Advertiser Disclosure

You’re our priority.
Every time.

ProductUpdates is reader-supported. When you buy through links on our site, we may earn an affiliate commission. As an Amazon Associate we earn from qualifying purchases.

We believe everyone should be able to make buying decisions with confidence. And while our site doesn’t feature every company or product available on the market, we’re proud that the guidance we offer, the information we provide, and the tools we create are objective, independent, straightforward — and free!

All recommendations on the site are grounded in thousands of hours of research. We never receive payment to speak favorably of a product or service. Learn more.

Hymnorq Metric M35 Cobalt Steel Extremely Heat Resistant Twist Drill Bits with Straight Shank Set of 13pcs to Cut Through Hard Metals Such as Stainless Steel and Cast Iron

By Hymnorq

8.8
  693 reviews


Product info:

• Part Number DC023
• Dimensions 2.76 x 5.12 x 0.59 Inches


Product features

COBALT STEEL - Manufactured from M35 cobalt steel, with molybdenum and cobalt added to creates a hardened alloy, measuring Rockwell hardness up to 67, extremely heat resistant; for much faster cutting and extra longer life span, with up to twelve times when compared with an average HSS drill bit.

NO CENTER PUNCH NEEDED - The 135° Quick-Cut points are self-centering and penetrate quickly with less pressure. Will not "walk" or "wander". Straight shank allows for firmly holding and accurate centering, fit for standard drill chucks and regular round collet chucks. Must be used and operated at proper RPMs for maximum efficiency

13PC METRIC BITS - The set includes 13pcs of M35 cobalt steel twist drill bits: 1.5mm, 2mm, 2.5mm, 3mm, 3.2mm, 3.5mm, 4mm, 4.5mm, 4.8mm, 5mm, 5.5mm, 6mm, 6.5mm. Well organized in a plastic indexed storage case for easy transport to your worksite.

FOR METALWORKING - Particularly successful in cutting through hard metals such as stainless steel and cast iron, although they can be used for softer materials, too. Not for hardened steel / high carbon steel. Try to adjust the RPM when it fails to penetrate.

DOWNLOADABLE USER GUIDE - We've summed up some tips of drilling metals, including a RPM chart for several common metals, based on our reviews and some articles on the internet. In most cases, our customers would get a much better result with these tips. Welcome to download.

Customer Reviews

ProductUpdates always strives to have the latest information. Our website does not directly sell products or any services. The information on the website is for reference only, and may be different from what you see when accessing the service provider and the website of the particular product.

As an Amazon Associate we earn from qualifying purchases. We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites. Read our full Privacy Policy.

Our "AI Consumer Report" uses big data to consider users' reviews as well as internet discussions. We use AI Consumer Report with ranking algorithms to arrange and score products. Contact Us

Sitemap: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, ALL.

CA Do Not Sell My Info | VISIT US ON GOOGLE NEWS