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National Stock Number:
3820-00-431-9864
Federal Supply Class:
3820
National Item Identification Number:
004319864
Description:
BIT,ROTARY WELL DRILLING
Detail:
A DETACHABLE, END CUTTING, DRILLING TOOL WITH ONE END THREADED FOR ATTACHING TO A WELL DRILLING TOOL ADAPTER OR DRILLING PIPE. THE OPPOSITE END IS DESIGNED TO PENETRATE THE EARTH WHEN USED IN A ROTARY TYPE WELL DRILLING MACHINE.
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Manufacturer Information:
| 29-238 | 66155 | PORTA DRILL INC |
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Techincal Specification:
| DRILL CAPACITY HOLE DIAMETER | 7.875 INCHES NOMINAL | | CORE DRILLING FEATURE | NOT INCLUDED | | CUTTING EDGE TYPE | ROLLER | | JOINT STEP THREAD FEATURE | NOT INCLUDED | | JOINT THREAD DIAMETER | 4.675 INCHES NOMINAL | | JOINT THREAD DIRECTION | RIGHT-HAND | | JOINT THREAD LENGTH | 3.665 INCHES NOMINAL | | JOINT THREAD LOCATION | EXTERNAL | | JOINT THREAD SERIES MODIFICATION | MODIFIED BY 3.625 IN. TAPER | | JOINT THREAD SERIES | NONSTANDARD | | PILOT SPIKE | NOT INCLUDED | | PILOT CUTTER | INCLUDED | | ROLLER TOOTH TYPE | INTERMEDIATE | | ROLLER QUANTITY | 3 |
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