Part Details | MACHINE COUNTERBORE
5133-01-051-6684 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: 30000250, 3000-0250, 879, C30000250, C3000-0250, 50700, 3230, 6210031, 62-10031, 4702, 5133-01-051-6684, 01-051-6684, 5133010516684, 010516684
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 51 | DEC 05, 1977 | 01-051-6684 | 05259 ( COUNTERBORE, MACHINE ) |
REFERENCE DRAWINGS & PICTURES
STRAIGHT ROUND
DOUBLE TWIST W/SCREW POINT
Cross Reference | NSN 5133-01-051-6684
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 3000-0250 | 13130 | CLEVELAND TWIST DRILL CODIV OF GREENFIELD INDUSTRIES INC |
| 879 | 13130 | CLEVELAND TWIST DRILL CODIV OF GREENFIELD INDUSTRIES INC |
| C3000-0250 | 1NEX4 | KENNAMETAL INC.DIV KENNAMETAL INDUSTRIAL PRODUCTS |
| 50700 | 42970 | LEAR SIEGLER INCNATIONAL TWIST DRILL AND TOOL DIV |
| 3230 | 42970 | LEAR SIEGLER INCNATIONAL TWIST DRILL AND TOOL DIV |
| 62-10031 | 71485 | UNION BUTTERFIELD CORPP O BOX 9000 CRYSTAL LAKE IL 60039 |
| 4702 | 71485 | UNION BUTTERFIELD CORPP O BOX 9000 CRYSTAL LAKE IL 60039 |
Technical Data | NSN 5133-01-051-6684
| 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 | STRAIGHT ROUND |
| SHANK DIAMETER | 0.234 INCHES NOMINAL |
| OVERALL LENGTH | 3.812 INCHES NOMINAL |
| NOMINAL CUTTING DIAMETER | 0.2500 INCHES |
| FLUTE QUANTITY | 3 |
| FEATURES PROVIDED | REPLACEABLE PILOT |
| PILOT HOLE NOMINAL DIAMETER | 0.094 INCHES |
| PILOT DIAMETER | 0.125 INCHES MINIMUM AND 0.188 INCHES MAXIMUM |