Product details
The HSS metal twist drill from Heller, with a diameter of 3.9 mm, is a high-quality tool specifically designed for metalworking. With an overall length of 75 mm and a working length of 43 mm, this drill offers an optimal balance between stability and precision. The cobalt surface treatment ensures increased hardness and durability, making it ideal for use in stainless steel and other hard materials. The twist drill complies with DIN standard 338 and is available in a practical packaging of 10 pieces, making it an efficient choice for professional applications and DIY projects. The use of cobalt stainless steel guarantees improved heat resistance and reduces wear, extending the tool's lifespan. This drill is an essential tool for anyone needing precise and clean drill holes in metal.
- Made from cobalt stainless steel for increased hardness and durability
- Suitable for machining stainless steel and other hard materials
- Complies with DIN standard 338 for professional standards
- Convenient packaging with 10 pieces for efficient use.
Metal type | Cobalt |
Material application | Metal, Plastic, Stainless steel |
Drill diameter | 3.9 mm |
Length | 7.50 cm |
Item number | 8402749 |
Manufacturer | Heller |
Category | Drill bit insert |
Manufacturer No. | 21280 9 |
Release date | 19.4.2018 |
Metal type | Cobalt |
Material | Cobalt stainless steel |
Drill Type | Twist Drill |
Material application | Metal, Plastic, Stainless steel |
surface finish | Cobalt |
DIN standard | 338 |
Suitable for | Metal |
borehole size | 3.90 mm |
Point angle | 135° |
Items per sales unit | 10x |
Drill diameter | 3.9 mm |
working length | 43 mm |
Length | 7.50 cm |
Weight | 54 g |
Product Safety |
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Reviews & Ratings
Statutory warranty score
How often does a product of this brand in the «Drill bit insert» category have a defect within the first 24 months?
Source: Galaxus- HellerNot enough data
- 1.Donau0 %
- 1.Einhell0 %
- 1.Exact0 %
- 1.Famag0 %
Statutory warranty case duration
How many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?
Source: Galaxus- HellerNot enough data
- 1.Bosch Professional Zubehör0 days
- 1.DeWalt0 days
- AlpenNot enough data
- BGSNot enough data
Return rate
How often is a product of this brand in the «Drill bit insert» category returned?
Source: Galaxus- 22.Stahlwerk1,1 %
- 22.vidaXL1,1 %
- 25.Heller1,2 %
- 25.kwb1,2 %
- 27.Makita1,4 %