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National Stock Number:
3820-00-290-4253
Federal Supply Class:
3820
National Item Identification Number:
002904253
Description:
DRILL ROD,ROCK DRILL
Detail:
A STRAIGHT METAL ROD WITH A SHANK AT ONE END TO FIT THE DRILLING MACHINE CHUCK, AND THE OPPOSITE END EXTERNALLY THREADED OR TAPERED TO RECEIVE A DETACHABLE BIT. THE ROD HAS A PASSAGEWAY THROUGHOUT ITS ENTIRE LENGTH FOR CONDUCTING AIR OR WATER TO CLEAR THE HOLE BEING DRILLED. OVERALL LENGTH MUST BE AT LEAST 15 INCHES (381 MM). EXCLUDES DRILL RODS DESIGNED FOR CORE DRILLING. SEE ALSO DRILL ROD SECTION, ROCK DRILL; AND SHANK, ROD, ROCK DRILL.
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Manufacturer Information:
| MS39125-2 | 96906 | MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |
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Techincal Specification:
| ATTACHMENT METHOD | THREADED BOTTOM DRIVE | | MANUFACTURER THREAD DESIGN DESIGNATION | MIL STD 90496 | | MATERIAL | STEEL | | OVERALL LENGTH | 52.620 INCHES MINIMUM AND 53.244 INCHES MAXIMUM | | ROD NOMINAL SIZE | 1.000 INCHES | | SHANK OVERALL LENGTH | 4.250 INCHES MINIMUM AND 4.312 INCHES MAXIMUM | | SHANK STYLE | COLLARED HEXAGON | | WIDTH ACROSS FLATS | 0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM |
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