HSS Step Drill Spiral Flute Tin-coated
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HSS Step Drill Spiral Flute Tin-coated

1, HSS M2 material fully ground for precision drilling performance.
2, One piece realize various diamter drilling work purposes on highest efficiency.
3, Tri-flat shank to increase that torque making drilling work more stable.
4, Durable drilling with professional premium performance.
5, Precision drilling in cable ducts and for switch cabinets.
6, Max. cutting depth of each diameter up to 5mm.

  • 928 Series
  • HTT, OEM job
  • MPP+ 
  • To drill holes in various steel, metal, iron, alloyed metal, unalloyed metal, non-ferrous metal, etc.
  • 928
  • 4mm to 60mm
  • Tri-flat
  • Metal work 
Quantity:

Size table:

Item NumberDiameter CombinationStep QTY. Overall Length(mm)Shank Diameter(mm)
928.12304120514,6,8,10,1256510
928.12304120914,5,6,7,8,9,10,11,1296510
928.12304200914,6,8,10,12,14,16,18,2097510
928.12304221014,6,8,10,12,14,16,18,20,22108010
928.12304301414,6,8,10,12,14,16,18,20,22,24,26,28,301410013
928.12304321514,6,8,10,12,14,16,18,20,22,24,26,28,30,321510513
928.12304391414,6,8,10,12,15,18,21,24,27,30,33,36,391410713
928.12305351315,7.5,10,13,16,19,21,23,26,29,31,33,351310013
928.12305381415,7.5,10,13,16,19,21,23,26,29,31,33,35,38149513
928.12306180716,8,10,12,14,16,1876710
928.12306200816,8,10,12,14,16,18,2087110
928.12306241016,8,10,12,14,16,18,20,22,24108010
928.12306250716,9,12,16,20,22.5,2576512
928.12306301316,8,10,12,14,16,18,20,22,24,26,28,30139813
928.12306301016,9,12.7,15.2,18.6,20.4,22.5,25.5,28.3,30.51010013
928.12306320816,10,14,18,22,26,29,3287513
928.12306320916,9,12,16,20,22.5,25,28.5,3297613
928.12306371216,9,12.5,15.2,18.6,20.4,22.5,26,28.3,30.5,34,371210013
928.12306381216,9,13,16,19,21,23,26,29,32,35,381210013
928.12306401616,11,17,23,29,30,31,32,33,34,35,36,37,38,39,401610513
928.12309361019,12,15,18,21,24,27,30,33,36108613
928.123102011110,11,12,13,14,15,16,17,18,19,20118810
928.123122009112,13,14,15,16,17,18,19,2097610
928.123133810113,16,19,21,23,26,29,32,35,381011213
928.123142406114,16,18,20,22,2466713
928.123142507114,16,18,20,22,24,2577113
928.123203011120,21,22,23,24,25,26,27,28,29,30118813
928.123203408120,22,24,26,28,30,32,3487513
928.123304011130,31,32,33,34,35,36,37,38,39,40119813
928.123405011140,41,42,43,44,45,46,47,48,49,501110713
928.1235060111

50,51,52,53,54,55,56,57,58,59,60

1112013

*The other size combinations can be upon customers' special requests. 

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