PRELOK Fasteners
Direct Screw Fixings provide a fast, economical, production line solution to fixing
plastic and light alloy components where the need for re-use and high
assembly torque is not a major factor.
The unique patented thread forms of the PT® Screw range have been
engineered to maximise the advantages of Direct Screw Fixings with forming
screws for thermoplastics and light alloy materials and cutting types for use
with thermosetting materials. |
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The PT® Type DG
The PT® Type DG is a direct screw fastener for use in light alloys. The design
incorporates many unique features which provide designers with a really
effective direct screw fixing for these materials.
The profiled thread root gives low installation torque whilst the special
thread form provides high stripping torque.
Advantages
- Thread forming - No debris
- Reliable & easy installation into
- punched, drilled, extruded &
- moulded holes
- Re-useability of screw
Special Profiled Root
- Reduces stress
- Allows material to flow during thread forming
- Reduces installation torque
-l Increases stripping torque
- Increases pull-out load
Special Shaped Tooth
- Reduces radial stress
-Maximum surface bearing area
-High stripping torque
-High clamping force
- High back-off torque
 PTDG Screw Data Sheet (pdf)
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