| Item Name | Countersink |
| Federal Supply Group (FSG) | Hand Tools |
| Federal Supply Class (FSC) | 5133 Drill Bits Counterbores and Countersinks Hand and Machine |
| National Item Identification Number (NIIN) | 00-293-2297 (002932297) |
| NCB Code | USA (00) |
| Manufacturer | Federal Specifications |
| MRC | Criteria | Characteristic |
|---|---|---|
| SR-1 | NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | GGGC613 |
| CTHT | INCLUDED ANGLE | 81.5 DEGREES NOMINAL |
| SR-1 | SPEC/STD CONTROLLING DATA | |
| ZZZT | NONDEFINITIVE SPEC/STD DATA | 2 TYPE AND B CLASS AND 1/2 SIZE |
| AKZV | CUTTING ROTATION DIRECTION | RIGHT-HAND |
| AKZH | CUTTING END STYLE | ROSE |
| ALAF | SHANK LARGE END SQUARE WIDTH | 0.312 INCHES MINIMUM AND 0.438 INCHES MAXIMUM |
| ALAR | FLUTE QUANTITY | ANY ACCEPTABLE |
| AAZF | SHANK STYLE | TAPER-SQUARE |
| ABHP | OVERALL LENGTH | 3.000 INCHES MINIMUM AND 4.500 INCHES MAXIMUM |
| ABPM | BODY DIAMETER | 0.500 INCHES NOMINAL |
| ALAH | SHANK SMALL END SQUARE WIDTH | 0.156 INCHES MINIMUM AND 0.250 INCHES MAXIMUM |
| ZZZX | DEPARTURE FROM CITED DESIGNATOR | AS MOD BY MATERIAL AND BODY DIA |
| CQFM | HARDNESS RATING | 40.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM |
| MATT | MATERIAL | STEEL OVERALL |
| SR-1 | MANUFACTURERS CODE | 81348 |
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