Related posts

Feature

Step drill Shank diameter: 10mm(0.39'') for 4-32; 8mm(0.31'') for 4-20; 6mm(1/4'') for 4-12
Hole Cutter step included: 4-12/20/32mm
Feature and Material: HSS6542 Metric Spiral Flute Step Drill Bits,
You can use water to cooling it when it is work and it can be used for even longer
Suit for use in hardness under 28 artifacts,(such as stainless steel , steel, wood)The plate thickness under 5 mm

Description

You can use one drill for diferent aperture
No need of center punch.Compared with the ordinary twist drill,it is not easy to break and it can be used for deburring, chamfering and open hole
Recommend the drilling speed of 250--400 rpm
Spiral Flute design, better for faster drilling, prevent slippage when in chuck

Specifications:

Material:HSS6542
Shank Type:Triangle shank
Type:Spiral groove
Size:
003: 4mm to 12mm 9 Steps ( 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm ) shank diameter 6mm
002:4mm to 20mm 9 Steps (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm,18mm,20mm) shank diameter 8mm
001:4mm to 32mm 15Steps (4mm,6mm,8mm,10mm,12mm,14mm,16mm,18mm,20mm,22mm,24mm,26mm,28mm,30mm,32mm)

M35 / HSS-CO suitable for drilling thin metal (stainless steel, steel, sheet metal, carbon steel, aluminum, iron, limited thickness below 5mm!)
Hss4241 Suitable for use in the hardness of 25 below the workpiece, such as iron, aluminum, PV board, insulation board
Hss 6542 / M2 (suitable for use in the hardness of 28 below the workpiece, such as steel, sheet metal, copper, the thickness of 5MM in the following metal)

Package Included:
3 pcs HSS6542 Spiral groove Step Drill