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Worcester Bosch Screw and Washer Assembly M5 x 30mm 87161064520

Worcester Bosch

Worcester Bosch Screw and Washer Assembly M5 x 30mm 87161064520

Worcester Bosch M5 x 30mm screw and washer assembly, part 87161064520, for sealing joints inside Greenstar and other Worcester Bosch appliances.

At a glance

  • Part type: bolts, nuts and screws
  • Also known as 1021014
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Manufacturer part no.
87161064520
GC number
H08-796
Showing prices

£3.89

£3.24 ex. VAT · VAT at 20%

Available to order · 3 working days
Available to order · 3 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 Worcester Bosch screw and washer assembly is an M5 x 30mm fixing and sealing component used inside Worcester Bosch heating appliances. The washer sits against the joint face to form a seal between pipework and the surrounding parts, helping to keep gas, air and water contained within the system. It is used at several points in the appliance, including the heat exchanger, gas valves and expansion vessels.

Signs this part needs replacing

  • Weeping or damp traces around a joint on the heat exchanger, gas valve or expansion vessel
  • Corrosion, pitting or rust staining on the screw or washer
  • A washer that has hardened, flattened or cracked with age
  • A slack fixing that no longer pulls the joint down tight
  • A drop in system pressure or a smell of gas traced back to a sealed joint

Before you order

  • Check the GC number or the appliance serial plate to confirm the part matches your model.
  • The alternative number 1021014 may appear on older documentation for the same item.
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.

Not sure which part?

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