Step Drill Bits
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Century Drill & Tool® - HSS Fractional Step Drill BitHSS Fractional Step Drill Bit by Century Drill & Tool®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and...Century step drills are for cutting in ferrous and non-ferrous metals, plastics and wood up to 1/8" thickDouble flute design reduces chatter and deburrs holes$17.34 - $36.78In Stock - Ships within 24 hrs - Install Bay® - Unibit Fractional Step Drill BitUnibit Fractional Step Drill Bit by Install Bay®. Single Fluted Design Eliminates Skidding And Makes For Easier Resharpening. Also Features Laser Etched Hole Sizes And Anti Skid Tip. Works With Most Metals.Designed to help to get your job done rightManufactured utilizing the highest quality materials$76.99 - $130.99Availability Varies - Depends on Product Options
- IRWIN® - Unibit™ Cobalt Fractional Step Drill BitUnibit™ Cobalt Fractional Step Drill Bit by IRWIN®. IRWIN® step drill bits are ideal for drilling holes in just about any type of thin material. General purpose high speed steel UNIBIT step drill bits are perfect for use in mild...6X Longer life vs. the competitionM35 grade Cobalt HSS$26.84 - $88.70Availability Varies - Depends on Product Options
- IRWIN® - Unibit™ HSS Self-Starting Fractional Step Drill BitUnibit™ HSS Self-Starting Fractional Step Drill Bit by IRWIN®. IRWIN® step drill bits are ideal for drilling holes in just about any type of thin material. General purpose high speed steel UNIBIT step drill bits are perfect for use...Single-flute cutting edge for greater control through stepsHex shank prevents slipping in drill chuck$21.18 - $79.15Availability Varies - Depends on Product Options
- IRWIN® - Unibit™ Titanium Fractional Step Drill BitUnibit™ Titanium Fractional Step Drill Bit by IRWIN®. IRWIN® step drill bits are ideal for drilling holes in just about any type of thin material. General purpose high speed steel UNIBIT step drill bits are perfect for use in mild...Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminatesSingle-flute cutting edge for greater control through steps$32.72 - $99.27Availability Varies - Depends on Product Options
- IRWIN® - Unibit™ HSS Fractional Step Drill BitUnibit™ HSS Fractional Step Drill Bit by IRWIN®. IRWIN® step drill bits are ideal for drilling holes in just about any type of thin material. General purpose high speed steel UNIBIT step drill bits are perfect for use in mild steel,...Single-flute cutting edge for greater control through stepsHex shank prevents slipping in drill chuck$36.33 - $93.63Availability Varies - Depends on Product Options
- IRWIN® - Unibit™ HSS Metric Step Drill BitUnibit™ HSS Metric Step Drill Bit by IRWIN®. IRWIN® step drill bits are ideal for drilling holes in just about any type of thin material. General purpose high speed steel UNIBIT step drill bits are perfect for use in mild steel,...Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminatesSingle-flute cutting edge for greater control through steps$20.81 - $124.62Availability Varies - Depends on Product Options
- Makita® - HSS Fractional Step Drill BitHSS Fractional Step Drill Bit by Makita®. Makita Step Drill Bit is manufactured from high speed steel for longer life. Step Bit efficiently enlarges and deburs holes. 1/4" hex shank for convenient use with both Impact Drivers and...Ideal for knockouts in electrical junction boxes and cabinetsConvenient 1/4" hex shank for quick bit changes with Impact Drivers$29.39 - $70.20Availability Varies - Depends on Product Options
- ATD® - 5-piece Step Drill Bit Set (9200)5-piece Step Drill Bit Set by ATD®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind, this product by ATD® will last a lifetime. It...#4241 High Speed Steel is perfect for drilling holes in thin mild steel, aluminum, copper, brass, plexiglass, wood and laminatesTwo flutes design for true round holes and automatically deburrs as you drill$50.56In Stock - Ships within 24 hrs
- Astro Pneumatic Tool® - 3-piece Step Drill Bit Set (9445)3-piece Step Drill Bit Set by Astro Pneumatic Tool®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and...Self-starting multiple hole sizesDrill bits can cut accurate holes in sheet metal and plastics up to 3.4mm thick$12.95In Stock - Ships in 24 to 48 hrs
- Century Drill & Tool® - #1 HSS Fractional Step Drill Bit (2 Pieces) (27200)#1 HSS Fractional Step Drill Bit (2 Pieces) (27200) by Century Drill & Tool®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will...Century step drills are for cutting in ferrous and non-ferrous metals, plastics and wood up to 1/8" thickDouble flute design reduces chatter and deburrs holes$17.34In Stock - Ships within 24 hrs
- Century Drill & Tool® - #20 HSS Fractional Step Drill Bit (2 Pieces) (27201)#20 HSS Fractional Step Drill Bit (2 Pieces) (27201) by Century Drill & Tool®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will...Century step drills are for cutting in ferrous and non-ferrous metals, plastics and wood up to 1/8" thickDouble flute design reduces chatter and deburrs holes$35.74In Stock - Ships within 24 hrs
- Century Drill & Tool® - #3 HSS Fractional Step Drill Bit (2 Pieces) (27202)#3 HSS Fractional Step Drill Bit (2 Pieces) (27202) by Century Drill & Tool®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will...Century step drills are for cutting in ferrous and non-ferrous metals, plastics and wood up to 1/8" thickDouble flute design reduces chatter and deburrs holes$31.28In Stock - Ships within 24 hrs
- Century Drill & Tool® - #4 HSS Fractional Step Drill Bit (2 Pieces) (27203)#4 HSS Fractional Step Drill Bit (2 Pieces) (27203) by Century Drill & Tool®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will...Century step drills are for cutting in ferrous and non-ferrous metals, plastics and wood up to 1/8" thickDouble flute design reduces chatter and deburrs holes$36.78In Stock - Ships within 24 hrs
- IRWIN® - Unibit™ #1 Cobalt Fractional Step Drill Bit (10231CB)Unibit™ #1 Cobalt Fractional Step Drill Bit (10231CB) by IRWIN®. IRWIN® step drill bits are ideal for drilling holes in just about any type of thin material. General purpose high speed steel UNIBIT step drill bits are perfect for use...6X Longer life vs. the competitionM35 grade Cobalt HSS$26.84In Stock - Ships in 24 to 48 hrs
- IRWIN® - Unibit™ #1 HSS Self-Starting Fractional Step Drill Bit (10231)Unibit™ #1 HSS Self-Starting Fractional Step Drill Bit (10231) by IRWIN®. IRWIN® step drill bits are ideal for drilling holes in just about any type of thin material. General purpose high speed steel UNIBIT step drill bits are...Single-flute cutting edge for greater control through stepsHex shank prevents slipping in drill chuck$22.64In Stock - Ships within 24 hrs
- IRWIN® - Unibit™ #10 HSS Self-Starting Fractional Step Drill Bit (10310)Unibit™ #10 HSS Self-Starting Fractional Step Drill Bit (10310) by IRWIN®. IRWIN® step drill bits are ideal for drilling holes in just about any type of thin material. General purpose high speed steel UNIBIT step drill bits are...Single-flute cutting edge for greater control through stepsHex shank prevents slipping in drill chuck$24.42In Stock - Ships within 24 hrs
- IRWIN® - Unibit™ #1T Titanium Fractional Step Drill Bit (15101)Unibit™ #1T Titanium Fractional Step Drill Bit (15101) by IRWIN®. IRWIN® step drill bits are ideal for drilling holes in just about any type of thin material. General purpose high speed steel UNIBIT step drill bits are perfect for...Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminatesSingle-flute cutting edge for greater control through steps$32.72In Stock - Ships within 24 hrs
- IRWIN® - Unibit™ #2 HSS Self-Starting Fractional Step Drill Bit (10232)Unibit™ #2 HSS Self-Starting Fractional Step Drill Bit (10232) by IRWIN®. IRWIN® step drill bits are ideal for drilling holes in just about any type of thin material. General purpose high speed steel UNIBIT step drill bits are...Single-flute cutting edge for greater control through stepsHex shank prevents slipping in drill chuck$21.18In Stock - Ships in 24 to 48 hrs
- IRWIN® - Unibit™ #20 HSS Hole Enlarging Fractional Step Drill Bit (10220)Unibit™ #20 HSS Hole Enlarging Fractional Step Drill Bit by IRWIN®. IRWIN® step drill bits are ideal for drilling holes in just about any type of thin material. General purpose high speed steel UNIBIT step drill bits are perfect for...Single-flute cutting edge for greater control through stepsHex shank prevents slipping in drill chuck$40.27In Stock - Ships in 24 to 48 hrs
- IRWIN® - Unibit™ #3M HSS Metric Step Drill Bit (11103)Unibit™ #3M HSS Metric Step Drill Bit (11103) by IRWIN®. IRWIN® step drill bits are ideal for drilling holes in just about any type of thin material. General purpose high speed steel UNIBIT step drill bits are perfect for use in mild...Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminatesSingle-flute cutting edge for greater control through steps$38.12In Stock - Ships in 24 to 48 hrs
- IRWIN® - Unibit™ #4 HSS Self-Starting Fractional Step Drill Bit (10234)Unibit™ #4 HSS Self-Starting Fractional Step Drill Bit (10234) by IRWIN®. IRWIN® step drill bits are ideal for drilling holes in just about any type of thin material. General purpose high speed steel UNIBIT step drill bits are...Single-flute cutting edge for greater control through stepsHex shank prevents slipping in drill chuck$51.09In Stock - Ships within 24 hrs
- IRWIN® - Unibit™ #4T Titanium Fractional Step Drill Bit (15104)Unibit™ #4T Titanium Fractional Step Drill Bit (15104) by IRWIN®. IRWIN® step drill bits are ideal for drilling holes in just about any type of thin material. General purpose high speed steel UNIBIT step drill bits are perfect for...Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminatesSingle-flute cutting edge for greater control through steps$60.08In Stock - Ships in 24 to 48 hrs
- IRWIN® - Unibit™ 3-piece TiN Step Drill Bit Set (15502)Unibit™ 3-piece TiN Step Drill Bit Set by IRWIN®. IRWIN® step drill bits are ideal for drilling holes in just about any type of thin material. General purpose high speed steel UNIBIT step drill bits are perfect for use in mild steel,...Single-flute cutting edge for greater control through steps3 flatted shank prevents slipping in drill chuck$125.21In Stock - Ships within 24 hrs
- IRWIN® - Unibit™ 4-piece HSS Step Drill Bit Set (10225)Unibit™ 4-piece HSS Step Drill Bit Set by IRWIN®. IRWIN® step drill bits are ideal for drilling holes in just about any type of thin material. General purpose high speed steel UNIBIT step drill bits are perfect for use in mild steel,...Single-flute cutting edge for greater control through steps3 flatted shank prevents slipping in drill chuck$170.59In Stock - Ships in 24 to 48 hrs
- Install Bay® - #1 Unibit Fractional Step Drill Bit (IB59001)#1 Unibit Fractional Step Drill Bit (IB59001) by Install Bay®. Single Fluted Design Eliminates Skidding And Makes For Easier Resharpening. Also Features Laser Etched Hole Sizes And Anti Skid Tip. Works With Most Metals.Designed to help to get your job done rightManufactured utilizing the highest quality materials$76.99In Stock - Ships in 24 to 48 hrs
- KnKut® - 3-piece Gold Oxide Hole Expansion Fractional Step Drill Bit Set (3KK4SR)3-piece Gold Oxide Hole Expansion Fractional Step Drill Bit Set by KnKut®. USA Made KnKut Step Reamers accurately starts on contact and enlarges and deburrs holes in material up the 1/2" thick. Gold Oxide treatment enhances lubricity,...90° Notch Point starts holes easily5 hole enlargement steps$143.29In Stock - Ships in 24 to 48 hrs
- Makita® - 1/4" to 3/4" HSS Fractional Step Drill Bit (711493-A)1/4" to 3/4" HSS Fractional Step Drill Bit (711493-A) by Makita®. Makita Step Drill Bit is manufactured from high speed steel for longer life. Step Bit efficiently enlarges and deburs holes. 1/4" hex shank for convenient use with both...Ideal for knockouts in electrical junction boxes and cabinetsConvenient 1/4" hex shank for quick bit changes with Impact Drivers$39.14In Stock - Ships in 24 to 48 hrs
- Makita® - 1/8" to 1/2" HSS Fractional Step Drill Bit (711492-A)1/8" to 1/2" HSS Fractional Step Drill Bit (711492-A) by Makita®. Makita Step Drill Bit is manufactured from high speed steel for longer life. Step Bit efficiently enlarges and deburs holes. 1/4" hex shank for convenient use with both...Ideal for knockouts in electrical junction boxes and cabinetsConvenient 1/4" hex shank for quick bit changes with Impact Drivers$29.39In Stock - Ships in 24 to 48 hrs
- Milwaukee® - #12 Black Oxide Fractional Step Drill Bit (48-89-9212)#12 Black Oxide Fractional Step Drill Bit by Milwaukee®. If you’re looking for a reliable solution to complete your project, this 1st-grade product is right up your alley. Designed utilizing the finest materials, it delivers unmatched...Designed to help to get your job done rightManufactured utilizing the highest quality materials$69.97In Stock - Ships in 24 to 48 hrs
Step drill bits are widely used in plumbing and general construction to make round holes in soft materials. However, they can also be applicable for very thin stainless steel, aluminum, brass, copper and other metals. These versatile tools are particularly handy when it comes to enlarging holes that have already been drilled. A step drill bit features a unique staircase profile that allows it to cut holes of different diameters. It has a smaller pilot drill point that drills the initial small holes, and to be able to achieve the desired size of the hole it’s recommended to advance the drill bit further into the material. Step drill bits are usually coated in a titanium-nitride coating that helps minimize heat build-up, enhance surface hardness and ensure long-lasting service.
Whether you are a professional contractor, a plumber or a hobbyist working on your own construction project, high-quality step drill bits offered on our website will give you the reliability and versatility you need to perform your tasks as easily and effectively as possible. Now you can create perfect round holes, enlarge the existing ones or deburr holes left by other bits using only one tool – and that’s the step drill bit. Here, we carry a full line of first-rate step drill bits that are made from the sturdiest materials such as high-speed steel to bring the ultimate in performance and wear resistance. Most step drill bits showcased in our online store have a flatted shank or hex shank that allows to avoid slipping in drill chuck.
