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| Customization: | Available |
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| Customized: | Customized |
| Standard: | DIN |
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OUR FACTORY
1) We're a direct manufacturer and 100% export worldwide (USA, Israel, Jordan, Iran, Thailand, Duabai, South Africa, Kenya, Egypt, Australia, UK, Spain, Brazil, etc)
2) We have around 15 years of producing experience.
3) Our drill product: HSS drill bits, masonry drill, SDS drill, glass & tile drill, step drill, wood flat drill, wood auger bit, wood brad drill, center drill, left hand drill, drill set etc.4) Above 95% customers will place a formal order after testing the samples.
A countersink is a conical hole cut into a manufactured object, or the cutter used to cut such a hole.
A common use is to allow the head of a countersunk bolt or screw, when placed in the hole, to sit flush with or below the surface of the surrounding material (by comparison, a counterbore makes a flat-bottomed hole that might be used with a socket-head cap screw).
A countersink may also be used to remove the burr left from a drilling or tapping operation thereby improving the finish of the product and removing any hazardous sharp edges.
| Product | Countersink,Countersink Drill Bit |
| Material | HSS,HSS Al,Carbide etc. |
| Size | 6mm-60mm,or can be customized |
| Degree | 60°, 90°,120° |
| Process | Fully ground |
| Flutes | 1,3,4,6 |
| Shank | Straight,Tapered |
| Surface color | Bright finish, black oxide, tin-coated |
| Usage | For drilling metal, aluminum sheet, stainless steel, hard wood etc. |
| Customized | Availiable |
| Size | Allover L. | Shank Dia. |
| 4.3 | 40mm | 4.0mm |
| 4.8 | 40mm | 4.0mm |
| 5.0 | 40mm | 4.0mm |
| 5.3 | 40mm | 4.0mm |
| 5.8 | 45mm | 5.0mm |
| 6.0 | 45mm | 5.0mm |
| 6.3 | 45mm | 5.0mm |
| 7.0 | 50mm | 6.0mm |
| 7.3 | 50mm | 6.0mm |
| 8.0 | 50mm | 6.0mm |
| 8.3 | 50mm | 6.0mm |
| 9.4 | 50mm | 6.0mm |
| 10.0 | 50mm | 6.0mm |
| 10.4 | 50mm | 6.0mm |
| 11.5 | 56mm | 8.0mm |
| 12.4 | 56mm | 8.0mm |
| 13.4 | 56mm | 8.0mm |
| 15.0 | 60mm | 10.0mm |
| 16.5 | 60mm | 10.0mm |
| 19.0 | 63mm | 10.0mm |
| 20.5 | 63mm | 10.0mm |
| 23.0 | 67mm | 10.0mm |
| 25.0 | 67mm | 10.0mm |
| 26.0 | 71mm | 10.0mm |
| 28.0 | 71mm | 12.0mm |
| 30.0 | 71mm | 12.0mm |
| 31.0 | 71mm | 12.0mm |
| 40.0 | 80mm | 15.0mm |
| Plastic pipe packing | Metal displaybox packing |
| Plastic tube packing | Plastic displaybox packing |
| 1pc / PVC bag,then 1pc / inner paper box | Grey metal displaybox packing |
| Metal box for drill bits set packing | Wooden box for drill set packing |
| 5/10 pieces packind in PVC bag, then in white paper box, then in carton |