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HSS step drill bits
specification
HSS step drill bits
step drill bit made of high speed steel for longer life
Drill point: 118 degree with step angle 90 degree / 180 degree step drill bit
The step drill bit is ideal for drill and countersink or counterbore in one operation, clearance fo the head and body of various types of screws
Drill bits manufacturer supply directly, offers competitive price with quick reponse and excellent service.
| Thread size | Overall length | Flute length |
| M3 | 93 | 57 |
| M4 | 117 | 75 |
| M5 | 133 | 87 |
| M6 | 143 | 94 |
| M8 | 169 | 114 |
| M10 | 198 | 135 |
| NO.4 | 3-3/4" | 2-1/2" |
| NO.5 | 3-7/8" | 2-5/8" |
| NO.6 | 4" | 2-3/4" |
| NO.8 | 4-1/4" | 2-15/16" |
| NO.10 | 4-3/4" | 3-7/16" |
| 1/2" | 5-1/4" | 3-7/8" |
| 5/16" | 6" | 4-1/2" |
| 3/8" | 7-1/8" | 5-3/16" |
| 7/16" | 7-5/8" | 5-5/8" |
| 1/2" | 5-1/8" | 3-1/4" |
xiexianfei@widetoptools.com
Cell: 18616927959
West Jinshajiang Rd 1555, Shanghai, China
