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National Stock Number:
5133-00-595-8256
Federal Supply Class:
5133
National Item Identification Number:
005958256
Description:
COUNTERBORE,MACHINE
Detail:
An end cutting tool having two or more cutting edges with flutes or grooves for the passage of cuttings, an integral or removable holder designed for adaption to the end of a machine spindle. The flutes or grooves are usually helical to give a positive rake at the cutting edges. It is designed to form a flat-bottomed enlargement of the mouth of a previously formed cylindrical hole. For items requiring a holder but the holder is not included, use CUTTER, COUNTERBORE.
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Manufacturer Information:
| 3000-0312 | 13130 | CLEVELAND TWIST DRILL CO DIV OF GREENFIELD INDUSTRIES INC | | 50702 | 42970 | LEAR SIEGLER INC NATIONAL TWIST DRILL AND TOOL DIV | | 879 5/16 | 13130 | CLEVELAND TWIST DRILL CO DIV OF GREENFIELD INDUSTRIES INC | | 879-5-16 | 13130 | CLEVELAND TWIST DRILL CO DIV OF GREENFIELD INDUSTRIES INC | | 879 5/16 | 1NEX4 | KENNAMETAL INC. DIV KENNAMETAL INDUSTRIAL PRODUCTS GROUP | | 879 5/16 | 60NQ9 | GREENFIELD INDUSTRIES INC | | C46425 | 1NEX4 | KENNAMETAL INC. DIV KENNAMETAL INDUSTRIAL PRODUCTS GROUP | | C46425 | 60NQ9 | GREENFIELD INDUSTRIES INC |
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Techincal Specification:
| CUTTING END STYLE | INTERCHANGEABLE PILOT | | FEATURES PROVIDED | REPLACEABLE PILOT | | FLUTE QUANTITY | 3 | | OVERALL LENGTH | 3.812 INCHES NOMINAL | | MATERIAL | STEEL OVERALL | | NOMINAL CUTTING DIAMETER | 0.3125 INCHES | | PILOT HOLE NOMINAL DIAMETER | 0.094 INCHES | | SHANK DIAMETER | 0.297 INCHES NOMINAL | | SHANK STYLE | STRAIGHT ROUND |
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