Worcester Bosch Screw KB 40x25 WN 1411 29142113090

The Worcester Bosch 29142113090 is a clip screw, listed by the manufacturer as type KB 40x25 WN 1411. It is a Worcester Bosch fastener supplied within the clips, screws and springs range of boiler spares. The screw is used in the assembly of Greenstar i System appliances, where it retains clips, brackets and associated components inside the casing.

• The screw head is rounded or chewed, so the correct driver no longer bites cleanly.
• Corrosion or surface rust on the shank or thread, common where a fixing sits in a damp part of the casing.
• The thread is stripped or the screw spins without tightening into its clip or captive nut.
• The screw has been dropped or lost during a service or strip-down and the fixing point is left open.
• A clip or bracket held by the screw is loose, allowing movement or rattle inside the appliance.

• Check the GC number on the appliance data badge against the compatibility list to confirm the model.
• Confirm the part number 29142113090 matches the fixing you are replacing, as several similar Worcester Bosch screws are used across the Greenstar range.
• If the screw retains a clip or seal that has also degraded, check whether that component needs ordering at the same time.
• This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.