf shoe spikes or plastic inserts. |
Special hand
driver with 3-pin drive. |
 |
TRI-WING |
Security
applications usually confined to screw products, particularly in
aircraft, public transport fittings and electrical appliances
where fieldwork should only be carried out by authorised service
personnel. |
Special 3-bladed
drivers both power and hand. |
 |
HEXAGON RECESS |
Principally used
in high torque applications such as automotive, heavy equipment,
tool die sets. Commonly associated with cap screws.
(Also comes as square recess). |
Hexagon socket
key (Allen key) and hexagon power drivers. |
 |
HEXAGON |
The most common
drive on bolt products - very versatile in drive torque range;
economical to produce. |
Hand driven ring
and open ended spanners, hand or power driven with socket
drivers. |
 |
12-POINT
(Double Hexagon) |
Usually
associated with a flange head and in high torque applications
where there is a restriction on head size or where space limits
hexagon driving tools eg: inside a recess. |
12-point socket
driver.
In some circumstances a ring spanner could be used. |
 |
INTERNAL TORX® |
Gives very high
driving torque capability with low risk of 'cam out'.
Usually found in high production applications, particularly
automotive and appliance industries.
Usually restricted to screw products. |
Normally power
driven with special drive bits or hand driven with a torx® key. |
 |
EXTERNAL TORX® |
As with
12-point, usually associated with a flange head.
Very high driving torque capability.
Often found in automotive and aircraft engine applications.
Usually restricted to bolt products. |
Normally power
driven with special drive sockets.
Occasionally by hand with tension wrench and special sockets. |
 |
SQUARE |
Declining usage.
Was often used in timber bridgework and where larger driving
surface was required. Still used in a small version on square
drive cap screws. |
Hand driven with
open-ended spanner or adjustable shifter. |
 |
HEXAGON SLOT
COMBINATION |
Usually
associated with screw products. Is useful where it can be power
driven on the assembly line and removed or adjusted in service
with a blade screwdriver. Usually head is indent hex and
sometimes x-recess is also added. |
Power driven
with hexagon socket. Hand adjusted with blade screwdriver. |
