Double Ended HSS Drill Bits For Metal , High Speed Steel Drill Bits Metric Size
Double Ended HSS Drill Bits For Metal , High Speed Steel Drill Bits Metric Size
Material: High speed steel 4241, 4341, M2, M35,M42
Use: Metal Drilling
Surface treatment: Bright surface is the standard treatment, titanium coating, black oxide, amber finished each is available
Process: fully ground
Double end HSS drill bits features:
Double end drill bits have flutes and cutting points on both ends. Allows the user with the ability to reverse the drill and utilize both ends.
135 split point starts drilling on place firmly.
Two times life time compared with a single end drill bit.
The double end drill bits are used primarily in small machine shops and automatic body shops for drilling holes for sheet metal screws or rivets.
Drilling thin sheet metals, steel sheet, sheet brass, sheet aluminum and plastic sheets.
Sizes:
Size:mm | working length | overall length | Size:inch | working length | overall length |
3 | 11 | 46 | 1/8 | 1/2 | 1-13/16 |
3.2 | 11 | 49 | 9/64 | 5/8 | 2-1/16 |
3.5 | 14 | 52 | 5/32 | 5/8 | 2-3/16 |
4 | 14 | 55 | 3/16 | 5/8 | 2-5/16 |
4.5 | 17 | 58 | 7/32 | 3/4 | 2-5/8 |
5 | 17 | 62 | 1/4 | 3/4 | 2-7/8 |
5.5 | 19 | 66 | |||
6 | 19 | 66 | |||
6.5 | 22 | 70 |