HSS Premium 12 mm Metal Drill Bit YT-44235 YATO
Key information
Availability:In stock (ready to ship)
Shipping time:immediately
Shipping cost:From 3.29 Euro
catalog number:YT-44235
Availability:
EAN code:5906083047947
Product condition:New, originally packaged
Guarantee:24 months of consumer protection
Weight:0,10 kg
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HSS Premium 12 mm Metal Drill Bit YT-44235 YATO
Twist drill bit made from HSS 4241 high-speed steel with a 135° split point, designed for drilling holes in steel, stainless steel, cast iron and other metals. Compliance with the DIN 338 standard ensures accurate hole dimensions.
Technical characteristics of the HSS Premium drill bit
HSS 4241 high-speed steel
An alloy containing tungsten, molybdenum and vanadium that retains its hardness at temperatures of up to 600°C. The 4241 designation indicates a content of 4% chromium, 2% vanadium, 4% molybdenum and 1% tungsten. As a result, the drill bit keeps its cutting edges sharp during intensive work in hard metals.
135° split point
The split point design with a self-centring tip eliminates the need for centre punching before drilling. The 135° angle reduces the pressure required to start drilling and prevents the drill bit from slipping across the metal surface, particularly on rounded or angled components.
DIN 338 standard and precision-ground shank
Grinding to the DIN 338 standard guarantees a diameter tolerance of h8, which translates into dimensional accuracy of the holes. The precision-ground shank (a turned cylindrical surface on the shank) ensures a secure fit in the drill chuck and eliminates slipping when torque is transmitted.
Additional cutting edge and low friction
The additional cutting edge increases the efficiency of material removal and reduces the thermal load on the point. The polished surface of the flutes reduces the coefficient of friction, which helps to clear swarf from the hole and prevents it from jamming when drilling deep holes.
Technical specification
| Model | YT-44235 |
| Nominal diameter | 12.0 mm |
| Overall length | 140 mm |
| Material | HSS 4241 (high-speed steel) |
| Point angle | 135° (split point) |
| Manufacturing standard | DIN 338 |
| Shank type | Cylindrical, precision-ground |
| Pack quantity | 1 piece |
Applications of the HSS 12 mm drill bit
- Drilling holes in S235 and S355 structural steel and non-alloy steels with a tensile strength of up to 900 N/mm²
- Machining austenitic stainless steel (AISI 304, 316) in workshop and assembly conditions
- Drilling holes in grey and ductile cast iron in machine components and structures
- Drilling high-carbon and tool steels at a rotational speed suited to the hardness of the material
- Assembly work on steel building and industrial structures
- Preparing holes for M12 bolted connections in metal components
- Repair and reconditioning of metal components in mechanical workshops
- Drilling aluminium, brass and copper at higher rotational speeds
Operating parameters and compatibility
Rotational speed and feed
For structural steel, the recommended rotational speed is 250-350 rpm when drilling dry, or 400-500 rpm with emulsion cooling. For stainless steel, reduce the speed to 150-250 rpm and use ample cooling. The feed rate should be 0.1-0.2 mm/rev depending on the hardness of the material.
Chuck compatibility
The drill bit fits standard jaw drill chucks with a capacity of 1.5-13 mm as well as keyless chucks. The precision-ground shank ensures coaxial alignment with the drill's axis of rotation, which eliminates radial run-out during operation. It also performs well in hammer drills with the hammer action switched off.
Maintenance and sharpening
After intensive use, the drill bit can be sharpened on a bench grinder with a corundum wheel, maintaining the 135° point angle and the symmetry of the cutting edges. Swarf lodged in the flutes should be removed regularly with a wire brush. Storing the bit in a dry place prevents corrosion of the working surface.
Commercial information
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Client: Ra...ki,date of purchase 26-05-2025 19:27
Client: An...ek,date of purchase 07-12-2020 12:13
Client: No...ki,date of purchase 07-06-2020 21:47
Client: Ma...ki,date of purchase 29-04-2020 15:19
