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Countersink
A countersink is a conical hole cut into a manufactured object, or the cutter used to cut such a hole. A commonusage 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 hex-headed capscrew.) 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. The basic geometry of a countersink (cutter) inherently can be applied to the plunging applications described above (axial feed only) and also to other milling applications (sideways traversal). Therefore countersinks overlap in form, function, and sometimes name with chamfering endmills (endmills with angled tips). Regardless of the name given to the cutter, the surface being generated may be a conical chamfer (plunging applications) or a beveled corner for the intersection of twoplanes (traversing applications)
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Add:No.333-1-807 Hefeng Rd,Huaqiao Kunshan-215332 Jiangsu, China
Tel:86-512-36809449
Mob:86-13636570397
Fax: 86-512-36809001
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Address: NO.333-1-807,HEFENG RD, HUAQIAO KUNSHAN-215332 JIANGSU,CHINA
Telephone:86-512-36809449
Mobile:86-13636570397
Fax: 86-512-36809001
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