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  • KS TOOLS Countersink 336.0058 Metal drill bits 336.0058 at a discount — buy now!
    KS TOOLS Countersink
    Article number: 336.0058
    Product info:
    • Material: Steel, Cast Iron, Non-ferrous Metal, Light metal, High-speed steel
    • Diameter 1 [mm]: 8,0
    • Diameter 2 [mm]: 2,0
    • Shaft diameter [mm]: 6,0
    • Colour: Silver
    • Shape: C-Shape
    • Weight [g]: 15
    • Length [mm]: 50,0
    • DIN / ISO: DIN335FormC
    • Surface: Blank
    • Shaft form: Cylindrical
    • Left / Right Cutting: Right cutting
    • Countersink Angle [°]: 90
    • Item number336.0058
    • Our price11,18 £
    • Condition  New
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  • Hogert Technik Sheet Metal Cone Bit HT6D334 Metal drill bits HT6D334 at a discount — buy now!
    Hogert Technik Sheet Metal Cone Bit
    Article number: HT6D334
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    Product info:
    • Diameter [mm]: 4.5
    • Overall Length [mm]: 85
    • Effective Length [mm]: 52
    • Packing Type: Blister Pack
    • Material: High-speed steel
    • Weight [g]: 25
    • Item numberHT6D334
    • Our price3,15 £
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  • Hogert Technik Sheet Metal Cone Bit HT6D335 Metal drill bits HT6D335 at a discount — buy now!
    Hogert Technik Sheet Metal Cone Bit
    Article number: HT6D335
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    Product info:
    • Diameter [mm]: 5.0
    • Effective Length [mm]: 57
    • Overall Length [mm]: 90
    • Packing Type: Blister Pack
    • Material: High-speed steel
    • Weight [g]: 31
    • Item numberHT6D335
    • Our price3,60 £
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  • YATO Step Drill YT-4020 Metal drill bits YT-4020 at a discount — buy now!
    YATO Step Drill
    Article number: YT-4020
    Product info:
    • DIN / ISO: DIN 338
    • Number of tools: 2
    • Material: High-speed steel
    • Bore Ø [mm]: 2
    • Item numberYT-4020
    • Our price1,16 £
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    £ 1,64**
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  • YATO Step Drill YT-4356 Metal drill bits YT-4356 at a discount — buy now!
    YATO Step Drill
    Article number: YT-4356
    Product info:
    • Length [mm]: 120
    • Bore Ø [mm]: 10
    • Material: High-speed steel
    • Item numberYT-4356
    • Our price1,60 £
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    £ 2,26**
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  • YATO Step Drill YT-4042 Metal drill bits YT-4042 at a discount — buy now!
    YATO Step Drill
    Article number: YT-4042
    Product info:
    • DIN / ISO: DIN 338
    • Material: High-speed steel
    • Bore Ø [mm]: 4.2
    • Item numberYT-4042
    • Our price1,63 £
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  • YATO Step Drill YT-4045 Metal drill bits YT-4045 at a discount — buy now!
    YATO Step Drill
    Article number: YT-4045
    Product info:
    • DIN / ISO: DIN 338
    • Material: High-speed steel
    • Bore Ø [mm]: 4.5
    • Item numberYT-4045
    • Our price1,63 £
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  • YATO Step Drill YT-4050 Metal drill bits YT-4050 at a discount — buy now!
    YATO Step Drill
    Article number: YT-4050
    Product info:
    • DIN / ISO: DIN 338
    • Material: High-speed steel
    • Bore Ø [mm]: 5
    • Item numberYT-4050
    • Our price1,73 £
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    £ 2,43**
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  • YATO Step Drill YT-4030 Metal drill bits YT-4030 at a discount — buy now!
    YATO Step Drill
    Article number: YT-4030
    Product info:
    • DIN / ISO: DIN 338
    • Number of tools: 2
    • Material: High-speed steel
    • Bore Ø [mm]: 3
    • Item numberYT-4030
    • Our price1,77 £
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    £ 2,49**
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  • YATO Step Drill YT-4040 Metal drill bits YT-4040 at a discount — buy now!
    YATO Step Drill
    Article number: YT-4040
    Product info:
    • DIN / ISO: DIN 338
    • Material: High-speed steel
    • Bore Ø [mm]: 4
    • Item numberYT-4040
    • Our price1,80 £
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    £ 2,54**
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  • YATO Step Drill YT-4048 Metal drill bits YT-4048 at a discount — buy now!
    YATO Step Drill
    Article number: YT-4048
    Product info:
    • DIN / ISO: DIN 338
    • Material: High-speed steel
    • Bore Ø [mm]: 4.8
    • Item numberYT-4048
    • Our price1,95 £
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    £ 2,74**
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  • YATO Step Drill YT-4025 Metal drill bits YT-4025 at a discount — buy now!
    YATO Step Drill
    Article number: YT-4025
    Product info:
    • DIN / ISO: DIN 338
    • Number of tools: 2
    • Material: High-speed steel
    • Bore Ø [mm]: 2.5
    • Item numberYT-4025
    • Our price1,98 £
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  • YATO Step Drill YT-4052 Metal drill bits YT-4052 at a discount — buy now!
    YATO Step Drill
    Article number: YT-4052
    Product info:
    • DIN / ISO: DIN 338
    • Material: High-speed steel
    • Bore Ø [mm]: 5.2
    • Item numberYT-4052
    • Our price2,00 £
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    £ 2,81**
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  • YATO Step Drill YT-4060 Metal drill bits YT-4060 at a discount — buy now!
    YATO Step Drill
    Article number: YT-4060
    Product info:
    • DIN / ISO: DIN 338
    • Material: High-speed steel
    • Bore Ø [mm]: 6
    • Item numberYT-4060
    • Our price2,34 £
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  • YATO Step Drill YT-4065 Metal drill bits YT-4065 at a discount — buy now!
    YATO Step Drill
    Article number: YT-4065
    Product info:
    • Bore Ø [mm]: 6,5
    • Material: High-speed steel
    • Item numberYT-4065
    • Our price3,45 £
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    £ 4,86**
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  • YATO Step Drill YT-4075 Metal drill bits YT-4075 at a discount — buy now!
    YATO Step Drill
    Article number: YT-4075
    Product info:
    • DIN / ISO: DIN 338
    • Material: High-speed steel
    • Bore Ø [mm]: 7,5
    • Item numberYT-4075
    • Our price3,63 £
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    £ 5,11**
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  • YATO Step Drill YT-4090 Metal drill bits YT-4090 at a discount — buy now!
    YATO Step Drill
    Article number: YT-4090
    Product info:
    • DIN / ISO: DIN 338
    • Material: High-speed steel
    • Bore Ø [mm]: 9
    • Item numberYT-4090
    • Our price4,73 £
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    £ 6,66**
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  • YATO Step Drill YT-4085 Metal drill bits YT-4085 at a discount — buy now!
    YATO Step Drill
    Article number: YT-4085
    Product info:
    • DIN / ISO: DIN 338
    • Material: High-speed steel
    • Bore Ø [mm]: 8.5
    • Item numberYT-4085
    • Our price5,76 £
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  • YATO Step Drill YT-3372 Metal drill bits YT-3372 at a discount — buy now!
    YATO Step Drill
    Article number: YT-3372
    Product info:
    • Square Drive Tang Size [mm (inch)]: 10 (3/8")
    • Diameter from [mm]: 32
    • Diameter to [mm]: 200
    • Item numberYT-3372
    • Our price6,09 £
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    £ 8,58**
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  • YATO Step Drill YT-4100 Metal drill bits YT-4100 at a discount — buy now!
    YATO Step Drill
    Article number: YT-4100
    Product info:
    • DIN / ISO: DIN 338
    • Material: High-speed steel
    • Bore Ø [mm]: 10
    • Item numberYT-4100
    • Our price6,97 £
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Metal drill bits are high-strength cutting tools which are designed for making holes or recesses in different materials. They have a sharp tip and special cutting edges due to which they can bore a workpiece, when rotating.

What are the types of metal drill bits?

By design:

  • Spade drill bits. They are intended for reaming large holes by drilling. Their working part is made in the shape of a plate. Swarf removal isn’t provided.
  • Twist drill bits. The most widely spread. They are made as a rod with spiral grooves which are used for removing swarf from the working area and also contribute to the cooling of the part. There are right-hand and left-hand metal drill bits. The latter ones are intended for drilling out stuck or damaged fasteners.
  • Hole saws. They are made as a hollow cylinder with teeth on its edge which are usually covered with diamond coating. Used for fast drilling of holes of a large diameter. Intended for thin metal sheets.
  • Unibit drill bits (step drill bits). They are suitable for boring holes of different diameters. They often have markings on them to define the precise size of the hole.
  • Center drill bits. They are double ended. Used for making marks.

By the method of production:

  • Solid drill bit. They are made as a solid element produced of only one material.
  • Welded drill bits. Their shank is usually made of a softer material, while the cutting part – of a hard one.
  • Indexable drill bits. Comprise a body and changeable plates or heads. Suitable for heavy workloads. Ideal for processing flat bottom holes.

By the shape of the hole:

  • Cylindrical. They have the same diameter throughout the entire drilling depth.
  • Conical. These are tapered bits.

By the material:

  • Carbon steel bits. They are inexpensive. Prone to corrosion. Non-elastic.
  • Compound steel bits. Perfectly combine durability, stiffness, elasticity and wear resistance. Characterised by a low price.
  • Hard alloy bits. Characterised by a high drilling speed.

Tips on using metal drill bits.

It is necessary to choose an appropriate drilling mode to ensure the longest possible service life of the tool. For example, the optimum speed for a drill bit of 3 mm diameter is 400 rpm.

It is not recommended to use dull accessories. You should use special equipment for sharpening the cutting edge. When doing this, you should consider the material you’re going to work with. For instance, for drilling a copper workpiece, it is required to sharpen the bit at an angle of 100°, while for working with steel you’ll need the angle of 140°.

In order to make a straight hole, it is necessary to mark the centre of the future hole with a punch. You can also use a special centre metal drill bit. You should hold the tool so that the cutting part would be positioned at a right angle to the processed workpiece.

You shouldn’t apply too much force to the drill. When making open-end holes, you need to gradually reduce the effort. To avoid overheating of the tool it is recommended to put it occasionally into a vessel with cold water or machine oil. It is not allowed to touch the moving parts: there is a risk of getting injured or burnt.

AUTODOC: convenient online shopping

You can buy a metal drill bit of a high quality inexpensively at our AUTODOC online store. Our advantages:

  • affordable prices.
  • fast delivery.
  • high-quality service.
  • competent assistance.
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