Metal Drill Bits & Sets for Sale

High speed steel (HSS) cobalt drill bits are essential for those looking to drill through hard metals. Whether it’s cast iron, titanium or stainless steel, our range of Milwaukee ground cobalt drill bits will be up to the task. 

Milwaukee Step Drill Bits are durable and designed to drill through most metals. With laser etched markings you will always know your hole sizes...no guess work!

Thunderweb Drill Bits are shaped so it gets thicker towards the back of the drill bit. Standard drill bits have a constant thickness throughout their length. 

Titanium Coated Drill Bits, otherwise known as TiN coated drill bits, are high-hardness, high speed steel (HSS) drill bits built for heavy metal drilling.  

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Milwaukee 4932352356 HSS-G Thunderweb Metal Drill Bit 5.0mm
    • Metal drill bits HSS Ground - DIN 338
    • Accepts higher feed pressure and torque
    • 135° Split Point
    The Milwaukee 4932352356 Thunderweb Metal Drill Bit is ideal for drilling very hard materials and curved surfaces with the use of the 135° split point. Learn More
    £1.19 £0.99
    Milwaukee 48899261 4mm - 12mm (1mm) ShockWave Impact Duty Step Drill Bit
    • The Rapid Strike Tip™
    • The optimized SHOCKZONE™
    • 9 steps
    The Milwaukee 48899261 is part of Shockwave Impact Duty™ step drills range. Learn More
    £48.68 £40.57
    Milwaukee 4932363253 HSS 3mm x 61mm Ground Cobalt Drill Bits 2pk
    • Produced according to DIN 338.
    • 5% Cobalt content.
    • Withstands high drilling heat.
    Milwaukee 4932363253 HSS Ground Cobalt Drill Bits are ideal for drilling high alloy content steels and metals with tensile strengths over 1000N/mm² such as heat and acid proof steels and stainless steels. Learn More
    £3.00 £2.50
    Milwaukee 4932352470 HSS Ground Cobalt Drill Bits 19pk
    • Produced according to DIN 338.
    • 5% Cobalt content.
    • Withstands high drilling heat.
    Milwaukee 4932352470 HSS Ground Cobalt Drill Bits are ideal for drilling high alloy content steels and metals with tensile strengths over 1000N/mm² such as heat and acid proof steels and stainless steels. Learn More
    £71.71 £59.76
    Milwaukee HSS-G Thunderweb Drill Bits (DIN338) - 5pc
    • 135° Split point
    • Polished finish reduces friction
    • Resistant to breakages

    THUNDERWEB design is characterised by a conical shaped web which gets thicker towards the back of the drill bit

    Learn More
    £7.96 £6.63
    Milwaukee 48899263 4-20mm Step Drill Bit
    • The Rapid Strike Tip™
    • The optimized SHOCKZONE™
    • 9 steps
    The Milwaukee 48899263 is part of Shockwave Impact Duty™ step drills range. Learn More
    £57.82 £48.18
    Milwaukee 4932352348 HSS-G Thunderweb Metal Drill Bits 2.5mm
    • Metal drill bits HSS Ground - DIN 338
    • Polished finish
    • 135° Split point
    The Milwaukee 4932352348 Thunderweb Metal Drill Bit is ideal for drilling very hard materials and curved surfaces with the use of the 135° split point. Learn More
    £1.06 £0.88
    Milwaukee 4932352361 HSS-G Thunderweb Metal Drill Bit 7.0mm
    • Less effort/feed pressure
    • Drilling on curved surfaces
    • Reduced drill drawback
    The Milwaukee 4932352361 Thunderweb Metal Drill Bit is ideal for drilling very hard materials and curved surfaces with the use of the 135° split point. Learn More
    £2.12 £1.77
    Milwaukee 4932363474 HSS 4mm Drill Bits 10pk
    • High speed steel rollforged metal drill bits produced according to DIN 338.
    • Oxide coating enables quick swarf removal. Normal point shaped cutting tip with 118° angle.
    • Type N flute normal angle
    The Milwaukee 4932363474 HSS 4mm Drill Bits are ideal for drilling into cast iron, steel, alloyed and non-alloyed material up to 800N/mm². Learn More
    £4.27 £3.56
    Milwaukee 4932363476 HSS 4.2mm Drill Bits 10pk
    • High speed steel rollforged metal drill bits produced according to DIN 338.
    • Oxide coating enables quick swarf removal. Normal point shaped cutting tip with 118° angle.
    • Type N flute normal angle
    The Milwaukee 4932363476 HSS 4.2mm Drill Bits are ideal for drilling into cast iron, steel, alloyed and non-alloyed material up to 800N/mm². Learn More
    £5.20 £4.33
    Milwaukee 4932363489 HSS 5.5mm Drill Bits 10pk
    • High speed steel rollforged metal drill bits produced according to DIN 338.
    • Oxide coating enables quick swarf removal. Normal point shaped cutting tip with 118° angle.
    • Type N flute normal angle
    The Milwaukee 4932363489 HSS 5.5mm Drill Bits are ideal for drilling into cast iron, steel, alloyed and non-alloyed material up to 800N/mm². Learn More
    £6.37 £5.31
    Milwaukee 4932363279 HSS 10mm x 133mm Ground Cobalt Drill Bit
    • Produced according to DIN 338.
    • 5% Cobalt content.
    • Withstands high drilling heat.
    Milwaukee 4932363279 HSS Ground Cobalt Drill Bit is ideal for drilling high alloy content steels and metals with tensile strengths over 1000N/mm² such as heat and acid proof steels and stainless steels. Learn More
    £6.86 £5.72
    Milwaukee 48899265 4-30mm Step Drill Bit
    • The Rapid Strike Tip™
    • The optimized SHOCKZONE™
    • 12 steps
    The Milwaukee 48899265 is part of Shockwave Impact Duty™ step drills range. Learn More
    £108.89 £90.74
    Milwaukee 4932352345 HSS-G Thunderweb 1.0mm Metal Drill Bits 2pk
    • Flute geometry - Thunderweb flute form ejects hot chips rapidly. Dissipates heat better increasing life time.
    • Parabolic web cross section: Large web thickness. Strength built in.
    • Polished finish reduces friction and extends drill bit life.
    The Milwaukee 4932352345 metal Drill Bit is ideal for drilling very hard materials and curved surfaces with the use of the 135° split point. The split point also gives the user precision starting and quick penetration. Learn More
    £0.88 £0.73
    Milwaukee 4932352346 HSS-G Thunderweb Metal Drill Bits 1.5mm 2pk
    • Polished finish reduces friction and extends drill bit life.
    • Impact resistant ABS case with added rubber corner protection.
    • Accepts higher feed pressure and torque equalling less breakages.
    The Milwaukee 4932352346 Thunderweb Metal Drill Bit is ideal for drilling very hard materials and curved surfaces with the use of the 135° split point. Learn More
    £0.95 £0.79
    Milwaukee 4932352347 HSS-G Thunderweb Metal Drill Bits 2.0mm 2pk
    • Parabolic web cross section: Large web thickness. Strength built in.
    • Flute geometry - Thunderweb flute form ejects hot chips rapidly. Dissipates heat better increasing life time.
    • 135° Split point - Precision starting, drill bit won't walk on material surface.
    The Milwaukee 4932352347 Thunderweb Metal Drill Bit is ideal for drilling very hard materials and curved surfaces with the use of the 135° split point. Learn More
    £0.98 £0.82
    Milwaukee 4932352350 HSS-G Thunderweb Metal Drill Bits 3.2mm 2pk
    • Parabolic web cross section: Large web thickness. Strength built in.
    • Flute geometry - Thunderweb flute form ejects hot chips rapidly. Dissipates heat better increasing life time.
    • 135° Split point - Precision starting, drill bit won't walk on material surface.
    The Milwaukee 4932352350 Thunderweb Metal Drill Bit is ideal for drilling very hard materials and curved surfaces with the use of the 135° split point. Learn More
    £1.40 £1.17
    Milwaukee 4932352351 HSS-G Thunderweb Metal Drill Bits 3.5mm 2pk
    • Metal Drill Bit design is unique, with a conical shaped web which gets thicker towards the back of the drill bit
    • It has a parabolic web cross section that gives a larger web thickness increasing the strength of the bit, and prevents breakage
    • The Thunderweb flute form ejects hot chips rapidly, dissipating heat better, increasing the life span and working time.
    The Milwaukee 4932352351 Thunderweb Metal Drill Bit is ideal for drilling very hard materials and curved surfaces with the use of the 135° split point. Learn More
    £1.40 £1.17
    Milwaukee 4932352352 HSS-G Thunderweb Metal Drill Bits 4.0mm 2pk
    • Accepts higher feed pressure and torque
    • Metal drill bits HSS Ground - DIN 338
    • Polished finish
    The Milwaukee 4932352352 Thunderweb Metal Drill Bit is ideal for drilling very hard materials and curved surfaces with the use of the 135° split point. Learn More
    £1.48 £1.23
    Milwaukee 4932352354 HSS-G Thunderweb Metal Drill Bit 4.5mm
    • 135° Split point
    • Flute geometry
    • Parabolic web cross section
    The Milwaukee 4932352354 Thunderweb Metal Drill Bit is ideal for drilling very hard materials and curved surfaces with the use of the 135° split point. Learn More
    £1.06 £0.88
    Milwaukee 4932352358 HSS-G Thunderweb Metal Drill Bit 6.0mm
    • Flute geometry
    • 135° Split point
    • Polished finish
    The Milwaukee 4932352358 Thunderweb Metal Drill Bit is ideal for drilling very hard materials and curved surfaces with the use of the 135° split point. Learn More
    £1.66 £1.38
    Milwaukee 4932352363 HSS-G Thunderweb Metal Drill Bit 8.0mm
    • The 135° split point allows for precision starting, quick penetration, requires less effort/feed pressure, and perfect for drilling very hard materials.
    • They are great for drilling on curved surfaces.
    • The open flute form also reduces drill drawback, especially when drilling deeper holes.
    The Milwaukee 4932352363 Thunderweb Metal Drill Bit is ideal for drilling very hard materials and curved surfaces with the use of the 135° split point. Learn More
    £2.98 £2.48
    Milwaukee 4932352365 HSS-G Thunderweb Metal Drill Bit 9.0mm
    • Accepts higher feed pressure and torque equalling less breakages.
    • Impact resistant ABS case with added rubber corner protection.
    • Polished finish reduces friction and extends drill bit life.
    The Milwaukee 4932352365 Thunderweb Metal Drill Bit is ideal for drilling very hard materials and curved surfaces with the use of the 135° split point. Learn More
    £3.74 £3.12
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    What should I be using a cobalt drill bit for? 

    Cobalt drill bits are best suited to metal drilling due to their excellent resistance to the high drilling heat generated when working with abrasive hard metal materials. They are, in fact, cobalt tipped drill bits, with the Milwaukee product line using 95% high speed steel alloyed with 5% cobalt. 

    Utilising a split point shaped cutting tip with a 135 degree angle to prevent walking and improve centring, Milwaukee ground cobalt drill bits are suitable for drilling high alloy content metals with tensile strengths of over 1000N/mm². 

    Because of their relatively high cost, cobalt drill bits are not recommended for general purpose use. However, their strength and durability make them ideal for repetitive drilling of steel and other metals. Through Milwaukee, we are proud to stock a product that is designed to give you the fastest and most accurate finish to your metal work. 

    Need some help? 

    Don’t be afraid to take advantage of our team’s expertise. At SGS Engineering we pride ourselves on going the extra mile for our customers and providing the best possible service. Need some extra help with cobalt drill bits? Put our knowledge to the test. No matter your level of experience, we’re here to help. 

    We want you to be confident in the purchase you’re making, which is why we offer 60-day, hassle-free returns on all of our products, as well as free delivery on all orders over £50. The SGS team are available to contact online or via our sales helpline, so please don’t hesitate to get in touch. 

    Help Centre

    We’ve set up an online help centre featuring a number of useful how-to guides on our products and general engineering advice. If you’re looking at cobalt drill bits for metal work, here are a few you may find useful.
    • Drill & driver bit selection guide:
      Do you need cobalt drill tips or does your job require something else? Have a look at this guide to get an understanding of all things drill bits and drivers.
    • How to drill perfectly:
      If you’re going to invest in a high quality HSS cobalt drill bit set, you need to know what you’re doing with it. Check out our guide to nailing down good drilling technique.
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