Design - The hexagonal shank titanium drill has a double-edged design for smoother cutting. Coated by titanium,this step drill set performs well in heat,corrosion and rust resistance,Perfect Step Drill Bits suitable for drill holes in various material: within 3mm/0.12 inch (Iron Plate, Copper Plate, Aluminum Plate); within 5mm/0.2 inch (Wood, PVC sheet, Insulation Boards). Not suitable for hard and brittle materials such as stainless steel, glass, tile floors, walls etc
Multiple Specifications - Titanium Coated Step Drill Bit Set has 24 different hole diameters. They can machine holes of different diameters to suit your needs
Durability-The step drill bit is made of titanium coating, which is more durable, can extend the service life and has better surface anti-corrosion performance.
Accuracy - The angle of the bifurcated tip is 118 degrees, making drilling operations more convenient and efficient.
Benefits - Automatic, high-impact, spring-loaded impact when pressing the surface, adjustable cap to adjust the impact force.
Product Name | Straight Flute Size HSS Step Drill Bit |
Material | HSS 4241/6542/M35 |
Shank | Round /Three flats/Quick change Hex/Double R shank |
Size | 4-12mm 4-20mm 4-32mm 3/16”-1/2”, 1/8”-1/2”, 1/4"-3/4” |
Number or steps | 5steps ,9steps .15steps |
Surface Finish | Tin-coated/Bright |
Payment Terms | T/T, L/C |
split point: | 118°and 135° tip both available |
Suitable | Stainless steel, plain carbon steel,aluminium and plastics,Iron plate. |
Material |
Suitable For Drill Holes |
||||||||
Stainless Steel |
Cast Plain |
Plain Carbon Steel |
Bronze |
Brass |
Copper |
Aluminium |
Plastics |
glass, tile floors, wall |
|
HSS4241 |
× |
√ |
× |
√ |
√ |
√ |
not good |
√ |
× |
HSS6542/M2 |
not good |
√ |
√ |
√ |
√ |
√ |
√ |
√ |
× |
HSS Co/M35 |
√ |
√ |
√ |
√ |
√ |
√ |
√ |
√ |
× |
NOTE:HSS-Co step drill bits for stainless steel <1mm can use hand power tools.but within 2-3mm please use bench drill.
Use the correct drill speed to ensure the ideal drill bit performance in the material being drilled.
Drill Size |
|||||||||||||
|
1MM |
2MM |
3MM |
4MM |
5MM |
6MM |
7MM |
8MM |
9MM |
10MM |
11MM |
12MM |
13MM |
STAINLESS STEEL |
3182 |
1591 |
1061 |
795 |
636 |
530 |
455 |
398 |
354 |
318 |
289 |
265 |
245 |
CAST IRON |
4773 |
2386 |
1591 |
1193 |
955 |
795 |
682 |
597 |
530 |
477 |
434 |
398 |
367 |
PLAIN CARBON STEEL |
6364 |
3182 |
2121 |
1591 |
1273 |
1061 |
909 |
795 |
707 |
636 |
579 |
530 |
490 |
BRONZE |
7955 |
3977 |
2652 |
1989 |
1591 |
1326 |
1136 |
994 |
884 |
795 |
723 |
663 |
612 |
BRASS |
9545 |
4773 |
3182 |
2386 |
1909 |
1591 |
1364 |
1193 |
1061 |
955 |
868 |
795 |
734 |
COPPER |
11136 |
5568 |
3712 |
2784 |
2227 |
1856 |
1591 |
1392 |
1237 |
1114 |
1012 |
928 |
857 |
ALUMINIUM |
12727 |
6364 |
4242 |
3182 |
2545 |
2121 |
1818 |
1591 |
1414 |
1273 |
1157 |
1061 |
979 |
NOTE: The faster the speed, the smaller the rotational requirement.
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