HSS M35 DIN338 Twist Drill Bits

Material: HSS M35
Standard: DIN338
Coating: Roasted yellow
Suitable for: Stainless steel, mold steel, aluminum alloy, cast iron, copper
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PRODUCT DETAILS

Professional-Grade Drill Bits for Stainless Steel and Hard Alloys

The HSS M35 DIN338 Twist Drill Bits are built for demanding drilling jobs where standard high-speed steel just isn’t enough. With 5% cobalt content, these M35-grade bits offer improved heat resistance, hardness, and wear resistance—especially effective when drilling through stainless steel, cast iron, titanium alloys, and other tough metals.

This series is an excellent choice for industrial users, machinery maintenance, metal fabrication, and distributors looking to offer high-performance cutting tools to their market.


Product Highlights

  • Material: HSS M35 (5% cobalt high-speed steel)
    Greater hardness and red hardness than conventional HSS. Performs well under continuous drilling and higher temperatures.

  • Standard: DIN338 (Jobber Length)
    Designed for accuracy and reduced deflection. Suitable for both manual and CNC drilling setups.

  • Point Angle: 135° Split Point
    Reduces thrust force, improves centering, and eliminates walking—ideal for hard materials and precise drilling operations.

  • Surface Finish Options: TiCo (Cobalt Oxide), TiN (Titanium Nitride), or Plain Bright
    Coated options improve heat resistance, chip removal, and tool life in heavy-duty applications.

  • Shank Type: Straight Shank
    Compatible with all standard drill chucks, including cordless drills, bench drills, and industrial machines.


Why Choose HSS M35 Cobalt Drill Bits?

Ideal for Stainless Steel & Hard Metals – Reliable drilling performance in work-hardening materials like SUS304, cast iron, and alloy steel.

Long Tool Life – 5% cobalt content increases heat resistance and wear life, reducing the frequency of tool changes.

Precision Machined – CNC grinding ensures consistent concentricity, sharpness, and dimensional tolerance.

Wholesale & OEM Ready – We support full-range customization for private labels, export packaging, and size sets.


Applications

  • Stainless steel fabrication

  • Automotive and aerospace maintenance

  • Precision machinery parts

  • CNC and lathe processing

  • Professional installation & engineering projects


Technical Specifications

ItemDescription
MaterialHSS M35 (Co 5%)
StandardDIN338
Point Angle135° Split Point
LengthJobber Length
Surface FinishBright / TiN / Cobalt Oxide
Size Range1.0mm–14.0mm (metric) / Inch sizes available
Shank TypeStraight Shank

Packaging Options

  • Drill Bit Sets – 13pcs, 19pcs, 25pcs, or custom

  • Single size in PVC tubes or plastic boxes

  • Logo laser marking available on shank

  • Retail packaging (blister, color box) and industrial packaging

MOQ: 1000pcs per size or 100 sets
Lead Time: 15–30 working days
Export Markets: Europe, North America, Southeast Asia, South America


Request a Quote or Sample

If you’re sourcing high-performance HSS M35 DIN338 Twist Drill Bits, we’re ready to support your needs with competitive pricing, fast delivery, and OEM flexibility. Reach out today for a quotation or to request a sample. Our team will respond within 24 hours.


Standard Size

Cutting DiameterFlute Length Overall LengthShank Diameter
Cutting DiameterFlute Length Overall LengthShank Diameter
0.5mm6mm22mm0.5mm
4.3mm47mm80mm4.3mm
0.6mm10mm30mm0.6mm
4.4mm47mm80mm4.4mm
0.7mm10mm30mm0.7mm
4.5mm47mm80mm4.5mm
0.8mm10mm30mm0.8mm
4.6mm47mm80mm4.6mm
0.9mm12mm34mm0.9mm
4.7mm47mm80mm4.7mm
1.0mm12mm34mm1.0mm
4.8mm52mm86mm4.8mm
1.1mm16mm38mm1.1mm
4.9mm52mm86mm4.9mm
1.2mm16mm38mm1.2mm
5.0mm52mm86mm5.0mm
1.3mm18mm40mm1.3mm
5.1mm52mm86mm5.1mm
1.4mm18mm40mm1.4mm
5.2mm52mm86mm5.2mm
1.5mm18mm40mm1.5mm
5.3mm52mm86mm5.3mm
1.6mm22mm46mm1.6mm
5.4mm57mm93mm5.4mm
1.7mm22mm46mm1.7mm
5.5mm57mm93mm5.5mm
1.8mm22mm46mm1.8mm
5.8mm57mm93mm5.8mm
1.9mm24mm49mm1.9mm
6.0mm57mm93mm6.0mm
2.0mm24mm49mm2.0mm
6.2mm63mm101mm6.2mm
2.1mm24mm49mm2.1mm
6.5mm63mm101mm6.5mm
2.2mm27mm53mm2.2mm
6.7mm63mm101mm6.7mm
2.3mm27mm53mm2.3mm
6.8mm69mm109mm6.8mm
2.4mm30mm57mm2.4mm
7.0mm69mm109mm7.0mm
2.5mm30mm57mm2.5mm
7.2mm69mm109mm7.2mm
2.6mm30mm57mm2.6mm
7.5mm69mm109mm7.5mm
2.7mm33mm61mm2.7mm
8.0mm

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