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header-product Drill Bit KWB 421103 3 mm Right Hand Rotation 1 pc

Drill Bit KWB 421103 3 mm Right Hand Rotation 1 pc

Drill Bit KWB 421103 Photo 1
Drill Bit KWB 421103 Photo 2
Drill Bit KWB 421103 Photo 1
Drill Bit KWB 421103 Photo 2
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Short description

The KWB 421103 drill bit features a diameter of 3 mm and is designed for right hand rotation. It comes in a blister package and is ideal for precision drilling tasks.
Warranty: 2 Years
SKU: 10738654
Manufacturer: KWB
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Product information

Description

Drill Bit KWB 421103 is a 3 mm high-speed steel (HSS) twist drill with a 1/4" hexagon shank to ISO 1173 (E 6.3). The bit is precision ground, has a right-hand cut (rotation), a 135° tip angle and a natural (self) colour. It is supplied in a blister pack and is suitable for use with cordless drivers, drills and bit holders that accept a 1/4" hexagon drive.

Advantages

The precision-ground HSS cutting edges provide consistent hole quality and dimensional accuracy. The 1/4" hex shank ensures secure seating and quick bit changes in impact drivers and bit holders. The 135° tip angle improves centring and reduces walking on metal and hard plastics. The compact 3 mm diameter is suitable for fine, precision drilling applications.

Suitable for

  • Alloyed and mild steel
  • Cast steel and cast iron
  • Sintered steel
  • Non-ferrous metals (e.g., aluminium, copper)
  • Hard plastics

Key specifications

  • Brand: KWB
  • Model / MPN: 421103
  • Diameter: 3 mm
  • Shank: 1/4" hexagon (ISO 1173, E 6.3)
  • Cut type: Right hand
  • Material: HSS (high-speed steel), precision ground
  • Tip angle: 135°
  • Finish: Self colour
  • Packing: 1 pc blister

How to use

Insert the 1/4" hex shank firmly into the driver, drill chuck or bit holder. Use appropriate speed and feed for the material being drilled: lower speeds for hard metals and higher speeds for non-ferrous metals and plastics. Apply steady, moderate pressure and allow the drill bit to cut without excessive force. Periodically withdraw the bit to clear chips and reduce heat buildup. Use cutting fluid when drilling steels to prolong tool life and improve hole finish.

Usage recommendations

For best results when drilling alloyed or cast steels, use a suitable cutting lubricant and operate at reduced speeds. For small-diameter holes like 3 mm, maintain stable workpiece clamping to avoid runout and ensure accurate hole placement.
All features
Length:
79 mm
Proper use:
Drill
Package type:
Blister
Rotating direction:
Right hand rotation
Working length:
45 mm
Suitable for materials:
Iron, Steel, Sheet metal, Profile, Non-ferrous metal, Hard plastic
Drill bit diameter:
3 mm
Shank shape:
Hex shank
Point angle:
135 °
Drill bit material:
High-Speed Steel (HSS)
Precision ground cutting edges:
Yes
Metal drill bits diameter:
3
Number of drill bits:
1 pc(s)

Description

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Customer reviews

Customer questions

FAQ

What payment options are available?

AiO.lv offers several payment methods: Bank transfer. All transactions are 100% secure and encrypted.

Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

What is the warranty period?

All KWB products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized KWB service centers and through AiO.lv

Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. We will assist with consultation, warranty claim processing, and coordination with certified service centers.
warranty
14-Day Return Policy We are confident in our quality, but if the purchase doesn’t fit — you have 14 days to return the product with peace of mind.
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Fast Delivery Get your orders as quickly as possible — right to your door, parcel lockers, or pickup points across Latvia and the EU.
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Secure Payment Pay the way you prefer: cash, VISA, MasterCard, Apple Pay, Google Pay, bank transfer, or 0% installment plan.
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Quality Since 2008 AiO.lv has been on the market for over 18 years and has earned trust — with more than 6000 genuine positive reviews on Google.