Custom Step Drill Bits Supplier
We are a professional custom step drill bits supplier.
If you need step drill bits in special sizes, shapes, or packaging, we can help.
We offer OEM and ODM services for tool brands, wholesalers, and importers.
What Are Step Drill Bits?
Step drill bits are cone-shaped drill tools designed for drilling multiple hole sizes with one bit.
They're widely used in:
Electrical work (e.g., drilling control panels, switchboards)
HVAC installation
Metal fabrication
DIY and construction
Each "step" on the bit represents a different diameter, so users can enlarge holes gradually without switching tools.
They're ideal for thin materials like sheet metal, aluminum, plastic, and wood.
Key Features of Our Step Drill Bits
Material Options:
HSS (High Speed Steel) – for general use
HSS-Co (M35) – for stainless steel and harder metals
Surface Coating:
Titanium Nitride (TiN) – heat resistance & longer life
Black Oxide – corrosion resistance
Uncoated – for cost-effective solutions
Flute Design:
Spiral flute – smoother cutting, faster chip removal
Straight flute – better for thin sheet drilling
Shank Types:
Round, Hex, 3-Flat, SDS – compatible with most drills
Common Sizes:
4–12mm (3 steps), 4–20mm (9 steps), 4–32mm (15 steps)
Custom step ranges also available
Custom Options Available
We support full customization:
Custom step sizes & diameters
Unique flute types or shank designs
Private logo laser marking
OEM packaging (color box, blister, plastic case, etc.)
Retail-ready barcode labeling
Just send your drawing, size list, or sample — we'll handle the rest.
Why Choose Us as Your Step Drill Bit Supplier
✅ 10+ years manufacturing experience
✅ Low MOQ for custom orders
✅ Stable lead time & strict QC
✅ Export to 30+ countries
✅ Trusted by tool brands & industrial clients
✅ Flexible OEM & branding support
Request a Quote Today
Tell us your step drill bit specs, and we'll send a fast quote.
We can also provide free samples (for qualified inquiries).
Contact us now to start your custom step drill bit project.
