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- Contact Person : Mr. Chen Tom
- Company Name : Zhenjiang Huaxing Tools Co., Ltd.
- Tel : 0086-511-84480898
- Fax : 0086-511-84480900
- Address : Jiangsu,Zhenjiang,Tuanjie Village,Baoyan Town
- Country/Region : China
- Zip : 212125
Black Oxide step drill
Product Detailed
Related Categories:Drill Bit
1.Ensure materials are authentic
2.Strict production process and testing process
3. long lasting,fasting drilling
1. meterial: HSS M2
2. thermal treatment: bit part 62-65HRC
bit shank 40-50HRC
3. surface treatmen: Black Oxide
(The surface of the drill bit without tipping blunt crack significant bump and grinding burn and influence the use performance defect,Product no surface rupture, burr, rust, black spots or other undesirable phenomenon)
4. shank: three flats shank (CNC milling machine control, handle uniformity division.)
5. groove type: straight flute
| min-max | steps | description | overl length | shank | max thickness |
| 1/4"-3/4" | 9 | 1/4"-5/16"-3/8"-7/16"-1/2-"9/16"-5/8"-11/16"-3/4" | 2.3inch | 0.3inch | 0.15inch |
Black Oxide step drill
