Color Of Screw Shaft; Marking Of Screws On The Computer Body - Toshiba Portege M100 Maintenance Manual

4.1 General

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:
Screws whose lengths are indicated to 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 flat-head screw
Tapping screw
Other screws
(Unique screws, stud, etc.)
Examples:
6 mm bind screw
12 mm bind screw
5 mm stud
(Indicates the screwed length in round number regardless the length of the stud.)
PORTEGE M100 Maintenance Manual (960-452)
brown
white
blue
Symbol
B
F
S
T
U
B6
B12
U5
4 Replacement Procedures
4-7