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Alpha Cap Screw M5 x 28mm Socket Head 1.023012

Alpha

Alpha Cap Screw M5 x 28mm Socket Head 1.023012

M5 x 28 mm socket head cap screw from Alpha, used to secure the cold water inlet manifold on compatible Alpha gas boilers.

At a glance

  • Also known as CAPSCREW-M5-X-28-SOCKET-HEAD, 1257829
Manufacturer part no.
1.023012
Showing prices

£1.91

£1.59 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 Alpha 1.023012 is an M5 x 28 mm socket head cap screw. It is used to secure the cold water inlet manifold on compatible Alpha gas boilers. The hex socket head allows the screw to be driven with a hex key where access around the manifold is restricted.

Signs this part needs replacing

  • Corrosion or rust on the screw head or threads
  • Rounded or stripped hex socket that will not take a key
  • Water staining or weeping around the manifold joint
  • Screw seized in the thread or snapped during removal
  • Manifold fixing loose because the screw no longer holds torque

Before you order

  • Confirm the removed screw is M5 x 28 mm and matches the socket head type
  • Check the appliance model against the fit list above
  • Inspect the manifold and its seal, as a leaking joint may need more than the screw alone
  • Check whether any other fixings on the manifold are also damaged

Not sure which part?

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