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National Stock Number:
3820-00-877-2729
Federal Supply Class:
3820
National Item Identification Number:
008772729
Description:
BIT,ROCK DRILL
Detail:
A DETACHABLE, END CUTTING DRILLING TOOL WITH AN INTERNAL THREAD OR TAPERED SOCKET AT ONE END FOR ATTACHING A ROCK DRILL ROD. THE OPPOSITE END IS DESIGNED WITH TWO OR MORE CUTTING EDGES FOR DRILLING INTO ROCK FORMATION BY IMPACT AND A SLIGHT ROTARY MOTION. IT CONTAINS A HOLE OR HOLES IN THE CUTTING FOR THE PURPOSE OF CONDUCTING AIR OR WATER TO CLEAR THE HOLE BEING DRILLED. IT IS USED WITH POWERED DRIFTER DRILLS, SINKER DRILLS, AND THE LIKE.
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Manufacturer Information:
| 3B15S | 30760 | INGERSOLL RAND CO | | 3B15S | 99285 | INGERSOLL-RAND CO ROCK DRILL DIV PLANT | | MILD22233 | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |
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Techincal Specification:
| ATTACHMENT METHOD | THREADED BOTTOM DRIVE | | CLEANING HOLE LOCATION AND QUANTITY | 2 SIDE | | CUTTING END TYPE | CROSS | | DRILLED HOLE DIAMETER | 1.000 INCHES | | MANUFACTURER THREAD DESIGN DESIGNATION | MIL STD 90496 | | MATERIAL | STEEL |
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