JOHNSON ELEKTRIK HSS STEP DRILL BIT JI-SSHS-106
Regular price
₱1,765.00
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A High-Speed Steel (HSS) step drill bit is a conical cutting tool featuring a series of progressively larger diameters (steps) on a single bit, allowing you to drill or enlarge multiple hole sizes without changing tools. These bits are primarily used for drilling thin materials like sheet metal, plastics, and wood.
RS Philippines +3
RS Philippines +3
Key Benefits
- Efficiency: Replaces the need for multiple individual drill bits, saving time during tool changes.
- Precision and Control: Most feature a split-point tip to prevent "walking" (slipping) and allow for self-centering.
- Multi-functional: Capable of drilling, reaming, and deburring (smoothing edges) in a single pass.
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Heat Resistance: HSS can withstand the high temperatures generated during high-speed metal drilling without losing its hardness.
GWS Tool Group +6
Common Variations and Coatings
HSS step bits are often enhanced with specialized treatments to improve performance:
- Titanium Nitride (TiN): These "golden" bits have increased surface hardness and reduced friction, extending tool life.
- Black Oxide: Offers improved wear resistance and corrosion protection, typically labeled as HSSR.
- Cobalt (HSS-Co/M35): While a subset of HSS, these contain 5–8% cobalt for superior heat resistance, making them ideal for tougher metals like stainless stee