{"id":1166,"date":"2025-11-11T10:40:23","date_gmt":"2025-11-11T10:40:23","guid":{"rendered":"https:\/\/hycuttingtools.com\/?post_type=product&p=1166"},"modified":"2026-08-31T13:03:23","modified_gmt":"2026-08-31T13:03:23","slug":"solid-carbide-straight-shank-step-drill","status":"publish","type":"product","link":"https:\/\/hycuttingtools.com\/fa\/product\/solid-carbide-straight-shank-step-drill\/","title":{"rendered":"Solid Carbide Straight Shank Step Drill for Precision Hole Drilling"},"content":{"rendered":"
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Carbide Straight Shank Step Drill<\/h2>\n

This solid carbide straight-shank step drill combines a smaller pilot or clearance diameter with a larger counterbore diameter on one rigid tool. It is designed for producing aligned two-level mounting holes in a single machining cycle, helping reduce tool changes and accumulated positioning error between the two diameters. Standard reference combinations cover M3 through M12, while non-standard pilot diameters, counterbore diameters, step depths, shoulder forms, lengths, coatings and shank sizes can be reviewed according to the component drawing and machining conditions.<\/p>\n

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Reference Sizes<\/span>
\nM3\u2013M12<\/span><\/div>\n
Cutting Form<\/span>
\nTwo Diameters<\/span><\/div>\n
Tool Material<\/span>
\nSolid Carbide<\/span><\/div>\n
Shank Type<\/span>
\nStraight Shank<\/span><\/div>\n<\/div>\n<\/section>\n

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Key Configuration<\/h3>\n
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1<\/span><\/p>\n

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Small Diameter d1<\/h4>\n

The smaller cutting section forms the lower pilot hole or fastener-clearance portion.<\/p>\n<\/div>\n<\/div>\n

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2<\/span><\/p>\n

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Large Diameter d2<\/h4>\n

The larger cutting section produces the upper counterbore or stepped recess during the same machining cycle.<\/p>\n<\/div>\n<\/div>\n

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3<\/span><\/p>\n

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Integrated Step Relationship<\/h4>\n

Both diameters and their axial relationship are ground on one carbide body to support aligned two-level hole machining.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n

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Key Product Advantages<\/h3>\n
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01<\/span><\/p>\n

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Two Hole Diameters in One Cycle<\/h4>\n

The smaller hole and larger recess can be produced without changing between separate drilling and counterboring tools.<\/p>\n<\/div>\n<\/div>\n

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02<\/span><\/p>\n

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Controlled Concentricity<\/h4>\n

Producing both diameters on one tool helps maintain their positional relationship and reduces accumulated setup error.<\/p>\n<\/div>\n<\/div>\n

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03<\/span><\/p>\n

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Rigid Solid-Carbide Body<\/h4>\n

Carbide stiffness supports stable step relationships when machine rigidity, clamping and holder runout are controlled.<\/p>\n<\/div>\n<\/div>\n

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04<\/span><\/p>\n

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Reduced Tool-Management Requirements<\/h4>\n

Combining multiple hole features can simplify CNC programs, tool magazines and repeat-production planning.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n

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Cutting Geometry & Tool Construction<\/h3>\n
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\"Step

Cutting-edge, helical-flute and straight-shank details<\/p>\n<\/div>\n

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\u2022 Two Cutting Sections<\/h4>\n

The small-diameter point begins the hole before the second cutting section enlarges the upper portion.<\/p>\n<\/div>\n

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\u2022 Continuous Helical Flutes<\/h4>\n

Flute space carries chips away from both cutting diameters during the drilling cycle.<\/p>\n<\/div>\n

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\u2022 Straight Shank Connection<\/h4>\n

The cylindrical shank provides a consistent clamping surface for compatible low-runout precision holders.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

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Product Video<\/h3>\n
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Solid Carbide Step Drill Cutting Geometry<\/p>\n<\/div>\n<\/div>\n<\/section>\n

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Solid Carbide & Coating Options<\/h3>\n
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\"Pair

Coated solid carbide straight-shank step drills<\/p>\n<\/div>\n

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\"Solid

Two-diameter precision-ground step geometry<\/p>\n<\/div>\n

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\"TiAlN

TiAlN-coated option for selected ferrous-material applications<\/p>\n<\/div>\n<\/div>\n

Coating Note:<\/strong> The final coating or uncoated cutting edge should be selected according to the workpiece material, hardness, coolant method and cutting conditions.<\/div>\n<\/section>\n

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Applications & Target Scope<\/h3>\n