Colors Of Screw Shanks; Symbols Of Screws On The Computer Body; Symbol Examples - Toshiba Satellite M40 Maintenance Manual

4 Replacement Procedures

Colors of Screw Shanks

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

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.
? Screw type
? Bind screw
? Flat-head screw
? Super flat-head screw
? Tapping screw
? Other screws

Symbol examples

? 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.)
4-8
Brown
White
Black
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
Satellite M40/M45, TECRA A4, dynabook Vx/4 Maintenance Manual
4.1 General