DIN338 Jobber Length left-hand cutting HSS twist drill bits
| 1.Size range: 0.2-20mm | |||
| 2.Surface finishing: Black,Black&white,Rainbow,Titanium coated | |||
| *Surface finishing will highly improve the drill bit’s life span. | |||
| 3.Left-hand cutting,type N | |||
| 4.Material we use for roll forged drill bit:HSS 4241,HSS 4341,HSS 6542 | |||
| 5.Cylindrical shank,118°or 135° split point conical section. | |||
| 6.Diameter tolerance h8 | |||
| 7.In all rotary and percussion drilling machines, for drilling in steel, sintered metal, non-ferrous metal and plastics |
Manufacturing Standard: DIN338(jobber series), DIN1897(stub series), DIN340(long series), DIN1869, DIN341, DIN345, DIN1870.
| Drill Diameter | Flute Length | Overall Length |
| (mm) | (mm) | (mm) |
| 1 | 12 | 34 |
| 1.5 | 18 | 40 |
| 2 | 24 | 49 |
| 2.5 | 30 | 57 |
| 3 | 33 | 61 |
| 3.2 | 36 | 65 |
| 3.5 | 39 | 65 |
| 4 | 43 | 70 |
| 4.2 | 43 | 75 |
| 4.5 | 47 | 75 |
| 5 | 52 | 86 |
| 5.2 | 52 | 86 |
| 5.5 | 57 | 86 |
| 6 | 57 | 93 |
| 6.5 | 63 | 93 |
| 7 | 69 | 101 |
| 7.5 | 69 | 109 |
| 8 | 75 | 117 |
| 8.5 | 75 | 117 |
| 9 | 81 | 125 |
| 9.5 | 81 | 125 |
| 10 | 87 | 133 |
| 10.5 | 87 | 133 |
| 11 | 94 | 142 |
| 11.5 | 94 | 142 |
| 12 | 101 | 151 |
| 12.5 | 101 | 151 |
| 13 | 101 | 151 |
Target market:Roll forging is cost-effective for DIY market users!!