Countersunk machine screws
Zinc-plated slotted/Pozi countersunk screws with a machine thread. M4 (sometimes called 3.5mm) is the standard thread for fixing switches and plug sockets to wall boxes; longer lengths reach through thick plaster or spacers. M5 suits brackets, hinges and heavier fittings. Sold individually – buy exactly what you need.
| Thread | Lengths in stock |
|---|---|
| M4 | 12mm, 20mm, 25mm, 30mm, 40mm, 50mm, 60mm, 75mm |
| M5 | 12mm, 20mm, 40mm, 50mm, 60mm, 75mm, 100mm |






















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