Product description： 1.The primary purpose of a spot drill to make a "dimple" in the workpiece so that the twist drill does not deflect and "walk" off-center and the hole is drilled in the correct location.
| Product Description |
| Product Name | HSS NC Centering Spot Drill Bit for Center Drilling |
| Material | High Speed Steel ( Tungsten Carbide, M35 -Cobalt are Available) |
| Process | Fully Ground |
| Cutting Angle |
90 Degree ( 120 Degree,60 Degree are Available) |
| Surface | White(TiAlN Coated ,Tin-Coated,Amber are Available) |
| Size | 1/8-3/4inch (2-20MM is Available) |
| Package | Plastic Tube,Blister Card,Plastic Box are Available |
| Features |
1.The primary purpose of a spot drill to make a "dimple" in the workpiece so that the twist drill does not deflect and "walk" off-center and the hole is drilled in the correct location. 2.The Spot drill suitable for continuous production on aluminium, plastics, free cutting steels, cast iron, titanium, non-ferrous materials and some aerospace materials. 3.Drill bits are made from a high speed cobalt blend that makes it a great option for drilling into harder steel materials 4.Precise position and chamfer are accomplished at one time to improve machining quality. 5.Available in 60/90/120 and 140 degrees, coated in AlTiN or left uncoated. |
| Product Sizes |
| D1 | D | L1 |
| inch | inch | inch |
| 1/8 | 1/8 | 1/4 |
| 3/16 | 3/16 | 3/8 |
| 1/4 | 1/4 | 3/8 |
| 3/8 | 3/8 | 1/2 |
| 1/2 | 1/2 | 3/4 |
| 5/8 | 5/8 | 1 |
| 3/4 | 3/4 | 1 |
* Other Sizes are available,Concact Us to Learn More.
| Product Packages |
Contact: David Yu
Phone: +86-139-52828006
Tel: +86-139-52828006
Add: Houxiang, Danbei Town, Danyang City, Jiangsu, China, 212300
