Compare step drill bits by the hole sizes your customers need and the thickness they drill. The diameter sequence and usable depth of each step matter more than the overall tool size.
A step drill bit carries successive cutting diameters on one tool. The AXIMET/TENYU catalogue lists HSS and HSS-Co materials with parallel, hex and flat-sided shank forms.
Sheet-metal tool distributors and importers planning drill-bit assortments.
Review the Selection Guide →Build a range around recurring hole patterns. Remove overlapping tools only after checking step increments and usable depth.
Compare the visible diameter sequence and flute arrangement; use the selected item’s dimensions to define the range.
The supplied image shows spiral flutes and hex shanks. Surface colour alone does not identify a coating or material grade.
Compare the tools individually within the shown assortment rather than inferring coverage from a case image.
Step drills combine several hole diameters in one tool, but each step has a limited cutting length. Select the diameter sequence, sheet thickness, shank, point and workpiece together. A diameter range is not a guarantee that every step can drill through the same thick workpiece.
| Selection detail | Why it matters |
|---|---|
| Diameter sequence | Check that the required finished hole is an actual step diameter. |
| Axial step length | The selected step must span the sheet thickness without entering the next diameter. |
| Edge condition | A damaged step affects its hole size and finish; preserve geometry during servicing. |
Do not substitute a conical outline for a controlled step-diameter list.
Send Step Range & Sheet ThicknessThe required hole may fall between the tool’s steps. Compare the complete sequence before treating two step drills as alternatives.
Record the individual finished diameters.
State material and actual thickness.
Compare sequence and usable step depths.
Identify shank shape and chuck capacity.
| Selection step | What to check |
|---|---|
| List the holes | Record the individual finished diameters. |
| Describe the sheet | State material and actual thickness. |
| Read the step chart | Compare sequence and usable step depths. |
| Check the holder | Identify shank shape and chuck capacity. |
Send required diameters, sheet material/thickness, step depths, shank, selected material and quantities.
Send Step Range & Sheet Thickness →Required steps and increments. Record this information separately for each purchasing line.
Record usable step depth beside the diameter sequence. A shared endpoint does not prove two tools will make the same hole in the same sheet.
Keep flute and shank descriptions separate from material and coating. Visible colour cannot establish either specification.
Record the tool list in the proposed case. A pictured assortment does not establish a standard pack quantity or stock programme.
The next shoulder must not start enlarging the entry while the required diameter is still passing through the workpiece.
Specify the hole sequence and sheet thickness.
Keep the holder, clearance and material details with the tool request.
Separate tools with different step sequences even when the final diameter is equal.
Two tools can share a maximum diameter while providing different intermediate sizes. Keep the full sequence on the purchase specification.
| Product distinction | Buying implication |
|---|---|
| Step range and maximum diameter | Coverage depends on the complete diameter sequence. |
| Step depth and total length | Usable cutting depth is not the overall tool length. |
| Shank shape and size | Both must match the holder specification. |
The catalogue material options do not identify every photographed tool. Request the selected item’s material and finish description.
Send the proposed step drill bits shortlist with its intended applications.
Compare for My Program →Build a step-drill assortment around holes that customers need to make and holders they already use.
Retain the selected item’s diameter chart and material record with the approved sample.
Request the construction record for the selected step drill bits item.
Request Factory Information →Check a sample’s step diameters, usable depths and shank against the item drawing. A colour finish is not evidence of a specified coating.
Compare the delivered diameter progression with the ordered sequence, including any intermediate holes needed in production.
Inspect the step edges and flute path for visible chips or handling damage.
Check the usable depth at each required step against the workpiece specification before accepting the range.
Verify the received shank dimensions and contact surfaces against the approved chuck requirement.
Include the inspection requirements for your step drill bits order.
Send Step Range & Sheet Thickness →For an OEM or ODM enquiry, attach the required step sequence and shank drawing. Describe any marking requirement separately from the cutting geometry.
Provide quantities by step range and the required pack identification. Do not combine different sequences under one catalogue code.
No. The axial length of the selected step limits the cylindrical hole portion. Confirm sheet thickness and the exact step geometry.
The next step can enter before the intended cylindrical step spans the sheet. Compare axial step length with thickness.
Do not substitute a conical outline for a controlled step-diameter list.
Send Step Range & Sheet Thickness →Compare diameter sequence with the purchasing requirement: Required steps and increments.
01 · ORDER RECORDDiameter sequence
Required steps and increments
02 · ORDER RECORDUsable step depth
Depth needed at the selected cutting diameter
03 · ORDER RECORDMaterial
Selected HSS or HSS-Co item specification
The project catalogue lists HSS and HSS-Co step drill bits.
No. Compare all required intermediate diameters and the usable depth of the relevant steps.
No. Use the selected item’s stated finish, not colour alone.
The usable depth of the required step and the tool’s application instructions.
List the step sequences, shank forms, selected materials and quantities for each tool.
Send your hole-size list and sheet thickness for a step drill bit quotation.