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National Stock Number:
5133-00-037-4983
Federal Supply Class:
5133
National Item Identification Number:
000374983
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:
| PWA1799 | 77445 | RTX CORPORATION |
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Techincal Specification:
| CUTTING END STYLE | SOLID | | FEATURES PROVIDED | INTEGRAL PILOT | | FLUTE QUANTITY | 4 | | OVERALL LENGTH | 8.625 INCHES MINIMUM AND 8.750 INCHES MAXIMUM | | MATERIAL | STEEL OVERALL | | NOMINAL CUTTING DIAMETER | 0.9150 INCHES AND 0.9170 INCHES | | SHANK STYLE | STANDARD TAPER-ROUND | | SPECIAL FEATURES | 45 DEGREE CHAMFERED COUNTERBORE | | PILOT DIAMETER | 0.631 INCHES MINIMUM AND 0.633 INCHES MAXIMUM | | TAPER SHANK SIZE DESIGNATOR | 2 MORSE |
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