Countersinks & Step Drills
Discover our range of countersinks and step drills from Faithfull, DEWALT, Halls, IRWIN, BlueSpot Tools, Dormer and Trend, covering HSS, carbon steel, hex shank and TCT countersinks alongside step drills from 4mm up to 42mm.
A countersink shapes a recess at the top of a drilled hole so a screw head sits flush or below the surface, while a step drill cuts a progressive range of hole diameters with a single tool. Both solve common finishing and hole-sizing problems that a standard twist drill bit can't handle on its own.
57 products
Countersinks & Step Drills – Product list
HSS and carbon countersinks for wood
Wood countersinks shape a clean recess for screw heads to sit flush. The Faithfull High Speed Steel Countersink 13mm and 16mm versions, plus the more compact 13mm Chubby profile, cover common screw sizes. Faithfull's Carbon Countersink range offers a lower-cost alternative in the same 13mm and 16mm sizes for lighter, occasional use. Halls' wood countersinks are graded by screw number, covering up to No.10 and up to No.16 screws.
Metal countersinks and straight shank options
For countersinking in metal, Halls offers a full diameter range from 6.3mm through 8.3mm, 10.4mm, 12.4mm, 16.5mm up to 20.5mm. Dormer's G136 HSS Straight Shank Countersink range covers a 90º angle across sizes from 8mm up to 25mm, suited to precision metalworking applications.
Hex shank countersinks for impact driver and combi drill use
IRWIN's Hex Countersink range, in 10mm, 13mm and 16mm, along with the BlueSpot Tools HSS Titanium Countersink Bit Set (5 Piece), fits directly into a combi drill or impact driver's hex chuck, avoiding the need for a separate countersink bit holder.
Countersinks with integrated pilot drill
Trend's SNAP/CS range combines a countersink and pilot drill in a single tool, covering common screw sizes from the SNAP/CS/4 and SNAP/CS/6 through to SNAP/CS/12, drilling the pilot hole and countersink recess in a single pass. The SNAP/CS/SET (5 Piece) and TCT version, the SNAP/CSTC/SET, bundle multiple sizes for general trade use.
Step drills for sheet metal and electrical work
Step drills cut a progressive range of diameters with one tool, ideal for thin sheet metal and electrical panel work. DEWALT's Extreme Step Drill Bit range spans 6-12mm through to 20-34mm, while Faithfull's HSS Step Drill Bit range covers 4-14mm, 6-20mm and 6-30mm, or as a Set of 3 (4-30mm). IRWIN's step drills extend further with 10 and 13-hole progressions up to 35mm.
Halls step drills for conduit and larger diameters
Halls' MC range covers the largest diameters in this collection, including the MC 10M (4-30mm) and MC 3M (20-30mm). For electrical conduit specifically, the MC1625 and MC1632 cut directly to standard conduit sizes (16, 20, 25 and 32mm), avoiding the need to match a general step drill's increments to conduit dimensions.
Choosing between a countersink and a step drill
Use a countersink when you need a screw head to sit flush or recessed below the surface after drilling a standard pilot hole. Use a step drill when you need one or more clean, specific-diameter holes cut through thin material, such as sheet metal or electrical enclosures, without changing bits between sizes.
Why buy your countersinks and step drills from MTN Shop
All countersinks and step drills sold here are genuine stock from Faithfull, DEWALT, Halls, IRWIN, BlueSpot Tools, Dormer and Trend. We ship fast across the UK with straightforward returns on unused stock. For trade or bulk orders, request a quote and our team will confirm stock and lead time directly. For any other questions, contact us and our team will be happy to help.
