Brother HL-3450CN Service Manual page 212

Class Code Name of Screw
BT3x8
BT3x12
Cross head tapping
screw
BT4x8
BT4x10
ST3x6
S tight screw
ST4x6
Cross head tapping
M4x6
screw (Pan head)
M4x6 Cross head screw
(Brass)
SP3x10 Unique screw for
heater connector.
Cross head screw
F3x6
with flange.
Unique screw for
SP4x9
panel case
Cross head screw
M3x6
with washer.
Cross head S tight
FST3x10
screw with flange.
Table 7-1: Table of Screw Sizes Used in the Printer
Size and Shape of Screw
M-Thread
TS
T3
T3
T4
T4
T4
ST
M4
M4
M3
M3
M4
M3
FST
Length Sharp
8mm
10mm
6mm
8mm
10mm
6mm
6mm
6mm
10mm
6mm
10mm
9mm
6mm
10mm
7-5
HL-3450CN SERVICE MANUAL
Remarks
Used for
plastic parts.
Used for steel
parts fitted to
steel plates.
Used for
frame.
Used for
GND.
Used for the
fusing unit
4
connector.
1 0
For laser unit
Used for the
4
panel case.
9
Used for the
fusing unit.
Used for
fusing unit.