Industrial M35 Cobalt HSS Twist Drill Bit for Stainless Steel (Inox) – OEM

Master the Toughest Metals with Superior Red Hardness and Precision

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Specifications

Product Name	Industrial M35 Cobalt HSS Twist Drill Bit (5% Cobalt, 135° Split Point)
Tool Type	Cobalt High-Speed Steel Twist Drill (HSS-Co)
Material	M35 Grade High-Speed Steel (5% Cobalt content)
Tip Angle	135 Degree Split Point (Self-centering, no center punch required)
Surface Finish	Amber Finish (Heat-treated for reduced friction)
Shank Type	Straight Shank (Standard DIN338 / ANSI)
Target Material	Stainless Steel (Inox), Hardened Steel, Cast Iron, High-Temperature Alloys
Hardness Range	Up to HRC 65-67 (Excellent Red Hardness)
Brand Name	Xiaoman Tools
Manufacturer	Shanghai Daoge Xiaoman Tools Co., Ltd.
Customized Support	100% OEM/ODM (Custom sizes, laser etching, plastic tube/set packaging)

Why buyers pick this one

5% Cobalt Alloy (M35 Grade): Provides significantly higher heat and wear resistance than standard HSS. Designed to cut through 304/316 stainless steel and other high-strength alloys where standard bits fail.
135° Self-Centering Split Point: The specialized cross-grind tip starts cutting immediately on contact. This prevents the bit from skating across the workpiece and ensures perfectly round, burr-free holes.
Superior Red Hardness: Remains sharp even when the cutting edge turns red-hot under heavy load, making it the ideal choice for continuous production lines and heavy fabrication.
Fully Ground Flutes: Precision CNC-milled flutes ensure rapid chip evacuation and minimize heat buildup, preventing the bit from binding in deep-hole applications.
Industrial Amber Finish: The specialized oxide layer improves lubricant retention and provides a professional aesthetic that signals high-performance quality to industrial buyers.

Overview

Stop burning through standard bits when tackling tough alloys. The M35 Cobalt HSS Twist Drill Bits from Shanghai Daoge Xiaoman Tools Co., Ltd. are specifically engineered for heavy-duty industrial drilling in high-tensile materials. Forged from premium M35 High-Speed Steel with 5% Cobalt content, these bits exhibit exceptional "Red Hardness," maintaining their razor-sharp cutting edges even at extreme temperatures generated by drilling Stainless Steel (Inox), Cast Iron, and Hardened Metals. Featuring a high-performance 135-degree Split Point, these bits are self-centering, preventing "walking" on smooth surfaces and eliminating the need for a center punch. The distinctive Amber Finish is the result of precision heat treatment, acting as a lubricant-retaining layer that reduces friction and extends tool life by up to 10X compared to standard HSS bits. Available for direct B2B wholesale with full OEM customization for your global distribution needs.