Part Number
Part Number:
NSN:
NIIN:
Item Name:
COUNTERSINK
Definition:
AN ANGULAR CUTTING TOOL, USUALLY MADE WITH ANGULAR RELIEF, HAVING ONE OR MORE FLUTES WITH SPECIFIC SIZE ANGLE CUTTING EDGES. IT IS USED FOR CHAMFERING AND COUNTERSINKING HOLES. THE TOOL MAY HAVE A STRAIGHT SHANK, TAPERED SHANK, BIT STOCK SHANK OR SPECIAL SHANK REQUIRING A SPECIAL HOLDER, FOR HOLDING IN A POWER- OR HAND-OPERATED MACHINE. IT MAY BE DESIGNED TO BE DRIVEN OR TURNED BY MEANS OF A WRENCH OR CARPENTER'S BRACE. FOR ITEMS REQUIRING A HOLDER BUT THE HOLDER IS NOT INCLUDED, USE CUTTER, COUNTERSINK.
CAGE Information
| Code | Company |
|---|---|
| 81349 | MILITARY SPECIFICATIONS PROMULGATED |
Federal Supply Class
Title
DRILL BITS, COUNTERBORES, AND CO
Inclusions:
Exclusions:
Characteristics (Decoded)
| MRC | Requirements Statement | Clear Text Reply |
|---|---|---|
| AAVL | PILOT DIAMETER | 0.312 INCHES NOMINAL |
| AAVL | PILOT DIAMETER | 0.312 INCHES NOMINAL |
| AAZF | SHANK STYLE | EXTERNALLY THREADED |
| ABPM | BODY DIAMETER | 0.500 INCHES NOMINAL |
| CQRN | THREAD QUANTITY | 28 PER INCH |
| ALAR | FLUTE QUANTITY | 2 |
| ZZZT | NONDEFINITIVE SPEC/STD DATA | 2 TYPE AND A STYLE AND F SIZE |
| AHYM | NOMINAL THREAD DIAMETER | 0.250 INCHES |
| CBBL | FEATURES PROVIDED | INTEGRAL PILOT |
| THSD | THREAD SERIES DESIGNATOR | UNF |
| AAVA | POINT DIAMETER | 0.187 INCHES NOMINAL |
| CQFM | HARDNESS RATING | 40.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM |
| MATT | MATERIAL | STEEL, HIGH SPEED OVERALL |
| CTHT | INCLUDED ANGLE | 100.0 DEGREES NOMINAL |
| ZZZX | DEPARTURE FROM CITED DESIGNATOR | AS MODIFIED BY PILOT DIAMETER |
| AKZV | CUTTING ROTATION DIRECTION | RIGHT-HAND |
| ABHP | OVERALL LENGTH | 1.250 INCHES NOMINAL |
| AKZH | CUTTING END STYLE | STRAIGHT FLUTE BLUNT END |