Ingco 3.0mm M35 5% Cobalt HSS-Co Twist Drill Bit - Heavy-Duty Fully Ground High-Speed Steel Metal Drilling Bit for Stainless Steel, Cast Iron, and Hard Alloys (DBT01130121)

Drilling clean, precise holes into tough stainless steel plates, high-tensile structural beams, or dense cast iron alloys using standard high-speed steel (HSS) bits is an easy way to ruin your tools. The extreme friction generated when cutting hard metals creates intense thermal buildup, causing standard drill tips to soften, dull, and burn out within seconds. The Ingco DBT01130121 Professional 3.0mm M35 Cobalt Twist Drill Bit is an industrial-grade metalworking accessory engineered to master the hardest drilling substrates. Formulated with a specialized 5% Cobalt alloy core, this high-performance twist drill retains its structural hardness and razor-sharp cutting geometry under intense high-heat operations.

The outstanding durability and aggressive cutting performance of this bit stem from its premium fully ground M35 High-Speed Cobalt Steel (HSS-Co) construction. Featuring a specialized 135-degree split point cutting head tip design, this bit bites directly into smooth metals upon contact with zero "walking" or drifting, completely eliminating the need for a pre-punched pilot hole. The precision-engineered dual-spiral flute channel profile provides rapid, continuous metal chip evacuation, which lowers running friction and prevents heat buildup. Built with a standard straight cylindrical shank, it fits securely into manual chucks, cordless drill drivers, and stationary benchtop drill presses for absolute tracking alignment on the job site.

Technical Specifications

• Brand: INGCO

• Model: DBT01130121

• Product Type: Professional M35 5% Cobalt High-Speed Steel (HSS-Co) Twist Drill Bit

• Drilling Diameter Sizing: 3.0mm Precision Hole Cutting Sizing

• Flute Length Profile: 33mm Working Depth Flute Layout

• Total Tool Length Profile: 61mm Total Tool Footprint Sizing

• Shank Interface Layout: Standard Straight Cylindrical Shank (universal manual chuck fitment)

• Cutting Head Geometry: 135-Degree Split Point Tip Layout (self-centering, anti-walk architecture)

• Material Matrix Composition: Industrial-Grade M35 High-Speed Steel infused with 5% Cobalt (HSS-Co)

• Manufacturing Process: Premium fully ground from solid steel stock with advanced amber thermal surface hardening treatment

• Machine Compatibility Match: Universal installation suitability for standard 20V cordless power drills, manual corded impact drills, and industrial workshop bench drill presses

• Primary Target Substrates: Austenitic stainless steel (304, 316), heavy structural carbon steels, cast iron molds, tough tool steels, sheet metal plates, copper sheets, and high-strength aluminum alloys

• Primary Applications: Drilling precise pilot holes for metal fasteners, sheet metal fabrications, automotive chassis repairs, industrial pipeline pipe assemblies, and structural steel framing setups

• Total Package Quantity: 1 Piece Retail Pack Layout

• Packaging Type: Supplied securely enclosed inside an eye-catching commercial plastic sheath hanger card layout for absolute cutting edge safety and clean warehouse shelf tracking