Best Step Drill Bits for Stainless Steel Drilling (2026)
We prioritized substrate (M35/M2 HSS), coating, flute/step geometry, shank type, and overall value to identify options suited for stainless steel drilling
The Verdict
- Best Overall: ZELCAN Step Drill Bit Set 5pc with Titanium-coated HSS bits — Best for balanced value: titanium-coated HSS set that pairs coating benefits with affordable multi-bit versatility
- Best Value: TEMO M35 cobalt spiral flute step drill with 12 sizes — Best for heat resistance: M35 cobalt spiral-flute step offers harder substrate and improved performance on stainless
Top Picks
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1
Best Overall ZELCAN Step Drill Bit Set 5pc with Titanium-coated HSS bits
Best for balanced value: titanium-coated HSS set that pairs coating benefits with affordable multi-bit versatility
Step drill bit set with four-cutting blades for metal, aluminum, and more. Noted for quick, smooth drilling and case quality; mixed durability and sharpness feedback from customers
- four spiral flute design
- multi-material compatibility
- titanium-coated HSS bits
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2
Best Value TEMO M35 cobalt spiral flute step drill with 12 sizes
Best for heat resistance: M35 cobalt spiral-flute step offers harder substrate and improved performance on stainless
TEMO M35 cobalt step drill with titanium coating covers 12 hole sizes from 3/16" to 7/8" and a 1/4" hex shank. Durable, sharp cutting suited for steel; customers note quick work and good value
- 12 hole sizes
- M35 cobalt with titanium coating
- 1/4" hex shank
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3
Step Drill Bit Set 1/4" to 1-3/8", HSS M2 straight grooved double fluted
Best for chip control: M2 HSS double-fluted straight-groove set designed for cleaner cuts through thin stainless
Step drill bit set in 1/4" to 1-3/8" range. High speed steel with straight grooved double flutes for cleaner holes across metal and wood. Customers note efficient drilling and visible target hole sizes during operation
- M2 HSS with vacuum heat treatment
- non-stop size visibility during drilling
- wide material compatibility
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4
Klein Tools Step Drill Bit 3/8 in Hex Shank, #3 1/4-3/4 in
Best for quick swaps: hex-shank double-fluted design for reliable grip and smooth step drilling in metalwork
Step drill bit with double flutes and aluminum-titanium nitride coating for durable, clean cuts. Features a hex shank for secure grip; preset sizes aid quick drilling
- durable coating for extended life
- secure hex shank
- clear size gauge markings
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5
Klein Tools KTSB14 Step Drill Bit 14, 3/16 to 7/8 in w/ hex shank
Best for stepped coverage: 14-step, double-fluted bit with hex shank that gives many hole-size options in sheet metal
Klein Tools KTSB14 step drill bit with double flutes and aluminum-titanium nitride coating for durability. Designed for clean cuts and secure grip with a 3/8-inch hex shank. Customers cite quality and preset sizes, with mixed durability and sharpness feedback
- aluminum-titanium nitride coating
- double-fluted for chip removal
- 3/8-inch hex shank for secure grip