Fastener Types - Xerox Phaser 7500 Service Manual

Service Parts Disassembly

Fastener Types

8-8
The following table lists the primary types of Posi-Drive screws used to assemble
the printer. The procedures provide dimensional specifications for screws being
removed.
Posi-Drive Screw Types used in the Printer
Type Application
Self-
tapping,
plastic
Plastic
Parts etc.
Self-
tapping,
plastic, with
flange
Plastic
Parts etc.
Sheet
Metal, silver
Sheet
Parts etc.
Metal
Sheet
Metal, with
flange
Parts etc.
Sheet
Metal, silver
with lock
washer
Sheet
Parts etc.
Metal
Caution
Use care when installing self-tapping screws in plastic. To properly start the
screw in plastic, turn the screw counter-clockwise in the hole until you feel the
screw engage the threads, then tighten as usual. Failure to properly align or
over tighten the screw can result in damage to previously tapped threads.
Always use the correct type and size screw. Using the wrong screw can
damage tapped holes. Do not use excessive force to remove or install either a
screw or a printer part.
Shape
Coarse
Coarse
Sheet
Metal
Phaser 7500 Printer Service Manual
Characteristics
1. Silver colored.
2. Screw thread is coarse
compared to metal screw.
3. Screw tip is thin.
1. Black colored.
2. Screw thread is coarse
compared to metal screw.
3. Screw has a flange.
4. Screw tip is thin.
1. Silver colored.
2. Diameter is uniform.
1. Silver colored.
2. Screw has a flange.
3. Diameter is uniform.
1. Silver colored.
2. Includes a toothed
washer.
3. Diameter is uniform.
4. Used for grounding
terminals.