Best Step Drill Bits for Stainless Steel Drilling (2026)
We evaluated step drill bits by material substrate (HSS vs M35 cobalt), coating (titanium or similar), step/flute design, shank compatibility, and verified user ratings to balance fit and value for stainless steel drilling
This roundup covers step drill bits suited for drilling stainless steel, focusing on fit for material, durability, and value across common workshop and industrial use. Selections emphasize cutting geometry, coating and substrate (HSS, M35 cobalt, TiN), and real-world user ratings to highlight options that balance life and cost
Top Picks
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1
ZELCAN Step Drill Bit Set 5pc with Titanium-coated HSS bits
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
TEMO 3pc M35 cobalt step drill set, 6/9/13 steps
TEMO 3pc M35 cobalt HSS step drill bit set with 6, 9, and 13 steps. Notable for durability and sharpness, cutting through stainless steel smoothly. Users note excellent quality and quick drilling in 30 seconds
- m35 cobalt steel construction
- three-step size set (6/9/13 steps)
- maintains sharpness after many holes
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3
Klein Tools Step Drill Bit 3/8 in Hex Shank, #3 1/4-3/4 in
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