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National Stock Number:
3820-00-641-7645
Federal Supply Class:
3820
National Item Identification Number:
006417645
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:
| 1 | 30760 | INGERSOLL RAND CO | | 1 | 88663 | DRESSER-RAND CO INGERSOLL-RAND OPNS A JOINT VENTURE | | JACKBIT | 30760 | INGERSOLL RAND CO | | JACKBIT | 57576 | INGERSOLL-RAND CO CONSTRUCTION EQUIPMENT GROUP | | MS39125-12 | 96906 | MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |
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Techincal Specification:
| DRILLED HOLE DIAMETER | 1.875 INCHES | | ATTACHMENT METHOD | THREADED BOTTOM DRIVE | | CLEANING HOLE LOCATION AND QUANTITY | 1 CENTER AND 4 SIDE | | CUTTING END TYPE | CROSS | | FEATURES PROVIDED | TUNGSTEN CARBIDE INSERTS | | MANUFACTURER THREAD DESIGN DESIGNATION | MIL STD 90496 | | MATERIAL | STEEL |
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