Carlyle Hex Driver – 4mm (SDH4M)

Name: Carlyle Hex Driver - 4mm (SDH4M)
Brand: Carlyle
SKU: CLL-SDH4M
Price: 2.49 GBP
Availability: OutOfStock

£2.49 inc. VAT

Out of stock

Out of stock right now. We can usually order it in for the next working day — ring 0115 927 3651 or WhatsApp us with the part number CLL-SDH4M and we’ll confirm price and day.

4mm hex driver
M5 cap / M8 grub screws
Comfort grip

Next-day UK delivery £3.99 (order by 1pm Mon–Fri), or free click & collect from our Bulwell shop — 2–4 Carey Road, NG6 8AT. Choose collection at checkout, then pick it up any time in opening hours (Mon–Fri 9–5:30, Sat 9–1) — just quote your order number.

Next-day UK delivery £3.99 (order by 1pm Mon–Fri). Home delivery only: click & collect isn’t available for this item. With items from our shop in the same order, delivery is £5.99 (two parcels).

SKU: CLL-SDH4M Category: Screwdrivers & Bits Brand: Carlyle

Description
Additional information

Description

Genuine Carlyle · Part no. SDH4M

The Carlyle SDH4M is a 4mm metric hex (Allen) driver: a comfort-grip screwdriver handle on a satin chrome hex shaft. 4mm is the key for M5 socket cap screws and M8 grub screws, and for many M6 button-head and countersunk screws, so it is a busy size on brackets and fittings.

Good to know

Why does 4mm fit screws of different threads? The key size depends on the head style as well as the thread: an M5 cap head and many M6 button or countersunk heads both take 4mm, so check against the screw itself.
Can I tighten things fully with it? For fittings that need a set torque, use a torque wrench with a hex bit; a hand driver suits running screws in and snugging them up.
What if the screw won't budge? Clean the socket, seat the driver fully, then add a bar through the handle hole for steady extra force; shock or heat may be needed for a seized one.