Widetop > Step Drill Bits

HSS double flute step dril bits

  1. The CBN ground step drill bitsguarantee quiet running and high cuttting performance

  2. Double flutes eliminate chatter and vibration when cutting through workpiece

  3. Resharpenable cutting edge provides longer tool life
Step drill bits dimension, Special sizes available on request
Size Overall length Steps Shank Dia
1/8"-1/2" 3-1/8" 13 1/4"
1/4"-3/4" 2-3/4" 9 3/8"
3/16"-1/2" 3-1/8" 6 1/4"
3/16"-7/8 3-1/4" 12 3/8"
9/16"-1" 3-1/4" 8 3/8"
7/8"-1 3/8" 3-1/4" 5 3/8"

HSS double flute step dril bits inch size

  1. The CBN ground step drill bitsguarantee quiet running and high cuttting performance

  2. Double flutes eliminate chatter and vibration when cutting through workpiece

  3. Resharpenable cutting edge provides longer tool life
Step drill bits dimension, Special sizes available on request
Size Overall length Steps Shank Dia
1/8"-1/2" 3-1/8" 13 1/4"
1/4"-3/4" 2-3/4" 9 3/8"
3/16"-1/2" 3-1/8" 6 1/4"
3/16"-7/8 3-1/4" 12 3/8"
9/16"-1" 3-1/4" 8 3/8"
7/8"-1 3/8" 3-1/4" 5 3/8"

Japanese type step drill bit

  1. Double R groove Hex shank, one for JIS standard, one for ANSI standard

  2. The CBN ground step drill bitsguarantee quiet running and high cuttting performance

  3. Double flutes eliminate chatter and vibration when cutting through workpiece

  4. Resharpenable cutting edge provides longer tool life
Step drill bits dimension, Special sizes available on request
Size Overall length Steps Shank Dia
3mm-12mm 81mm 9 1/4 Hex
4mm-12mm 81mm 9 1/4 Hex
6mm-18mm 71mm 10 1/4 Hex
4mm-20mm 82mm 9 1/4 Hex
4mm-22mm 86mm 10 1/4 Hex
6mm-24mm 86mm 13 1/4 Hex
3mm-13mm 70mm 11 1/4 Hex
6mm-25mm 82mm 7 1/4 Hex
6mm-35mm 102mm 13 1/4 Hex

3 cutting edges step drill bit

  1. The deep ground flutes of step drill bits with 3 cutting edges guarentee absolutely chatter-free working. The reduced load of the cutting edges allows a higher feed rate especially for soft materials like non-ferrous metals.

  2. The CBN ground step drill bitsguarantee quiet running and high cuttting performance

  3. The chamfer on the base of the cone makes withdrawal of the tool from the material simple when through hole drilling

  4. Resharpenable cutting edge provides longer tool life
Step drill bits dimension, Special sizes available on request
Size Overall length Steps Shank Dia
1/8"-1/2" 3-1/8" 13 1/4"
1/4"-3/4" 2-3/4" 9 3/8"
3/16"-1/2" 3-1/8" 6 1/4"
3/16"-7/8 3-1/4" 12 3/8"
9/16"-1" 3-1/4" 8 3/8"
7/8"-1 3/8" 3-1/4" 5 3/8"
Step drill bits dimension, Special sizes available on request
Size Overall length Steps Shank Dia
4mm-12mm 65mm 9 6mm
4mm-20mm 75mm 9 8mm
4mm-30mm 100mm 14 10mm
4mm-32mm 104mm 15 10mm
4mm-39mm 107mm 13 10mm
5mm-35mm 78mm 13 13mm
6mm-37mm 100mm 12 12mm
6mm-38mm 100mm 12 12mm
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  • Fax: 0086-21-6910 6250
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