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National Stock Number:
5133-01-217-8262
Federal Supply Class:
5133
National Item Identification Number:
012178262
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:
| 23008734 | 63005 | ROLLS-ROYCE CORPORATION | | RC-C21-201 | 83324 | HOWMET GLOBAL FASTENING SYSTEMS INC |
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Techincal Specification:
| CUTTING END STYLE | SOLID | | FLUTE QUANTITY | 4 | | OVERALL LENGTH | 2.560 INCHES NOMINAL | | MATERIAL | STEEL CUTTER | | NOMINAL CUTTING DIAMETER | 0.3280 INCHES | | SPECIAL FEATURES | 45 DEG.,CHAMFERED COUNTERBORE | | PILOT DIAMETER | 0.200 INCHES NOMINAL | | SHANK DIAMETER | 0.500 INCHES NOMINAL | | SHANK STYLE | STRAIGHT ROUND |
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