4055549135 Genuine Trilobular Screw 4.5 x 16mm for Electrolux Group Appliances, Thread Forming Screw

Part 4055549135 is a genuine Electrolux trilobular screw, size 4.5 x 16mm. Trilobular screws have a slightly three sided thread profile that forms its own thread as it's driven, which is why appliance makers use them for fixing into pre-punched holes. A standard hardware screw of a similar size won't grip the same way. Order 4055549135 when it's the number in your appliance's parts list.

Why a trilobular screw is worth matching

Screws go missing or get damaged during repairs more often than people expect. A trilobular screw relies on its shape to form the thread and lock in place, so it resists loosening from vibration and heat. If you swap in a different screw, it may strip the existing hole, sit too proud, or work loose and rattle. Using the exact 4.5 x 16mm screw keeps panels and brackets tight and avoids damaging the threads already formed in the appliance.

Part details

• Genuine Electrolux part 4055549135
• Trilobular thread forming screw
• 4.5 x 16mm size
• For Electrolux group appliances

Using the screw

Switch the appliance off at the wall before removing any panels. Start the screw by hand so it follows the existing thread rather than cutting a new one, then drive it in with the correct bit until it's snug. Stop as soon as it's tight, because overdriving can strip the hole. If the hole is already stripped, a new screw on its own won't fix it.

Questions about this part

How do I know this is the right screw?

Look for 4055549135 in the parts list for your appliance, or measure the old screw. It should be 4.5mm across the thread and 16mm long, with a trilobular thread. If in doubt, send your model number through the parts enquiry form.