Part Number
Part Number:
NSN:
NIIN:
Item Name:
COUNTERBORE , MACHINE
Definition:
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.
CAGE Information
| Code | Company |
|---|---|
| 76301 | BOEING COMPANY THE DBA BOEING |
Federal Supply Class
Title
DRILL BITS, COUNTERBORES, AND CO
Inclusions:
Exclusions:
Characteristics (Decoded)
| MRC | Requirements Statement | Clear Text Reply |
|---|---|---|
| ASDB | WIDTH ACROSS FLATS | 0.375 INCHES NOMINAL |
| AAZF | SHANK STYLE | HEXAGON |
| ALAR | FLUTE QUANTITY | 4 |
| CQFM | HARDNESS RATING | NOT RATED |
| CBBL | FEATURES PROVIDED | INTEGRAL PILOT |
| AAVL | PILOT DIAMETER | 0.499 INCHES NOMINAL |
| AKZH | CUTTING END STYLE | SOLID |
| MATT | MATERIAL | STEEL OVERALL |
| ABHP | OVERALL LENGTH | 1.800 INCHES NOMINAL |
| AKZL | NOMINAL CUTTING DIAMETER | 0.6179 INCHES |