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National Stock Number:
5133-01-499-2595
Federal Supply Class:
5133
National Item Identification Number:
014992595
Description:
DRILL,TWIST
Detail:
AN END CUTTING TOOL HAVING TWO OR MORE CUTTING EDGES, AND HAVING HELICAL FLUTES OR GROOVES ADJACENT THERETO FOR THE ADMISSION OF COOLANT AND THE EJECTION OF CUTTINGS OR CHIPS. IT IS USED FOR DRILLING HOLES IN VARIOUS MATERIALS. EXCLUDES DRILL, MASONRY (AS MODIFIED); AND DRILL,TWIST, BONE. SEE ALSO DRILL, PIVOT, JEWELER'S AND DRILL, HARDENED STEEL, CARBIDE TIPPED.
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Manufacturer Information:
| 53616 | 16568 | PRECISION TWIST DRILL CO | | C0500-6 1/4 | 16568 | PRECISION TWIST DRILL CO | | CO500-6 1/4 | 16568 | PRECISION TWIST DRILL CO |
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Techincal Specification:
| CUTTING END STYLE | GENERAL PURPOSE | | NOMINAL CUTTING DIAMETER | 0.2500 INCHES | | CUTTING ROTATION DIRECTION | RIGHT-HAND | | POINT TYPE | SPLIT | | POINT ANGLE | 135.0 DEGREES NOMINAL | | FLUTE QUANTITY | 2 | | OVERALL LENGTH | 6.000 INCHES NOMINAL | | MATERIAL | STEEL ALLOY OVERALL | | SURFACE TREATMENT | COPPER AND | | OXIDE FILM OVERALL | | HARDNESS RATING | 65.0 ROCKWELL C MINIMUM AND | | 67.0 ROCKWELL C MAXIMUM | | FLUTE LENGTH | 2.750 INCHES NOMINAL | | SHANK STYLE | STRAIGHT ROUND | | SHANK DIAMETER | 0.250 INCHES NOMINAL | | SPECIAL FEATURES | AIRCRAFT EXTENSION TYPE; FRACTIONAL SIZE 1/4 |
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