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Step Drill Bits

Perfect for precision drilling through metal and plastic, step bits allow users to drill multiple hole sizes with a single tool. Whether you're working on panels, junction boxes, or custom fabrication, a step bit for metal provides clean, burr-free results every time. Known as one of the best step drill bits in the industry, they offer controlled, gradual cutting without changing bits. Available individually or in step bit sets, they’re a must-have for electricians, HVAC pros, and metalworkers.

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  • hxba5crh5zql1nlwlkkk.png

    Diablo 7/8" x 1-1/8" Impact 17-Step Drill Bit

    Diablo
    $47.03 - $47.03
    $47.03
    $47.03 - $47.03
    $47.03
    In Stock

    Features Split Point Tip (132°) makes pre-drilling obsolete and stays sharper longer resulting in increased speed, maximum durability and up to 6X longer life Automated Precision CNC Grinding Process delivers strict angle tolerances on each step for minimal bit wear and 2X faster cuts in drilling and hole making Exclusive design delivers corded and cordless tool efficiency in high-speed mode for up to 75% more holes per battery charge 1/4" hex shank allows use with drills and impact drivers...
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    Diablo 7/8" x 1-3/8" Impact 15-Step Drill Bit

    Diablo
    $46.77 - $46.77
    $46.77
    $46.77 - $46.77
    $46.77
    In Stock

    Features Split Point Tip (132°) makes pre-drilling obsolete and stays sharper longer resulting in increased speed, maximum durability and up to 6X longer life Automated Precision CNC Grinding Process delivers strict angle tolerances on each step for minimal bit wear and 2X faster cuts in drilling and hole making Exclusive design delivers corded and cordless tool efficiency in high-speed mode for up to 75% more holes per battery charge 3/8” Shank with 3 Flats increases bit stability by preve...
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    Diablo 3/8" x 7/8" Impact 12-Step Drill Bit

    Diablo
    $30.98 - $30.98
    $30.98
    $30.98 - $30.98
    $30.98
    In Stock

    Features Split Point Tip (132°) makes pre-drilling obsolete and stays sharper longer resulting in increased speed, maximum durability and up to 6X longer life Automated Precision CNC Grinding Process delivers strict angle tolerances on each step for minimal bit wear and 2X faster cuts in drilling and hole making Exclusive design delivers corded and cordless tool efficiency in high-speed mode for up to 75% more holes per battery charge 1/4" hex shank allows use with drills and impact drivers...
  • cckkcueij7nqbve7lfbt.png

    Diablo 3/8" x 3/4" Impact 9-Step Drill Bit

    Diablo
    $23.55 - $23.55
    $23.55
    $23.55 - $23.55
    $23.55
    In Stock

    Features Split Point Tip (132°) makes pre-drilling obsolete and stays sharper longer resulting in increased speed, maximum durability and up to 6X longer life Automated Precision CNC Grinding Process delivers strict angle tolerances on each step for minimal bit wear and 2X faster cuts in drilling and hole making Exclusive design delivers corded and cordless tool efficiency in high-speed mode for up to 75% more holes per battery charge 1/4" hex shank allows use with drills and impact drivers...
  • yd6qlpt2eufyyzmhtwyk.png

    Diablo 1/4" x 1/2" Impact 13-Step Drill Bit

    Diablo
    $22.70 - $22.70
    $22.70
    $22.70 - $22.70
    $22.70
    In Stock

    Features Split Point Tip (132°) makes pre-drilling obsolete and stays sharper longer resulting in increased speed, maximum durability and up to 6X longer life Automated Precision CNC Grinding Process delivers strict angle tolerances on each step for minimal bit wear and 2X faster cuts in drilling and hole making Exclusive design delivers corded and cordless tool efficiency in high-speed mode for up to 75% more holes per battery charge 1/4" hex shank allows use with drills and impact drivers...
  • xhoh3uqcgiz3yyelfm7f.png

    Diablo 1/4" x 1/2" Impact 6-Step Drill Bit

    Diablo
    $22.47 - $22.47
    $22.47
    $22.47 - $22.47
    $22.47
    In Stock

    Features Split Point Tip (132°) makes pre-drilling obsolete and stays sharper longer resulting in increased speed, maximum durability and up to 6X longer life Automated Precision CNC Grinding Process delivers strict angle tolerances on each step for minimal bit wear and 2X faster cuts in drilling and hole making Exclusive design delivers corded and cordless tool efficiency in high-speed mode for up to 75% more holes per battery charge 1/4" hex shank allows use with drills and impact drivers...

  • Norseman 1/4" - 1" Type B78-AG 3-Flatted Shank, Multi Diameter Step Drill Bit

    Norseman Drill and Tool
    $100.84 - $100.84
    $100.84
    $100.84 - $100.84
    $100.84
    In Stock

  • type B78-AG.jpg

    Norseman 1/4" - 1" Type B78-AG 3-Flatted Shank, Multi Diameter Step Drill Bit - 6 Pcs

    Norseman Drill and Tool
    $154.93 - $154.93
    $154.93
    $154.93 - $154.93
    $154.93
    In Stock

  • type 78-AGN.jpg

    Norseman 3/16" - 7/8" Type B78-AGN 3-Flatted Shank, Multi Diameter Step Drill Bit - 6 Pcs

    Norseman Drill and Tool
    $193.49 - $193.49
    $193.49
    $193.49 - $193.49
    $193.49
    In Stock

  • f24b5135-7262-4da5-8709-6da13a869da0.jpeg

    Milwaukee 3/8" #9 Step Drill Bit

    Milwaukee
    $54.97 - $54.97
    $54.97
    $54.97 - $54.97
    $54.97
    In Stock

    Features JAM-FREE Performance - Dual-flute design provides greater speed and control Up to 2X faster - optimized for cordless drills in high speed Rapid Strike™ tip - creates fast, accurate starts and generates less heat Up to 4X longer bit life - optimized geometry with black oxide coating to cut faster and produce less heat Up to 50% more holes per battery charge for more productivity Laser-engraved reference marks easily stop on any hole size 3-Flat secure-grip shanks reduce bit slippage...
  • 641bc3e3-8fbf-4cdd-bc23-380c90450c83.jpeg

    Milwaukee 3/16" - 7/8" #4 Step Drill Bit

    Milwaukee
    $44.97 - $44.97
    $44.97
    $44.97 - $44.97
    $44.97
    In Stock

    Features JAM-FREE Performance - Dual-flute design provides greater speed and control Up to 2X faster - optimized for cordless drills in high speed Rapid Strike™ tip - creates fast, accurate starts and generates less heat Up to 4X longer bit life - optimized geometry with black oxide coating to cut faster and produce less heat Up to 50% more holes per battery charge for more productivity Laser-engraved reference marks easily stop on any hole size 3-Flat secure-grip shanks reduce bit slippage...

  • 1/4 - 1-3/8 by 1/8 Increments Unibit, HSS Step Drill Bit, VAC5

    Drill America
    $36.77 - $36.77
    $36.77
    $36.77 - $36.77
    $36.77
    In Stock

    Features Proposition 65 Warning This product contains Cobalt and/or Nickel and/or Lead a chemical known to the state of California to cause cancer, or birth defects or other reproductive harm. For more information: www.P65Warnings.ca.gov Specifications Size: #5 Material: High Speed Steel Finish: Uncoated (Bright) Shank Type: Round Style: Step Drill Cutting Angle: 118 Point Type: Conventional Point Number of Flutes: 2 Cutting Direction: Right Hand

One Bit, Multiple Solutions for Metal Drilling


  • Efficient Multi-Size Drilling

    • Each step bit features graduated cutting steps, allowing users to drill various hole sizes without bit changes.


  • Optimized for Metal and Plastics

    • The best step drill bit for metal handles sheet metal, stainless steel, plastic, and composites with precision.


  • Available in Step Bit Sets

    • An individual option or a full step bit set is used to cover all diameter ranges for electrical or fabrication needs.


  • Spiral and Large Step Bit Designs

    • Options include spiral step drill bits for smoother cuts and large step drill bits for broader applications.


  • Durable, Long-Lasting Build

    • Constructed from high-speed steel with titanium coatings for extended life and resistance to heat and wear.



Frequently Asked Questions About Step Drill Bits


Can step bits be used on stainless steel?

Yes, especially high-quality step bits designed for metal are effective on stainless steel.


What’s the advantage of a spiral step drill bit?

Spiral step bits offer smoother entry and reduced vibration for cleaner holes.


Is a step bit better than standard drill bits for metal?

Yes, they reduce the need for multiple bits and provide cleaner holes in thin metals.


Do I need cutting oil with step drill bits?

Yes, using cutting oil extends bit life and improves cutting efficiency in metal.


How do I choose the best step drill bit?

Look for step bits made of high-speed steel, with titanium coating, and suitable for your material thickness.

Clearance Center

  • Werner Self Trailing Rope Grab with 50% OFF Stainless Steel
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    Werner Self Trailing Rope Grab with Shock Pack, Stainless Steel

    Werner Fall Protection
    $162.00
    $162.00 - $162.00
    $162.00
    $81.00
    $81.00 - $81.00
    $81.00
    Only 1 left!

    The Werner Self-Trailing Rope Grab delivers reliable, hands-free fall protection for professionals working at height. Designed for 5/8-inch (16 mm) synthetic rope lifelines, this stainless steel rope grab automatically follows the user’s movement up and down the lifeline, providing smooth mobility and instant locking in the event of a fall. Built from premium stainless steel, the L240002 offers superior corrosion resistance and long-term durability in tough jobsite conditions. The integrated ...
  • Werner 6 ft DeCoil Tie-Back Twin Leg Lanyard, durable fall protection harness with integrated energy absorber, now available at 50% off.
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    Werner 6 ft DeCoil Tie-Back Twin Leg Lanyard

    Werner Fall Protection
    $415.20
    $415.20 - $415.20
    $415.20
    $207.60
    $207.60 - $207.60
    $207.60
    Only 7 left!

    The Werner Twin Leg Lanyard comes with a 50% offer and is designed to deliver premium fall protection, flexibility, and durability for workers in construction, maintenance, and industrial environments. Featuring tie-back capability, it allows the user to anchor directly to the structure, eliminating the need for a separate anchorage connector. With twin-leg construction, this lanyard offers 100% tie-off — ensuring continuous protection when moving between anchor points. The integrated DeCoil ...
  • Werner LITEFIT™ Small Construction Harness with tongue buckle legs — 50% off.
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    Werner LITEFIT™ Construction Harness Tongue Buckle Legs Small

    Werner Fall Protection
    $1,491.80
    $1,491.80 - $1,491.80
    $1,491.80
    $745.90
    $745.90 - $745.90
    $745.90
    10+ in stock

    The Werner LITEFIT™ Construction Harness in half of the price delivers all-day comfort, superior fit, and dependable safety for construction professionals working at height. Designed with Werner’s trusted engineering, this full-body fall arrest harness provides the perfect balance between lightweight comfort and heavy-duty durability. The tongue buckle leg straps allow for easy adjustment and a secure fit, while the built-in back D-ring ensures reliable fall arrest connection. Featuring durab...
  • Werner 50 ft Max Patrol Self-Retracting Lifeline, Galvanized Cable at 50% off

    Werner 50 ft Max Patrol Self-Retracting Lifeline, Galvanized Cable

    Werner Fall Protection
    $440.80 - $440.80
    $440.80
    $499.00
    $499.00 - $499.00
    $499.00
    Only 1 left!

    The Werner 50 ft Self-Retracting Lifeline (SRL) with galvanized steel cable provides reliable fall protection with superior reach and mobility and get 50% offer. Engineered for overhead use, this Class 1 SRL is designed to arrest falls quickly while minimizing impact forces on the user. Built with Werner’s advanced internal braking system, the Max Patrol™ SRL offers smooth deceleration and quick activation, enhancing safety in elevated work environments. The durable galvanized steel cable res...
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    Safewaze 11 ft Cable Class A Self-Retracting Lifeline with Snap Hook

    Safewaze
    $149.00
    $149.00 - $149.00
    $149.00
    $74.50
    $74.50 - $74.50
    $74.50
    Only 1 left!

    The Safewaze 11 ft Cable Class provides dependable, compact fall protection for workers at height. Designed for safety, portability, and performance, this Class A SRL features a durable galvanized steel cable and double-locking swivel snap hook to ensure secure attachment in all conditions. Engineered for construction, maintenance, and industrial applications, this self-retracting lifeline offers smooth lifeline retraction, rapid fall arrest, and minimal impact force in the event of a fall. I...
  • Radians Tecona® Smoke Anti-Fog Safety Glasses
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    Radians Tecona® Smoke Anti-Fog Safety Glasses

    Radians
    $201.24
    $201.24 - $201.24
    $201.24
    $100.62
    $100.62 - $100.62
    $100.62
    10+ in stock

    The Radians Tecona offers dependable eye protection with a lightweight and stylish wraparound design. Engineered for comfort and durability, these glasses feature a scratch-resistant smoke lens that reduces glare and eye strain in bright outdoor conditions — perfect for construction, landscaping, or industrial work. The anti-fog coating ensures clear vision even in humid or high-heat environments, while the vented rubber nosepiece and rubber-tipped temples provide a secure, non-slip fit throu...