Trying to bore a clean hole through heavy stainless steel, hardened iron, or thick structural metal plates with a standard high-speed steel bit, only to watch the cutting edges dull out, smoke, and turn blue from intense friction heat? Regular steel drill bits soften and fail the moment they face high-tensile alloys. The Ingco DBT01131101 Industrial M35 Cobalt HSS Twist Drill Bit is engineered to slice through the absolute toughest, hardest metals with fluid speed and continuous cutting accuracy. Measuring a substantial 11mm in drilling diameter, this professional-grade bit is built with a premium metallurgical matrix designed specifically to withstand extreme friction temperatures that would ruin standard bits.

The secret weapon behind this bit is its authentic M35 alloy formulation, containing 5% cobalt premium element blended right into the high-speed steel (HSS-Co). This cobalt integration dramatically raises the bit's red-hardness threshold, meaning the cutting edges remain razor-sharp even when glowing under massive drilling friction. The business end features a self-centering 135-degree split point tip layout. This advanced point geometry prevents the bit from wandering or skating across slick metal sheets, biting into the material instantly on contact without requiring a center punch. To ensure clean, rapid material clearance and prevent chip clogging, it features a precision-ground high-capacity spiral flute layout that pulls hot metal curls smoothly out of the channel. Finished with a distinct golden-bronze thermal treatment color, this industrial workhorse is a non-negotiable requirement for metal fabricators, automotive engineers, machine shops, and structural contractors!

Technical Specifications

• Brand: INGCO

• Model: DBT01131101

• Product Type: Industrial-Grade M35 Cobalt High-Speed Steel (HSS-Co) Twist Drill Bit

• Bit Metric Size: 11mm Precision Drilling Diameter

• Material Composition: Premium M35 High-Speed Steel Alloyed with 5% Cobalt Matrix

• Tip Geometry Design: 135-Degree Self-Centering Split Point Tip Layout (prevents bit walking)

• Flute Profile Design: Precision-Ground Double Spiral Flute configuration for rapid metal chip extraction

• Shank Interface Layout: Straight Round Shank Profile (Fits standard 13mm / 1/2-inch capacity drill chuck matrices)

• Heat Resistance Level: Ultra-High Red-Hardness thermal tolerance threshold

• Surface Protection Finish: Distinctive Industrial Bronze-Oxide Thermal Tempering Treatment

• Primary Target Substrates: High-tensile stainless steel sheets (grades 304 / 316), heavy iron plates, cast iron blocks, high-carbon tool steel, alloyed structural metals, aluminum plates, and dense copper sheets

• Primary Applications: Boring holes in heavy industrial machinery frames, installing bolts in stainless steel brackets, repairing heavy transport trailer chassis, drilling through thick metal plates for structural framing, and general machine shop metal fabrication

• Packaging Type: Supplied securely inside a high-visibility commercial plastic hanging case or single blister card packaging layout