Klein Tools 12-Step Drill Bit ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$104.86
$51.65
Klein Tools KTSB14 12-Step Drill Bit, 3/8-Inch Hex, Double Straight Flute, 3/16-Inch to 7/8-Inch

Klein Tools 12-Step Drill Bit 3/8-Inch Hex with AlTiN Coating 3/16-Inch to 7/8-Inch Professional Drilling System

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Model: KTSB14
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$104.86
$51.65
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Klein Tools 12-Step Drill Bit 3/8-Inch Hex with AlTiN Coating 3/16-Inch to 7/8-Inch Professional Drilling System

Professional step drilling solution with advanced coating technology

Klein Tools delivers professional-grade drilling performance with this 12-step drill bit featuring 3/8-inch hex shank and aluminum titanium nitride coating. Designed for versatile applications on steel up to 16 gauge, wood, plastic, and aluminum, this high-speed steel bit provides precise hole sizing from 3/16-inch to 7/8-inch in 1/16-inch increments. The double straight flute design ensures clean cuts and efficient chip removal for professional results.

Professional Features & Benefits

  • Aluminum Titanium Nitride Coating: Provides 10 times more durability than steamed black oxide coating for extended bit life and consistent performance
  • 3/8-Inch Hex Shank: Delivers firm, positive grip that won't spin out in the drill for reliable operation and enhanced control
  • 12-Step Size Range: Covers 3/16-inch to 7/8-inch in precise 1/16-inch increments for versatile hole sizing applications
  • Double Straight Flute Design: Removes chips efficiently for clean cuts and smooth drilling operation across multiple materials
  • High Speed Steel Construction: Provides durability and cutting performance for professional drilling applications
  • Laser Markings: Easy-to-read size identification for quick selection and efficient workflow
  • Fast-Starting Non-Walking Tip: Ensures precise hole placement and reduces bit wandering for accurate drilling results

Technical Specifications

  • Coating: Aluminum Titanium Nitride (AlTiN)
  • Department: Electrical
  • Depth: 1.0000 in
  • Flute Type: Straight
  • Height: 1.0000 in
  • Increment: 1/16" (1.6 mm)
  • Material: High Speed Steel
  • Number Of Holes: 12
  • Overall Height: 3.2" (8.1 cm)
  • Overall Length: 0.88" (2.2 cm)
  • Overall Width: 0.88" (2.2 cm)
  • Product Details: Step Drill Bit
  • Product Group: Hand Tools
  • Product Size: 3/16" to 7/8" (4.8 to 22.2 mm)
  • Product Subgroup: Screwdrivers & Drivers
  • Product Type: Step Drill Bit
  • Quick Reference: #14
  • Shank Type: 3/8" Hex
  • Weight: 0.1500 lbs
  • Width: 1.0000 in

Installation & Operation

  1. Mount the bit securely in a compatible drill with 3/8-inch hex chuck or appropriate chuck adapter.
  2. Select appropriate drilling speed based on material type and thickness specifications.
  3. Position the bit at the desired drilling location and ensure proper alignment for accurate hole placement.
  4. Apply steady, controlled pressure while drilling to maintain clean cutting action and prevent overheating.
  5. Allow the double straight flutes to clear chips naturally during the drilling process for optimal performance.
  6. Complete drilling operation and inspect hole quality, ensuring proper size and clean edges.

Professional Applications

  • Electrical installations and panel modifications
  • HVAC ductwork and ventilation system installations
  • Metal fabrication and sheet metal work
  • Woodworking and cabinet installation projects
  • Plastic and composite material drilling
  • Maintenance and repair operations
  • Professional contractor and tradesman applications

Why Choose Klein Tools Quality?

Klein Tools delivers professional-grade drilling solutions with high-speed steel construction and advanced aluminum titanium nitride coating technology. The precision laser markings and 12-step sizing capability provide versatile performance for demanding professional applications, ensuring reliable results across steel, wood, plastic, and aluminum materials.

Manufacturer Resources

Spec Sheet

Product Specs

Coating:
Aluminum Titanium Nitride (AlTiN)
Flute Type:
Straight
Increment:
1/16" (1.6 mm)
Number Of Holes:
12
Overall Height:
3.2" (8.1 cm)
Overall Length:
0.88" (2.2 cm)
Overall Width:
0.88" (2.2 cm)
Quick Reference:
#14
Shank Type:
3/8" Hex
Department:
Electrical
Product Group:
Power Tools & Accessories
Product Subgroup:
Drill & Driver Bits
Product Type:
Step Drill Bit
Product Size:
3/16" to 7/8" (4.8 to 22.2 mm)
Product Details:
Step Drill Bit
Product Height:
1.0000 in
Product Material:
High Speed Steel
Product Weight:
0.1500 lbs
Product Width:
1.0000 in
Product Depth:
1.0000 in

Klein Tools KTSB14 – Frequently Asked Questions

1) What hole sizes does the Klein Tools KTSB14 step bit drill, and in what increments?
The KTSB14 cuts 12 hole sizes from 3/16 inch up to 7/8 inch (4.8 to 22.2 mm), stepping in 1/16 inch (1.6 mm) jumps. That covers common electrical knockout and conduit pilot work in one bit, and each step is laser marked so you can see the size you are on while drilling.
2) Will a 3/8-inch hex shank step bit fit my cordless drill or impact driver?
The KTSB14 has a 3/8 inch hex shank, so it drops straight into any three-jaw chuck of 3/8 inch capacity or larger and the hex flats keep it from spinning out under torque. It is not a 1/4 inch quick-change shank, so it will not seat in an impact driver's hex collet directly, you would need a chuck adapter for that.
3) How thick a steel panel can the Klein KTSB14 step bit cut?
Steel up to 16 gauge is the stated limit for this bit. That suits enclosure and panel sheet metal, duct, strut and junction box work. For heavier plate you want a twist bit or a hole saw instead, since a step bit's short step lands cannot clear a material thicker than the step height.
4) Is an AlTiN coated step bit worth it over a black oxide one?
The aluminum titanium nitride coating on the KTSB14 is stated to give 10 times the durability of steamed black oxide. The practical difference shows up in heat: AlTiN runs harder and cooler on stainless and repeated steel holes, where an uncoated or oxide high-speed-steel bit dulls on the cutting edge after a handful of enclosure holes.
5) Can I use this step bit on wood and plastic, or is it steel only?
Besides 16 gauge steel, the KTSB14 is rated for wood, plastic and aluminum. The double straight flute clears chips in all four, and the fast-starting tip keeps it from walking on a laminate or thin plastic face where a standard twist bit skates.
6) Should I use a step bit or a hole saw for drilling electrical enclosures?
For sheet metal up to 16 gauge, a step bit like the KTSB14 is the faster call: one bit covers 12 sizes from 3/16 to 7/8 inch, it deburrs as it steps, and there is no pilot drill or arbor to set up. Hole saws earn their place above 7/8 inch, in thicker plate, or in wood where you need a clean full-depth bore. Many electricians carry both and reach for the step bit for connector and device holes.
7) How long is the Klein KTSB14 step bit overall?
Overall height is 3.2 inches (8.1 cm) with a 0.88 inch (2.2 cm) body width, and it weighs 0.15 lbs. Short and light enough to work inside a panel or a tight stud bay without the drill body fouling, which is where a long hole saw arbor gets you.
8) What is the Klein part number for the 12-step 3/8-inch hex drill bit?
Order it as Klein Tools KTSB14. Klein also prints a quick reference of #14 on the bit itself, which is the number stamped on the step bit so crews can call it out from the truck stock.
9) Will this bit wander when I start a hole on a curved or painted surface?
The KTSB14 uses a fast-starting non-walking tip, so it bites without a center punch on flat sheet. On a curved duct or a round conduit body, still punch or dimple the spot first, any step bit will slide on a convex face.
How fast can I get the Klein Tools KTSB14 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Klein Tools KTSB14 come with a warranty?
Absolutely. The Klein Tools KTSB14 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Klein Tools KTSB14?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Klein Tools KTSB14 from ZenSupply?
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