Toshiba Satellite M500 Maintenance Manual page 152

4 Replacement Procedures
Color of Screw Shaft
To avoid mistakes on the screw length, screw shafts are colored as follows:
 Even number length screw:
 Odd number length screw:
 Special length screw:
one or more decimal places such as 2.5 mm or 2.8 mm.)
Marking of Screws on the Computer Body
To make maintenance of the computer easier, markings of the kinds of the screws
including the types and lengths of the screws are indicated on the computer body.
Kind of screws
 BIND screw
 FLAT HEAD screw
 SUPER THIN HEAD screw
 TAPPING screw
 Other screws
(Unique screws, STUD, etc.)
Examples:
 6 mm BIND screw
 12 mm BIND screw
 4 mm FLAT HEAD screw
(Indicates the screwed length in round number regardless the length of the stud.)
SatelliteM500/M500D Maintenance Manual [CONFIDENTIAL]
brown
white
blue (Screws whose lengths are indicated to
Symbol
B
F
S
T
U
B6
B12
F4
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