1300 601 514
Step Drill HSS Co-M35 Cobalt

$14.98$999.98 Includes GST

4-12mm M35 Step Drill
4-12mm M35 Step Drill
4-12mm M35 Step Drill

Step Drill HSS Co-M35 Cobalt

$14.98$999.98 Includes GST

Easy to use 1/4″ hexagonal shank 4mm-12mm HSS Co-M35 Cobalt coated Step Cone Drill Bit for cutting into wood or metal thin plate or hollow section (up to 5mm thick).  Suits G316 Stainless Steel

SKU: 19537 Categories: , , ,

Step Drill HSS Co-M35 Cobalt

These are brand new easy to use 1/4″ hexagonal shank Step Drill HSS Co-M35 Cobalt Drill Bit for cutting into wood or metal thin plate or hollow section – up to 5mm thick . This Bit offers a SUBSTANTIAL increase in the wear resistance and oxidation aspect over the more common and cheaper HSS4241 and HSS6542 bits.

Each tool produces a clean chamfered hole in the material. Can be used on plate, bar, tube, or box section. Cutting fluid or drill lubricant is recommended (the type of fluid depends on the material being machined). As with all machining, it is best to go slow, keep the tool cool, and use LOTS of lubricant. They are industry fabrication quality and IMHO – one of the best hand tools around.


Choose a clean dry surface and mark your intended spot. We recommend that you center punch the material to prevent ‘wandering’. Apply lubricant, and with your step drill located in your variable speed reversing drill – simply drill and tap your hole.

Also, failure to use lubricant and or drilling fast can radically reduce the life of the tool as a dull or burnt tip on the drill tap pretty much destroys the tool.. Injecting cold water while working, can effectively extend the service life of the drill bit.

Bit is sutable for Aluminium, Hardy Board, PVC, Nylon, Mild Steel, Carbon Steel, Stainless Steel (304 and 316)

Features & Benefits:

  • High Speed Steel – HSS
  • Co-M35 Cobalt bit exceeds HSS4241 and HSS6542 Specifications
  • Fast Triple Spiral Groove Design for Great Chip Removal
  • Drilling multiple sized holes in one step for reduced processing steps,
  • CNC formed with CBN Grinding Wheel for higher accuracy sizing
  • 118 degrees self centering point
  • Wide angle of entry with very low point slippage.
  • Self Deburring grooves
  • Hardness HRC89
  • Steps:  4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm
  • Surface Treatment: Cobalt.
  • Material: HSS-Co M35 Cobalt
  • Shank: 1/4″ (6.35mm) Double R hex shank
  • Length:  ~80mm


  • 1 – 4m-12mm HSS Co-M35 Step Cone Drill Bit with 1/4″ Hex Shank

Additional Information

Weight 0.05 kg





Co-M35 Cobalt

Power Source


Size - Pack

Single, 2 Pack, 5 Pack, 10 Pack, 100 Pack

Save your Quote
Your Quote will be saved for 30 days and you'll be given a link. Anyone with the link, can use it to retrieve your Quote within that 30 days
Back Save your Quote
Your Shopping Cart will be saved as a Quote with Product pictures and information, and Cart Totals. You can then send it to yourself, or a friend, with a link to retrieve it at any time. Thanks for Looking! ...the LCW Team
Your cart email sent successfully :)