Colors Of Screw Shanks; Symbols Of Screws On The Computer Body; Symbol Examples - Toshiba TECRA S1 Maintenance Manual

4.1 General

Colors of Screw Shanks

For easy identification of the correct screws, the screw shanks are colored according to their
lengths, as follows:

Symbols of Screws on the Computer Body

For easy maintenance, the screw types are shown on the computer body as symbols. A
symbol consists of a letter representing the screw type and a numeral representing the screw
length.

Symbol examples

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Screws of an even-numbered length
Screws of an odd-numbered length
Screws of a special length
Screws of a special length are those of a length having decimal places, such as 2.5
mm and 2.6 mm.
Screw type
Bind screw
Flat-head screw
Super flat-head screw
Tapping screw
Other screws
6 mm bind screw
12 mm bind screw
5 mm stud
(The numeral represents the rounded length of the threaded portion irrespective of the
entire stud length.)
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Brown
White
Blue
Letter
B (stands for bind)
F (stands for flat-head)
S (stands for super flat-head)
T (stands for tapping)
U (stands for unique-pan head screws, studs, etc.)
B6
B12
U5
4 Replacement Procedures
4-7