Checking hours…Mon–Fri 7:30am–5pm · Sat 9am–12pm01302 279234Trade account
Hanicks
Basket
Vaillant Locking Nut 180917

Vaillant

Vaillant Locking Nut 180917

Vaillant 180917 locking nut supplied as a set of two, for use on VU 656 series and related gas boilers.

At a glance

  • Part type: locking nut
  • Also known as 1376606
Manufacturer part no.
180917
Showing prices

£43.54

£36.28 ex. VAT · VAT at 20%

Available to order · 7 working days
Available to order · 7 working days
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.Call the technical teamSend a technical question

Same-day dispatch

Ordered by 4pm Mon–Fri, 10:30am Sat.

30-day returns

Unused, in original packaging.

What it is

The Vaillant 180917 is a locking nut supplied as a set of two. It is a fastening component used on Vaillant gas boilers in the VU 656 family, where it secures a threaded connection against vibration and loosening. It is listed under screws, nuts, bolts and clips in the gas boiler spares range.

Signs this part needs replacing

  • The nut has worked loose and the joint it secures is no longer held firm
  • Visible corrosion, pitting or thread damage on the nut
  • Rounded or chewed flats where the nut has been over-tightened or removed with the wrong tool
  • Weeping or staining at the joint the nut secures
  • The nut will not hold torque and re-loosens after tightening

Before you order

  • Confirm your boiler model against the fit list above before ordering
  • Check how many nuts are required for the joint being worked on, as this part is supplied as a set of two
  • Inspect the mating thread and joint face for damage before fitting a replacement nut
  • Refer to the manufacturer's parts list if your model is not listed

Not sure which part?

Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.