HRC 61 Conical 8mm Roll Forged Black HSS Drill Bits
8mm Hss4241 Roll Forged Black Carbon Steel Drill Bit
Description:
Manufactured from Hss4241 steel, with molybdenum and cobalt added to creates a hardened alloy, measuring Rockwell hardness up to 67 with 5% Cobalt, for much faster cutting and extra longer life span, with up to twelve times when compared with an average HSS drill bit. No center punch is needed—the 135° Quick-Cut points are self-centering and penetrate quickly with less pressure. Will not "walk" or "wander" Extremely heat resistant; must be used and operated at 1500 RPM or greater for maximum efficiency. Straight shank allows for firmly holding and accurate centering,
Hss cobalt drill bits Application
fit for standard drill chucks and regular round collet chucks Manufactured with all kinds of drill bit for metal,
such as HSS Twist Drill, HSS Center Drill Bit, HSS Step Drill Bits, Reduced Shank Drill Bit, Taper Shank Drill Bits, and etc.
Made into HSS Twist Drill Bits; HSS Step Drill Bit; Taper Shank Drill Bits; Reduced Shank Drill Bits; Bi-metal Hole Saw
Detail:
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Item Name: 8mm Hss4241 Roll Forged Black Carbon Steel Drill Bit |
|
| Material | Hss4241 |
| Shank | Hex Shank |
| Process | Roll Forged |
| Surface finished |
Black |
| Hardness | 65-67 HRC |
| Color | |
| Size | 8.0mm |
|
Flute Type
|
|
| Total Length |
125mm
|
| Flute Length |
81mm
|
| Usage | Metal drilling, Stainless steel, carbon steel |
| Customize | Accepted |
Hss4241 Drill bits Size List :
| M1.6x0.35 | 6h | 40 | 8 | 1 |
| M1.7x0.3 5 | 6h | 40 | 8 | 2 |
| M1.8x0.35 | 6h | 40 | 8 | 3 |
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