<s>
The	O
pentalobe	B-Operating_System
security	I-Operating_System
screw	I-Operating_System
(	O
Apple	O
nomenclature	O
)	O
,	O
or	O
pentalobe	B-Operating_System
screw	I-Operating_System
drive	O
,	O
is	O
a	O
five-pointed	O
tamper-resistant	O
system	O
used	O
by	O
,	O
but	O
not	O
limited	O
to	O
,	O
Apple	O
in	O
their	O
products	O
.	O
</s>
<s>
Pentalobe	B-Operating_System
screws	I-Operating_System
were	O
adopted	O
by	O
Apple	O
starting	O
in	O
2009	O
,	O
when	O
they	O
were	O
first	O
implemented	O
in	O
the	O
15-inch	O
MacBook	B-Device
Pro	I-Device
.	O
</s>
<s>
They	O
have	O
since	O
been	O
used	O
on	O
other	O
MacBook	B-Device
Pro	I-Device
,	O
MacBook	B-Device
Air	I-Device
and	O
iPhone	B-Operating_System
models	O
.	O
</s>
<s>
Apple	O
attracted	O
criticism	O
upon	O
the	O
introduction	O
of	O
the	O
pentalobe	B-Operating_System
screw	I-Operating_System
;	O
it	O
was	O
seen	O
by	O
some	O
as	O
an	O
attempt	O
to	O
lock	O
individuals	O
out	O
of	O
their	O
devices	O
.	O
</s>
<s>
In	O
response	O
,	O
inexpensive	O
pentalobe	B-Operating_System
screwdrivers	O
,	O
manufactured	O
by	O
third	O
parties	O
,	O
have	O
become	O
relatively	O
easy	O
to	O
obtain	O
.	O
</s>
<s>
Pentalobe	B-Operating_System
screw	I-Operating_System
sizes	O
include	O
TS1	O
(	O
0.8mm	O
,	O
used	O
on	O
every	O
iPhone	B-Operating_System
starting	O
with	O
the	O
iPhone	B-Operating_System
4	I-Operating_System
)	O
,	O
TS4	O
(	O
1.2mm	O
,	O
used	O
on	O
the	O
MacBook	B-Device
Air	I-Device
and	O
the	O
MacBook	B-Device
Pro	I-Device
with	O
Retina	O
display	O
)	O
,	O
and	O
TS5	O
(	O
1.5mm	O
,	O
used	O
on	O
the	O
2009	O
MacBook	B-Device
Pro	I-Device
battery	O
)	O
.	O
</s>
<s>
Various	O
models	O
of	O
the	O
iPod	B-Operating_System
Classic	I-Operating_System
include	O
pentalobe	B-Operating_System
screws	I-Operating_System
on	O
its	O
Toshiba	O
hard	O
drive	O
.	O
</s>
<s>
The	O
first	O
Apple	O
product	O
to	O
include	O
pentalobe	B-Operating_System
screws	I-Operating_System
internally	O
was	O
the	O
Mid	O
2009	O
MacBook	B-Device
Pro	I-Device
15-inch	O
model	O
.	O
</s>
<s>
Three	O
pentalobe	B-Operating_System
screws	I-Operating_System
were	O
used	O
to	O
attach	O
the	O
battery	O
to	O
the	O
internal	O
frame	O
.	O
</s>
<s>
This	O
was	O
the	O
only	O
internal	O
usage	O
of	O
pentalobe	B-Operating_System
screws	I-Operating_System
;	O
all	O
following	O
MacBook	B-Device
Pros	I-Device
use	O
the	O
"	O
Tri-Wing	O
"	O
security	O
bit	O
to	O
attach	O
the	O
battery	O
to	O
the	O
internal	O
frame	O
,	O
or	O
else	O
have	O
glued-in	O
batteries	O
.	O
</s>
<s>
Pentalobe	B-Operating_System
screws	I-Operating_System
reappeared	O
in	O
the	O
mid-2012	O
version	O
of	O
the	O
MacBook	B-Device
Pro	I-Device
.	O
</s>
<s>
Eight	O
3mm	O
and	O
two	O
2.3mm	O
pentalobe	B-Operating_System
screws	I-Operating_System
were	O
used	O
externally	O
to	O
attach	O
the	O
bottom	O
plate	O
of	O
the	O
case	O
to	O
the	O
internal	O
frame	O
.	O
</s>
<s>
The	O
late-2012	O
version	O
of	O
the	O
13-inch	O
MacBook	B-Device
Pro	I-Device
was	O
the	O
first	O
13-inch	O
model	O
to	O
have	O
pentalobe	B-Operating_System
screws	I-Operating_System
;	O
several	O
were	O
used	O
externally	O
in	O
a	O
similar	O
fashion	O
to	O
the	O
15-inch	O
mid-2012	O
MacBook	B-Device
Pro	I-Device
.	O
</s>
<s>
None	O
of	O
the	O
three	O
17-inch	O
models	O
of	O
the	O
MacBook	B-Device
Pro	I-Device
have	O
used	O
any	O
pentalobe	B-Operating_System
screws	I-Operating_System
.	O
</s>
<s>
The	O
MacBook	B-Device
Air	I-Device
has	O
seen	O
more	O
extensive	O
use	O
of	O
pentalobe	B-Operating_System
screws	I-Operating_System
than	O
the	O
MacBook	B-Device
Pro	I-Device
.	O
</s>
<s>
All	O
five	O
versions	O
of	O
the	O
11-inch	O
MacBook	B-Device
Air	I-Device
(	O
late-2010	O
,	O
mid-2011	O
,	O
mid-2012	O
,	O
mid-2013	O
and	O
early-2014	O
)	O
include	O
eight	O
2.5mm-long	O
and	O
two	O
8mm-long	O
external	O
pentalobe	B-Operating_System
screws	I-Operating_System
.	O
</s>
<s>
The	O
last	O
five	O
versions	O
of	O
the	O
13-inch	O
MacBook	B-Device
Air	I-Device
(	O
late-2010	O
,	O
mid-2011	O
,	O
mid-2012	O
,	O
mid-2013	O
and	O
early-2014	O
)	O
use	O
eight	O
2.6mm-long	O
and	O
two	O
9mm-long	O
pentalobe	B-Operating_System
screws	I-Operating_System
.	O
</s>
<s>
Pentalobe	B-Operating_System
screws	I-Operating_System
have	O
been	O
used	O
only	O
externally	O
on	O
MacBook	B-Device
Air	I-Device
models	O
.	O
</s>
<s>
Third-party	O
manufacturers	O
have	O
marketed	O
a	O
variety	O
of	O
5-point	O
screwdrivers	O
that	O
fit	O
pentalobe	B-Operating_System
screws	I-Operating_System
on	O
MacBook	O
models	O
since	O
pentalobe	B-Operating_System
screws	I-Operating_System
first	O
appeared	O
externally	O
in	O
the	O
late-2010	O
MacBook	B-Device
Air	I-Device
.	O
</s>
<s>
The	O
original	B-Operating_System
iPhone	I-Operating_System
had	O
no	O
screws	O
holding	O
the	O
body	O
together	O
.	O
</s>
<s>
The	O
iPhone	B-Operating_System
3G	I-Operating_System
and	O
the	O
iPhone	B-Operating_System
3GS	I-Operating_System
had	O
two	O
#00	O
Phillips	O
screws	O
next	O
to	O
the	O
30-pin	O
Dock	O
Connector	O
.	O
</s>
<s>
Pentalobe	B-Operating_System
screws	I-Operating_System
were	O
first	O
used	O
in	O
the	O
iPhone	B-Operating_System
4	I-Operating_System
.	O
</s>
<s>
At	O
first	O
,	O
#00	O
Phillips	O
screws	O
were	O
used	O
,	O
but	O
later	O
iPhone	B-Operating_System
4	I-Operating_System
models	O
had	O
pentalobe	B-Operating_System
screws	I-Operating_System
.	O
</s>
<s>
If	O
brought	O
in	O
to	O
an	O
Apple	O
Store	O
for	O
repair	O
,	O
iPhone	B-Operating_System
4	I-Operating_System
models	O
with	O
#00	O
Phillips	O
screws	O
,	O
if	O
any	O
,	O
were	O
replaced	O
with	O
0.8mm	O
pentalobe	B-Operating_System
screws	I-Operating_System
.	O
</s>
<s>
Third-party	O
manufacturers	O
rushed	O
to	O
produce	O
screwdrivers	O
that	O
would	O
remove	O
0.8mm	O
pentalobe	B-Operating_System
screws	I-Operating_System
after	O
the	O
iPhone	B-Operating_System
4	I-Operating_System
's	O
release	O
in	O
June	O
2010	O
.	O
</s>
<s>
These	O
inexpensive	O
,	O
easily	O
purchased	O
drivers	O
will	O
remove	O
pentalobe	B-Operating_System
screws	I-Operating_System
quite	O
easily	O
.	O
</s>
<s>
Many	O
are	O
sold	O
as	O
"	O
kits	O
"	O
containing	O
a	O
5-point	O
driver	O
and	O
Phillips	O
#00	O
screws	O
,	O
in	O
order	O
to	O
replace	O
pentalobe	B-Operating_System
screws	I-Operating_System
with	O
easily	O
removable	O
Phillips	O
screws	O
.	O
</s>
<s>
All	O
iPhone	B-Operating_System
4S	I-Operating_System
models	O
contain	O
identical	O
pentalobe	B-Operating_System
screws	I-Operating_System
to	O
those	O
found	O
on	O
the	O
iPhone	B-Operating_System
4	I-Operating_System
.	O
</s>
<s>
The	O
iPhone	B-Operating_System
5	I-Operating_System
has	O
very	O
similar	O
0.8mm	O
pentalobe	B-Operating_System
screws	I-Operating_System
,	O
but	O
the	O
screws	O
have	O
longer	O
3.6mm	O
shafts	O
.	O
</s>
<s>
Sony	O
used	O
5-point	O
pentalobe	B-Operating_System
screws	I-Operating_System
(	O
though	O
mostly	O
simply	O
referred	O
as	O
'	O
star	O
shaped	O
 '	O
screws	O
pre-dating	O
the	O
currently	O
accepted	O
name	O
)	O
on	O
its	O
Sony	B-Device
CLIÉ	I-Device
UX	I-Device
Series	I-Device
PDAs	O
in	O
2003	O
.	O
</s>
<s>
Huawei	O
used	O
pentalobe	B-Operating_System
screws	I-Operating_System
for	O
the	O
Huawei	O
P9	O
,	O
a	O
decision	O
criticised	O
by	O
Kyle	O
Wiens	O
writing	O
for	O
Wired	O
,	O
because	O
using	O
pentalobe	B-Operating_System
screws	I-Operating_System
instead	O
of	O
standard	O
screws	O
like	O
Torx	O
makes	O
electronics	O
more	O
difficult	O
to	O
repair	O
.	O
</s>
<s>
Its	O
successor	O
,	O
the	O
Huawei	B-Application
P10	I-Application
,	O
also	O
used	O
pentalobe	B-Operating_System
screws	I-Operating_System
to	O
secure	O
the	O
back	O
cover	O
to	O
the	O
phone	O
.	O
</s>
<s>
Like	O
Huawei	O
P9	O
,	O
Meizu	O
MX9	O
also	O
uses	O
the	O
pentalobe	B-Operating_System
screw	I-Operating_System
next	O
to	O
the	O
USB-C	O
connector	O
.	O
</s>
<s>
+	O
Pentalobe	B-Operating_System
sizes	O
P	O
sizes	O
TS	O
sizes	O
PL	O
sizes	O
Dimension	O
Usage	O
P1	O
TS0	O
P2	O
TS1	O
PL1	O
0.8	O
mm	O
iPhone	B-Operating_System
4	I-Operating_System
(	O
Late	O
)	O
,	O
4S	O
,	O
5	O
,	O
5C	O
,	O
5S	O
,	O
6	O
,	O
6	O
Plus	O
,	O
6S	O
,	O
6S	O
Plus	O
,	O
SE	O
,	O
7	O
,	O
7	O
Plus	O
,	O
8	O
,	O
8	O
Plus	O
,	O
iPhone	B-Operating_System
X	O
,	O
Huawei	O
P9	O
P3	O
TS2	O
PL2	O
0.9	O
mm	O
Apple	O
Watch	O
Band	O
,	O
M1.2	O
thread	O
P4	O
TS3	O
PL3	O
1.1	O
mm	O
P5	O
TS4	O
PL4	O
1.2	O
mm	O
MacBook	B-Device
Air	I-Device
and	O
MacBook	B-Device
Pro	I-Device
with	O
Retina	O
Display	O
P6	O
TS5	O
PL5	O
1.5	O
mm	O
MacBook	B-Device
Pro	I-Device
(	O
2009	O
)	O
Battery	O
–	O
15″	O
only	O
.	O
</s>
<s>
These	O
pentalobe	B-Operating_System
,	O
5	O
point	O
heads	O
are	O
not	O
to	O
be	O
confused	O
with	O
Torx	O
heads	O
which	O
have	O
6	O
points	O
.	O
</s>
<s>
It	O
is	O
possible	O
that	O
ambiguous	O
"	O
TS	O
"	O
nomenclature	O
is	O
the	O
same	O
as	O
the	O
"	O
PL	O
"	O
designation	O
when	O
referring	O
to	O
Pentalobe	B-Operating_System
screws	I-Operating_System
.	O
</s>
<s>
For	O
example	O
,	O
the	O
PL2	O
screw	O
used	O
on	O
the	O
lugs	O
that	O
hold	O
the	O
Apple	O
Watch	O
Band	O
is	O
called	O
"	O
Pentalobe	B-Operating_System
1.1	O
"	O
.	O
</s>
