Black Electrical Screws M3.5 40–75mm — Black Nickel Socket

Why choose these black electrical screws

Standard chrome and zinc screws stand out against modern black and dark-grey accessories. These M3.5 machine screws are finished in a hard-wearing black nickel coating that matches matt black, anthracite, graphite and dark bronze plates from all major UK brands. The threads are precision-rolled to fit the standard back-box lugs without binding or stripping.

Lengths available

• 40mm — standard length for 25mm back boxes with flush plates.
• 50mm — recessed boxes and architrave switches.
• 75mm — dry-lining boxes and thick plasterboard installations.

Black nickel is stocked in 40mm, 50mm and 75mm. For 35mm, see our bright zinc range.

Pack options

Packs of 10 for a single room, 20 for a whole-house rewire, or 50 for trade use. Choose length and quantity together from the one selector.

Matching other finishes

Also available in bright zinc, polished chrome and polished brass.

Typical uses

Single and double sockets, light switches, dimmer switches, fused spurs, cooker switches, blank plates and USB charging sockets in black, anthracite or dark-bronze finishes. Compatible with all UK standard 25mm and 35mm back boxes.

How to fit

Strip and terminate the cables in the accessory’s terminals, fold the conductors neatly into the back box, and offer the plate up to the lugs. Start each screw by hand to avoid cross-threading, then tighten gently with a flat-blade screwdriver — stop as soon as the plate sits flush. Do not over-tighten, as this can crack or chip the finish.

Delivery

Same-day dispatch on orders placed before 2pm Monday–Friday. Free UK delivery on orders over £20.