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National Stock Number:
5133-01-326-4530
Federal Supply Class:
5133
National Item Identification Number:
013264530
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:
| 16A11881-1 | 81755 | LOCKHEED MARTIN CORPORATION | | 16VA11881-1 | 81755 | LOCKHEED MARTIN CORPORATION |
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Techincal Specification:
| BODY DIAMETER | 2.059 INCHES MINIMUM AND 2.600 INCHES MAXIMUM | | CUTTING END STYLE | STRAIGHT FLUTE BLUNT END | | HARDNESS RATING | 64.0 ROCKWELL C MINIMUM AND 65.0 ROCKWELL C MAXIMUM | | INCLUDED ANGLE | 40.0 DEGREES NOMINAL | | MATERIAL | | | POINT DIAMETER | 0.375 INCHES NOMINAL | | SPECIAL FEATURES | USED DURING WING MAINTENANCE |
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