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National Stock Number:
5133-01-282-0636
Federal Supply Class:
5133
National Item Identification Number:
012820636
Description:
COUNTERSINK
Detail:
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.
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Manufacturer Information:
| TFIM25.0120-278 | 76301 | THE BOEING COMPANY | | TFIM25.0120278 | 76301 | THE BOEING COMPANY |
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Techincal Specification:
| MATERIAL | STEEL OVERALL | | HARDNESS RATING | 49.0 ROCKWELL C MINIMUM AND | | 54.0 ROCKWELL C MAXIMUM | | CUTTING END STYLE | STRAIGHT FLUTE BLUNT END | | POINT DIAMETER | 0.278 INCHES NOMINAL | | BODY DIAMETER | 0.625 INCHES NOMINAL | | INCLUDED ANGLE | 90.0 DEGREES NOMINAL | | SHANK STYLE | EXTERNALLY THREADED | | THREAD SERIES DESIGNATOR | UNF | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | THREAD QUANTITY | 28 PER INCH | | THREAD DIRECTION | RIGHT-HAND | | OVERALL LENGTH | 1.430 INCHES NOMINAL | | CUTTING ROTATION DIRECTION | RIGHT-HAND | | FLUTE QUANTITY | 1 | | FEATURES PROVIDED | INTEGRAL PILOT | | PILOT DIAMETER | 0.278 INCHES NOMINAL |
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