HSS-TiN Metal Drill Bit 3.5 mm HEX / YT-44756 / YATO
Key information
Availability:In stock (ready to ship)
Shipping time:immediately
Shipping cost:From 3.29 Euro
catalog number:YT-44756
Availability:
EAN code:5906083029530
Product condition:New, originally packaged
Guarantee:24 months of consumer protection
Weight:0,02 kg
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- Product description
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HSS-TiN 3.5 mm HEX Metal Drill Bit YATO YT-44756
Steel drill bit made from high-speed steel (HSS) with a titanium nitride (TiN) coating and hex shank. Working diameter 3.5 mm, 135° point angle with Split Point geometry.
Technical features of the metal drill bit
Titanium nitride (TiN) coating
The titanium nitride layer increases surface hardness to approximately 2400 HV, which translates into a tool life up to 300% longer than uncoated HSS. The coating reduces friction and prevents chips from sticking to the flutes.
1/4" hex shank
The shank, compliant with the ISO 1173 standard, fits directly into impact drills, cordless screwdrivers and quick-release chucks. The six flats prevent slipping under torque load.
135° Split Point geometry
The self-centring split point allows drilling to start without centre punching. The 135° angle reduces the axial force required to penetrate the material and shortens working time.
High-speed steel (HSS)
An iron alloy with tungsten, molybdenum and vanadium retains its hardness up to approximately 600°C. The material allows drilling of structural steels up to 900 MPa without loss of cutting edge sharpness.
Technical specification
| Model | YT-44756 |
| Manufacturer | YATO |
| Working diameter | 3.5 mm |
| Core material | High-speed steel (HSS) |
| Coating | Titanium Nitride (TiN) |
| Shank type | Hex 1/4" (6.35 mm) |
| Point angle | 135° |
| Point type | Split Point (self-centring) |
| Flute direction | Right-hand |
Applications for the HSS-TiN 3.5 mm drill bit
- Drilling assembly holes in structural steel sections
- Preparing pilot holes for self-tapping screws in steel sheet
- Drilling austenitic stainless steels (AISI 304, 316)
- Machining carbon and low-alloy steels up to 900 MPa
- Drilling cold-rolled and hot-rolled steels
- Installing electrical and plumbing systems in metal structures
- Service work in the engineering and automotive industries
- Modifying metal components in the workshop
Operating parameters for 3.5 mm diameter
For structural steel (S235-S355): speed 1800-2200 rpm, feed 0.05-0.08 mm/rev. For stainless steel: speed 1200-1500 rpm, feed 0.04-0.06 mm/rev. Use emulsion coolant or cutting oil when drilling holes deeper than 10 mm.
Use and maintenance
Before starting work, check that the drill bit is secure in the chuck – axial play must not exceed 0.1 mm. Begin drilling with the drill axis perpendicular to the material surface. For stainless steel, maintain a constant feed without stopping the drilling, to avoid work hardening the material.
Clean the drill bit after each use with compressed air or a natural-bristle brush. Do not use aggressive solvents that may damage the TiN coating. Store in a dry place, separate from other tools, to prevent damage to the cutting edges.
When drilling materials thicker than 5 mm, use a step drilling technique – drilling a pilot hole with a smaller drill bit (2.5-3 mm) reduces the load and extends tool life. Remove chips from the hole regularly by withdrawing the drill bit during the operation.
Safety guidelines
Wear safety goggles and cut-resistant gloves when drilling. Secure the workpiece to prevent it from moving. Do not exceed the maximum speed recommended for the material. Avoid excessive pressure, which can cause overheating and loss of the TiN coating's properties.
Commercial information
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Client: Pr...ek,date of purchase 23-08-2026 16:48
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Client: Se...ak,date of purchase 01-04-2024 21:50
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Client: Mi...ki,date of purchase 20-02-2020 22:52
Client: Mi...ki,date of purchase 07-05-2019 10:55
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