► Sutton Tools | Drills - Countersinks

Precision 90° Cutting for Clean Professional Finishes When accuracy & finish matter, Sutton Tools Countersinks deliver the precision professionals count on. Built for metal fabrication, CNC machining & general workshop jobs, these tools create clean, burr-free chamfers & deburring on steel, aluminium, timber & plastics. Crafted from High-Speed Steel (HSS)...

Precision 90° Cutting for Clean Professional Finishes

When accuracy & finish matter, Sutton Tools Countersinks deliver the precision professionals count on. Built for metal fabrication, CNC machining & general workshop jobs, these tools create clean, burr-free chamfers & deburring on steel, aluminium, timber & plastics.

Crafted from High-Speed Steel (HSS) & Cobalt (HSS-Co), each bit delivers smooth cutting, long working life & less chatter. Whether you’re machining parts, preparing fastener seats, or finishing components, Sutton Countersinks make sure every hole meets trade-standard accuracy & finish.

Designed for Australian workshops & heavy-duty use, these countersinks are trusted by fitters, fabricators, machinists & maintenance teams who need consistent performance day after day. Every tool is precision-ground to DIN 335 geometry, guaranteeing accurate 90° cuts & repeatable results across materials & production runs.

For complete hole preparation, pair your countersinks with Drill Accessories  — the perfect match for pre-drilling before finishing. Maintain tool life with Drive Lubrication Systems to minimize friction & heat during machining. Keep your workspace running smoothly with Tool & Equipment Care solutions & rely on Same Day Dispatch from Industrial Shed to stay on schedule.

What’s in This Collection:

► Countersink C103 903 Single-Flute HSS 90°
‣ Single-flute design reduces chatter & leaves a clean, polished finish on mild steel, aluminium & plastic.

► Countersink C109 HSS 1-Flute 90° Hex Shank
‣ Hex-shank design for quick bit swaps in cordless drills — ideal for both workshop & on-site work.

► Countersink C107 HSS-Co DIN 335 90° (8 mm–20.5 mm)
‣ Premium cobalt build for outstanding edge retention & heat resistance on stainless & hardened alloys.

► Countersink C105 STF1 4-Piece Three-Flute HSS Set 90°
‣ A trade-ready set covering common hole sizes for all-around workshop versatility.

► Single & Multi-Flute Options
‣ Optimized for clean deburring, chamfering & countersinking using drill presses, CNC machines, or handheld tools.

 

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  • Sutton Tools - 30.0mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1073000
    Sutton Tools - 30.0mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1073000
    Sutton Tools - 30.0mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1073000This Sutton countersink delivers clean chamfering and deburring with sharp HSS or carbide cutting edges — for neatly countersinking fasteners and removing burrs from drilled holes.► Key Features Size: 30.0 mm Clean chamfering...
    $67.30
    $94.61
    $67.30
  • Sutton Tools - Countersink C109 HSS 1-Flute 90-Deg HEX Shank | C1090127
    Sutton Tools - Countersink C109 HSS 1-Flute 90-Deg HEX Shank | C1090127
    Sutton Tools - Countersink C109 HSS 1-Flute 90-Deg HEX Shank | C1090127This Sutton countersink delivers clean chamfering and deburring with sharp HSS or carbide cutting edges — for neatly countersinking fasteners and removing burrs from drilled holes.► Key Features Clean chamfering and deburring HSS...
    $29.17
    $41.01
    $29.17
  • Sutton Tools - 31.0mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1073100
    Sutton Tools - 31.0mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1073100
    Sutton Tools - 31.0mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1073100This Sutton countersink delivers clean chamfering and deburring with sharp HSS or carbide cutting edges — for neatly countersinking fasteners and removing burrs from drilled holes.► Key Features Size: 31.0 mm Clean chamfering...
    $67.30
    $94.61
    $67.30
  • Sutton Tools - 25.0mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1072500
    Sutton Tools - 25.0mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1072500
    Sutton Tools - 25.0mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1072500This Sutton countersink delivers clean chamfering and deburring with sharp HSS or carbide cutting edges — for neatly countersinking fasteners and removing burrs from drilled holes.► Key Features Size: 25.0 mm Clean chamfering...
    $62.73
    $88.19
    $62.73
  • Sutton Tools - 23.0mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1072300
    Sutton Tools - 23.0mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1072300
    Sutton Tools - 23.0mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1072300This Sutton countersink delivers clean chamfering and deburring with sharp HSS or carbide cutting edges — for neatly countersinking fasteners and removing burrs from drilled holes.► Key Features Size: 23.0 mm Clean chamfering...
    $61.25
    $86.10
    $61.25
  • Sutton Tools - 20.5mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1072050
    Sutton Tools - 20.5mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1072050
    Sutton Tools - 20.5mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1072050This Sutton countersink delivers clean chamfering and deburring with sharp HSS or carbide cutting edges — for neatly countersinking fasteners and removing burrs from drilled holes.► Key Features Size: 20.5 mm Clean chamfering...
    $43.16
    $60.67
    $43.16
  • Sutton Tools - 19.0mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1071900
    Sutton Tools - 19.0mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1071900
    Sutton Tools - 19.0mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1071900This Sutton countersink delivers clean chamfering and deburring with sharp HSS or carbide cutting edges — for neatly countersinking fasteners and removing burrs from drilled holes.► Key Features Size: 19.0 mm Clean chamfering...
    $43.17
    $60.70
    $43.17
  • Sutton Tools - 16.5mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1071650
    Sutton Tools - 16.5mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1071650
    Sutton Tools - 16.5mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1071650This Sutton countersink delivers clean chamfering and deburring with sharp HSS or carbide cutting edges — for neatly countersinking fasteners and removing burrs from drilled holes.► Key Features Size: 16.5 mm Clean chamfering...
    $40.15
    $56.45
    $40.15
  • Sutton Tools - 15.0mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1071500
    Sutton Tools - 15.0mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1071500
    Sutton Tools - 15.0mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1071500This Sutton countersink delivers clean chamfering and deburring with sharp HSS or carbide cutting edges — for neatly countersinking fasteners and removing burrs from drilled holes.► Key Features Size: 15.0 mm Clean chamfering...
    $40.15
    $56.45
    $40.15
  • Sutton Tools - 13.4mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1071340
    Sutton Tools - 13.4mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1071340
    Sutton Tools - 13.4mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1071340This Sutton countersink delivers clean chamfering and deburring with sharp HSS or carbide cutting edges — for neatly countersinking fasteners and removing burrs from drilled holes.► Key Features Size: 13.4 mm Clean chamfering...
    $41.83
    $56.26
    $41.83
  • Sutton Tools - 12.4mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1071240
    Sutton Tools - 12.4mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1071240
    Sutton Tools - 12.4mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1071240This Sutton countersink delivers clean chamfering and deburring with sharp HSS or carbide cutting edges — for neatly countersinking fasteners and removing burrs from drilled holes.► Key Features Size: 12.4 mm Clean chamfering...
    $37.04
    $52.08
    $37.04
  • Sutton Tools - 11.5mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1071150
    Sutton Tools - 11.5mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1071150
    Sutton Tools - 11.5mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1071150This Sutton countersink delivers clean chamfering and deburring with sharp HSS or carbide cutting edges — for neatly countersinking fasteners and removing burrs from drilled holes.► Key Features Size: 11.5 mm Clean chamfering...
    $38.47
    $51.74
    $38.47
  • Sutton Tools - 10.4mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1071040
    Sutton Tools - 10.4mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1071040
    Sutton Tools - 10.4mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1071040This Sutton countersink delivers clean chamfering and deburring with sharp HSS or carbide cutting edges — for neatly countersinking fasteners and removing burrs from drilled holes.► Key Features Size: 10.4 mm Clean chamfering...
    $33.20
    $46.67
    $33.20
  • Sutton Tools - 10.0mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1071000
    Sutton Tools - 10.0mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1071000
    Sutton Tools - 10.0mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1071000This Sutton countersink delivers clean chamfering and deburring with sharp HSS or carbide cutting edges — for neatly countersinking fasteners and removing burrs from drilled holes.► Key Features Size: 10.0 mm Clean chamfering...
    $33.20
    $46.67
    $33.20
  • Sutton Tools - 9.4mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1070940
    Sutton Tools - 9.4mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1070940
    Sutton Tools - 9.4mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1070940This Sutton countersink delivers clean chamfering and deburring with sharp HSS or carbide cutting edges — for neatly countersinking fasteners and removing burrs from drilled holes.► Key Features Size: 9.4 mm Clean chamfering...
    $34.10
    $45.86
    $34.10
  • Sutton Tools - 8.3mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1070840
    Sutton Tools - 8.3mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1070840
    Sutton Tools - 8.3mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1070840This Sutton countersink delivers clean chamfering and deburring with sharp HSS or carbide cutting edges — for neatly countersinking fasteners and removing burrs from drilled holes.► Key Features Size: 8.3 mm Clean chamfering...
    $32.33
    $45.46
    $32.33
  • Sutton Tools - 8.0mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1070800
    Sutton Tools - 8.0mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1070800
    Sutton Tools - 8.0mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1070800This Sutton countersink delivers clean chamfering and deburring with sharp HSS or carbide cutting edges — for neatly countersinking fasteners and removing burrs from drilled holes.► Key Features Size: 8.0 mm Clean chamfering...
    $33.44
    $44.98
    $33.44
  • Sutton Tools - 7.3mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1070730
    Sutton Tools - 7.3mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1070730
    Sutton Tools - 7.3mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1070730This Sutton countersink delivers clean chamfering and deburring with sharp HSS or carbide cutting edges — for neatly countersinking fasteners and removing burrs from drilled holes.► Key Features Size: 7.3 mm Clean chamfering...
    $31.71
    $44.58
    $31.71
  • Sutton Tools - 6.3mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1070630
    Sutton Tools - 6.3mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1070630
    Sutton Tools - 6.3mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1070630This Sutton countersink delivers clean chamfering and deburring with sharp HSS or carbide cutting edges — for neatly countersinking fasteners and removing burrs from drilled holes.► Key Features Size: 6.3 mm Clean chamfering...
    $31.28
    $43.97
    $31.28
  • Sutton Tools - 5.3mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1070530
    Sutton Tools - 5.3mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1070530
    Sutton Tools - 5.3mm Countersink C107 N DIN335 HSS-Co. 90Deg | C1070530This Sutton countersink delivers clean chamfering and deburring with sharp HSS or carbide cutting edges — for neatly countersinking fasteners and removing burrs from drilled holes.► Key Features Size: 5.3 mm Clean chamfering...
    $32.46
    $43.65
    $32.46

Built for the Jobs That Can’t Stop

Across Australian workshops, fabrication plants & industrial sites, Sutton Countersinks deliver precision under pressure. Each cutter holds its edge through repeat use, producing clean, consistent results on metals, woods & composites.

Fabricators & mechanics in Somerville, Frankston & the Mornington Peninsula rely on Sutton Tools for smooth finishes that cut down rework & assembly time. The C107 cobalt series handles stainless & alloy steels with ease, while the C109 hex-shank models save valuable time on bit changes in production. The C105 4-piece set covers general trade use — perfect for mobile mechanics or fabrication bays.

For workshop accuracy, use Measuring & Layout Tools to check chamfer angles & hole depth. Expand your setup with Drill Accessories for sheet-metal or composite cutting & back every job with Drive Lubrication Systems to maintain tool performance & life.

Whether you’re preparing countersunk fasteners or finishing precision parts, Sutton Countersinks deliver professional-grade reliability. Industrial Shed supports every order with Same Day Dispatch, trade pricing & the Trade Support Solutions, so your work keeps moving without downtime.

► Precision-ground HSS & cobalt 90° countersinks for accurate, burr-free results
► Cuts through steel, stainless, aluminium, timber & composites
► Works seamlessly with CNC machines, drill presses & portable tools
► Backed by Same Day Dispatch & the Trade Support Solutions

Frequently Asked Questions

Single-flute countersinks cut smoothly & reduce chatter, giving clean, accurate chamfers on steel, aluminium & brass.

Yes. Cobalt countersinks keep their edge & handle high heat, making them ideal for stainless, cast iron & hardened materials that wear out standard HSS bits fast.

Use steady feed pressure, correct spindle speed & a rigid setup. Add Drive Lubrication Systems to reduce vibration & improve surface finish, whether on a CNC or drill press.

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Sutton