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HSS Reduced Shank Drill Bits
Premium HSS milled bit delivers hardness, toughness and long wear life
Reduced shank ensures stable non-slip drilling for all drills
135° split point enables precise self-centering metal drilling
Precision ground flute accelerates chip removal and reduces heat
Wide size range fits steel, iron and aluminum for industrial drilling
Trusted by Global Brands
OEM Partner for Industry Leaders
Customization & Packaging
Complete OEM/ODM solutions tailored to your brand requirements
Build Your Own Brand with HSS Reduced Shank Drill Bits
- Point Type Custom Optional: 118° Regular Point / 135° Split Point / Turbo Point / Pilot Point.
- Shank Type Custom Available: Tri-flats Reduced Shank / Straight / Hex / Double R Hex / Threaded Hex / Taper Shank.
- Helix & Flute Custom Regular/ Slow/ Fast/ Left Hand Spiral; Regular/ Thick Web Parabolic/ Heavy Duty Web flute type optional.
- Surface Finish & Package Custom Finish: Titanium / Bright / Black Oxide / Amber / Black & Gold / Black & Bright
Application Notes
Discover the versatile applications and material compatibility of our products
Drilling Aluminum
- •HSS reduced shank drill bits are designed for drilling larger holes in aluminum with standard drill chucks. The reduced shank design improves tool compatibility, while the sharp cutting edge supports smooth drilling, clean hole edges, and stable chip removal.
Drilling Stainless Steel
- •HSS reduced shank drill bits are designed for drilling larger holes in stainless steel with standard drill chucks. The reduced shank improves tool compatibility, while the durable cutting edge helps resist heat, reduce slipping, and support stable drilling in high-friction metal applications.
Real Factory & Application Videos
Watch real manufacturing and field applications to verify quality, performance, and supply capability
How to choose twist drills for bulk purchase without losing cost?
Premium Material: Made of M2/M35/M42 HSS & cobalt steel with high HRC hardness, perfect for drilling stainless steel, cast iron and aluminum, no slipping or chipping.
Which factory offers more stable quality for high-hardness twist drills?
Superior Craftsmanship: Fully ground precise fluting with high concentricity and smooth chip removal, not easy to wear or break in long-term mass processing.
Have you found the right supplier for stainless steel cutting 15mm twist drills?
Standard Specification: Strictly follow DIN338 standard, standard 15mm size, compatible with all kinds of drilling machines and CNC equipment.
Our Production Process
From raw materials to finished products, every step is meticulously controlled to ensure superior quality and precision.
Raw Material Cutting
Heat Treatment
Coarse Grinding
Shank Grinding
Flute Edge Grinding
Fine Grinding
Double Angle
Angle Grinding
Sharping Edge
International Certifications
Our products meet the highest international standards and are certified by leading quality organizations worldwide.
RoHS Certificate
• Expiry Date:2027.10.05
ISO 9001:2015
• Expiry Date:2028.10.05
SGS Audit Report
• Expiry Date:2028.01.05
Product Spec Table
| SKU | Key Specs | Material / Coating | Packaging |
|---|---|---|---|
| 13/32"/10.5mm | 87mm Flute Length / 133mm Overall Length | M35/M42 Custom Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 27/26"/11mm | 94mm Flute Length / 142mm Overall Length | M35/M42 Custom Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 7/16"/11.5mm | 94mm Flute Length / 142mm Overall Length | M35/M42 Custom Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 15/32"/12mm | 101mm Flute Length / 151mm Overall Length | M35/M42 Custom Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 31/64"/12.5mm | 101mm Flute Length / 151mm Overall Length | M35/M42 Custom Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 1/2"/13.0mm +mm | 101mm Flute Length / 151mm Overall Length | M35/M42 Custom Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 17/32"/13.5mm | 108mm Flute Length / 160mm Overall Length | M35/M42 Custom Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 9/16"/14.0mm | 108mm Flute Length / 160mm Overall Length | M35/M42 Custom Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 37/64"/14.5mm | 114mm Flute Length / 169mm Overall Length | M35/M42 Custom Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 19/32"/15.0mm | 114mm Flute Length / 169mm Overall Length | M35/M42 Custom Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 39/64"/15.5mm | 120mm Flute Length / 178mm Overall Length | M35/M42 Custom Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 5/8"/16.0mm | 120mm Flute Length / 178mm Overall Length | M35/M42 Custom Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 21/32"/16.5mm | 125mm Flute Length / 184mm Overall Length | M35/M42 Custom Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 43/64"/17.0mm | 125mm Flute Length / 184mm Overall Length | M35/M42 Custom Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 11/16"/17.5mm | 130mm Flute Length / 191mm Overall Length | M35/M42 Custom Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 45/64"/18.0mm | 130mm Flute Length / 191mm Overall Length | M35/M42 Custom Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 47/64"/18.5mm | 135mm Flute Length / 198mm Overall Length | M35/M42 Custom Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 3/4"/19.0mm | 135mm Flute Length / 198mm Overall Length | M35/M42 Custom Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 49/64"/19.5mm | 140mm Flute Length / 205mm Overall Length | M35/M42 Custom Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 25/32"/20.0mm | 140mm Flute Length / 205mm Overall Length | M35/M42 Custom Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
Frequently Asked Questions
Everything you need to know about our products, customization options, and ordering process.
What is a reduced shank drill bit?
It is a drill bit with a thinner shank than its cutting diameter, allowing large-size drill bits to fit standard regular drill chucks.
What is the purpose of a reduced shank drill bit?
It allows large-diameter hole drilling on ordinary electric drills, avoiding the need for oversized special drill chucks.
What does shank mean on a drill bit?
The shank is the rear clamping part of a drill bit that fits into the drill chuck to transfer rotation power.
What is a shank drill bit used for?
It is used for drilling metal, wood and plastic, suitable for daily repair, industrial processing and general DIY drilling work.
What is the advantage of reduced shank drills over straight shank drills?
It fits standard small chucks for large drill sizes, better compatibility, lower tool cost and wider application range.
What part of a drill bit is the shank?
The shank is the smooth rear tail section of a drill bit, the non-cutting part fixed inside the drill chuck.The shank is the smooth rear tail section of a drill bit, the non-cutting part fixed inside the drill chuck.
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Trusted by businesses worldwide
See what our global partners say about our premium drilling tools and cutting solutions.
"We adopt these HSS reduced shank drill bits for large drilling equipment. The long shank design fits our heavy-duty machine perfectly, no slipping during high-speed drilling. Batch quality is super consistent for our factory mass production."
Mark Wilson
Factory Procurement Manager
Canada
"As a local hardware distributor, we love the reduced shank design. It covers more drill press models, easy for stock assortment. Reasonable wholesale price and low MOQ help us expand retail channels quickly."
Luca Ferrari
Hardware Wholesale Distributor
Italy
"We use these reduced shank drill bits for thick plate metal engineering. Centering performance is accurate, no deviation when drilling deep holes. Delivery is always on time for our project schedules."
Thomas Schmidt
Construction Project Contractor
Germany
"We adopt these HSS reduced shank drill bits for large drilling equipment. The long shank design fits our heavy-duty machine perfectly, no slipping during high-speed drilling. Batch quality is super consistent for our factory mass production."
Mark Wilson
Factory Procurement Manager
Canada
"As a local hardware distributor, we love the reduced shank design. It covers more drill press models, easy for stock assortment. Reasonable wholesale price and low MOQ help us expand retail channels quickly."
Luca Ferrari
Hardware Wholesale Distributor
Italy
"We use these reduced shank drill bits for thick plate metal engineering. Centering performance is accurate, no deviation when drilling deep holes. Delivery is always on time for our project schedules."
Thomas Schmidt
Construction Project Contractor
Germany
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