Milwaukee M. Drill Hss-Co 19 Piece Set CB (4932499764)

Description

Genuine Milwaukee · Part no. 4932499764

A 19-piece set of Milwaukee HSS-Co metal drill bits, ground from 5% cobalt high speed steel to DIN 338, in a bronze finish. Cobalt keeps its edge when hot, so this is the set for stainless steel and steels over 1000 N/mm²: stainless exhaust brackets, hardened bolts and tough alloy parts on a car or trailer.

Good to know

• Can I drill out a snapped bolt with it? Cobalt is the right material for drilling into a hardened bolt; centre punch the middle, start small and step up, and keep the speed low with plenty of cutting oil.
• Why does stainless need a cobalt bit? Stainless hardens if the bit rubs instead of cutting, so a sharp, heat-resistant bit with firm pressure and a slow speed gets through where ordinary bits glaze over.
• Will the bits slip in my chuck? Sizes from 5mm have a three-flat shank, which grips better in a keyless chuck and stops the bit spinning under load.

Which one?

For more sizes, the bigger M. Drill Hss-Co 25 Piece Set CB (4932499765); for general mild steel drilling, the M. Drill HSS-G TW 19 Piece Set CB (4932499766).

Key features

• 19 cobalt HSS drill bits to DIN 338
• 5% cobalt for heat resistance
• QUAD EDGE tip with 135° split point
• Three-flat shank from 5mm
• Tapered web for strength

Specification