--- product_id: 453250798 title: "8.5mm Metric M35 Cobalt Steel Extremely Heat Resistant Twist Drill Bit of 1pcs with Straight Shank to Cut Through Hard Metals Such as Stainless Steel and Cast Iron, 5% Cobalt M35 Grade HSS-CO" brand: "linggan" price: "VT3184" currency: VUV in_stock: true reviews_count: 13 category: "Ling Gan" url: https://www.desertcart.vu/products/453250798-8-5mm-metric-m35-cobalt-steel-extremely-heat-resistant-twist store_origin: VU region: Vanuatu --- # Heat Resistant - Titanium Coating for Cooler Drilling 135° Point Angle - Precision & Stability M35 Cobalt Steel - Rockwell Hardness 65 8.5mm Metric M35 Cobalt Steel Extremely Heat Resistant Twist Drill Bit of 1pcs with Straight Shank to Cut Through Hard Metals Such as Stainless Steel and Cast Iron, 5% Cobalt M35 Grade HSS-CO **Brand:** linggan **Price:** VT3184 **Availability:** ✅ In Stock ## Summary > 🔧 Drill Like a Pro, Last Like a Legend! ## Quick Answers - **What is this?** 8.5mm Metric M35 Cobalt Steel Extremely Heat Resistant Twist Drill Bit of 1pcs with Straight Shank to Cut Through Hard Metals Such as Stainless Steel and Cast Iron, 5% Cobalt M35 Grade HSS-CO by linggan - **How much does it cost?** VT3184 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/453250798-8-5mm-metric-m35-cobalt-steel-extremely-heat-resistant-twist) ## Best For - linggan enthusiasts ## Why This Product - Trusted linggan brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Metal Mastery:** Engineered to slice through tough metals like stainless steel and cast iron with ease. - • **Unmatched Durability:** M35 5% cobalt alloy delivers up to 10x longer life than standard HSS bits. - • **Cool & Precise Cutting:** Titanium coating and 2-flute design reduce friction and heat for faster, cleaner holes. - • **Effortless Chip Removal:** Spiral flutes and staggered teeth clear debris efficiently, minimizing chatter. - • **Universal Compatibility:** Straight shank fits standard drill chucks for secure, accurate drilling every time. ## Overview This 8.5mm M35 cobalt steel drill bit features a hardened 5% cobalt alloy with titanium coating, delivering exceptional heat resistance and durability. Its 135° point angle and dual-flute spiral design ensure precise, chatter-free drilling through hard metals such as stainless steel and cast iron, making it an essential tool for professionals demanding longevity and performance. ## Description Product description M35 HSS-CO M35 cobalt-containing stainless steel twist drill is one of the twist drills. It is named after the cobalt contained in the material. Most of them are used to process stainless steel. they have higher hardness and higher precision. M35 cobalt-containing alloy is more wear-resistant The addition of cobalt greatly improves the high temperature resistance and anti-abrasion properties of the drill, they have higher hardness and higher precision. Spiral flutes, edge flutes Enlarge the chip flute to prevent chip accumulation, drilling smoothly, and the edge groove design can effectively prevent the accumulation of chips. Universal round shank for tight grip and no slippage Universal round shank design, easy to hold, fast and stable installation during processing, and not easy to damage. Sharpened head for sharper cutting Sharp and wear-resistant, not easy to chip, scientific design, keep improving. Product Information Stainless steel special drill High hardness, high strength, suitable for drilling operations of various materials Anti-slip chamfered round handle The clamping is tightened without slipping, and the shank is quenched at high temperature to strengthen the anti-break treatment. Double edge grooving process Easier to remove chips, improve punching efficiency, and work more smoothly M35 cobalt drill bits are suitable for Stainless steel Aluminum alloy iron copper die steel Review: Great Drill Bits! - Cobalt drill bit worked great with tapping fluid. Used for boring 6061-T6 forged aluminum. Made sure to re-apply tapping fluid when feeling slight friction before continuing. Also used it for tapping 5mm threads in the same 4.2mm drilled hole as recommended for best clearance. Thought I wanted a hex shank but the round shank is better for less wobble and precise concentric drilling since i used a hand held drill. Worked like a charm! Review: As described - Functional and proper metric sizes. Used in plastics and metal. ## Features - Cobalt Steel - Manufactured From M35 5% Cobalt Steel, With Molybdenum And Cobalt Added To Creates A Hardened Alloy, Measuring Rockwell Hardness Up To 65, For Much Faster Cutting And Extra Longer Life Span, With Up To 10 Times When Compared with an Average HSS Drill Bit. - HSS Titanium Coating - Classic HSS Construction With Titanium Coating For Capability And Durability. The Cutting Edge Is Hardened And Honed For Sharpness. - Flutes Form - 2 Flutes Form Helps Clear Chips And Debris Away From The Bit, Decreasing Friction And Heat For A Faster, Cooler Drilling Process, Chatter-Free Design With Staggered Cutting Teeth Ensure The Precise Countersinking And Hole Smooth Clean. - Straight Shank And 135° Point Angle - Straight Shank For Standard Drill Chucks And Collet Chuck To Hold Firmly, Assuring Accurate Centering; Helical Flute For Swarf To Easily Get Out; Ideal For General Purpose Drilling Applications. - For Metalworking - Particularly Successful In Cutting Through Hard Metals(Hardness Less Than Hrc38°) Such As Stainless Steel And Cast Iron, Although They Can Be Used For Softer Materials Like Copper And Aluminium, Too. Not For Hardened Steel And High Carbon Steel. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08NYSZ571 | | Best Sellers Rank | #1,487 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #2 in Metalworking & Multipurpose Drill Sets | | Brand | LingGan | | Brand Name | LingGan | | Customer Reviews | 4.4 out of 5 stars 1,311 Reviews | | Cutting Angle String | 135 Degrees | | Cutting Diameter | 8.5 Millimeters | | Finish Type | Titanium | | Finish Types | Titanium | | Item Dimensions | 4.61 x 0.33 x 0.33 inches | | Item Weight | 0.04 Kilograms | | Manufacturer | LingGan | | Material | M35 Cobalt High Speed Steel | | Material Type | M35 Cobalt High Speed Steel | | Minimum Bore Diameter | 8.5 Millimeters | | Model | 2020-11-21-15-75 | | Number of Flutes | 2 | | Part Number | 2020-11-21-15-75 | | Point Style | Taper Point | | Set Name | No Set | | Shank Type | Straight | | Surface Recommendation | Stainless Steel,Cast Iron,Steel,Metals | | Tool Flute Type | Spiral | | Unit Count | 1 Count | ## Product Details - **Material:** M35 Cobalt High Speed Steel - **Cutting Diameter:** 8.5 Millimeters - **Finish Type:** Titanium - **Shank Type:** Straight - **Cutting Angle String:** 135 Degrees ## Images ![8.5mm Metric M35 Cobalt Steel Extremely Heat Resistant Twist Drill Bit of 1pcs with Straight Shank to Cut Through Hard Metals Such as Stainless Steel and Cast Iron, 5% Cobalt M35 Grade HSS-CO - Image 1](https://m.media-amazon.com/images/I/511Il9mmnmL.jpg) ![8.5mm Metric M35 Cobalt Steel Extremely Heat Resistant Twist Drill Bit of 1pcs with Straight Shank to Cut Through Hard Metals Such as Stainless Steel and Cast Iron, 5% Cobalt M35 Grade HSS-CO - Image 2](https://m.media-amazon.com/images/I/41-m3+XF9iL.jpg) ![8.5mm Metric M35 Cobalt Steel Extremely Heat Resistant Twist Drill Bit of 1pcs with Straight Shank to Cut Through Hard Metals Such as Stainless Steel and Cast Iron, 5% Cobalt M35 Grade HSS-CO - Image 3](https://m.media-amazon.com/images/I/41vdd9E1X3L.jpg) ![8.5mm Metric M35 Cobalt Steel Extremely Heat Resistant Twist Drill Bit of 1pcs with Straight Shank to Cut Through Hard Metals Such as Stainless Steel and Cast Iron, 5% Cobalt M35 Grade HSS-CO - Image 4](https://m.media-amazon.com/images/I/51m4pYbk9+L.jpg) ![8.5mm Metric M35 Cobalt Steel Extremely Heat Resistant Twist Drill Bit of 1pcs with Straight Shank to Cut Through Hard Metals Such as Stainless Steel and Cast Iron, 5% Cobalt M35 Grade HSS-CO - Image 5](https://m.media-amazon.com/images/I/41+WrJSIfuL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great Drill Bits! *by A***A on April 28, 2026* Cobalt drill bit worked great with tapping fluid. Used for boring 6061-T6 forged aluminum. Made sure to re-apply tapping fluid when feeling slight friction before continuing. Also used it for tapping 5mm threads in the same 4.2mm drilled hole as recommended for best clearance. Thought I wanted a hex shank but the round shank is better for less wobble and precise concentric drilling since i used a hand held drill. Worked like a charm! ### ⭐⭐⭐⭐⭐ As described *by T***R on May 18, 2026* Functional and proper metric sizes. Used in plastics and metal. ### ⭐⭐⭐⭐⭐ Nice quality bit *by K***D on April 14, 2026* The bit worked well for drilling through thin steel legs for a laundry sink. I used tap magic oil and the bit went through pretty well. You just have to remember a slower speed is better when drilling through metal, too fast and the bit can't dig into the metal and you will just burn the bit out. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vu/products/453250798-8-5mm-metric-m35-cobalt-steel-extremely-heat-resistant-twist](https://www.desertcart.vu/products/453250798-8-5mm-metric-m35-cobalt-steel-extremely-heat-resistant-twist) --- *Product available on Desertcart Vanuatu* *Store origin: VU* *Last updated: 2026-06-07*