Part Details | MACHINE COUNTERBORE
5133-00-720-0656 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.
Alternate Parts: 881 1116, 881 11/16, 5133-00-720-0656, 00-720-0656, 5133007200656, 007200656
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 51 | JAN 01, 1963 | 00-720-0656 | 05259 ( COUNTERBORE, MACHINE ) |
REFERENCE DRAWINGS & PICTURES
STANDARD TAPER-ROUND
DOUBLE TWIST W/SCREW POINT
Cross Reference | NSN 5133-00-720-0656
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 881 11/16 | 13130 | CLEVELAND TWIST DRILL CODIV OF GREENFIELD INDUSTRIES INC |
Technical Data | NSN 5133-00-720-0656
| Characteristic | Specifications |
|---|---|
| HARDNESS RATING | 40.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM |
| CUTTING END STYLE | DOUBLE TWIST W/SCREW POINT |
| SHANK STYLE | STANDARD TAPER-ROUND |
| TAPER SHANK SIZE DESIGNATOR | 2 MORSE |
| OVERALL LENGTH | 7.000 INCHES NOMINAL |
| NOMINAL CUTTING DIAMETER | 0.6875 INCHES |
| FLUTE QUANTITY | 3 |
| FEATURES PROVIDED | REPLACEABLE PILOT |
| PILOT HOLE NOMINAL DIAMETER | 0.188 INCHES |
| PILOT DIAMETER | 0.250 INCHES MINIMUM AND 0.625 INCHES MAXIMUM |