NSN 3820-00-641-7645
Part Details | ROCK DRILL BIT
3820-00-641-7645 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.
Alternate Parts: 1, JACKBIT, 1, JACKBIT, MS3912512, MS39125-12, 3820-00-641-7645, 00-641-7645, 3820006417645, 006417645
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 38 | JAN 01, 1963 | 00-641-7645 | 32591 ( BIT, ROCK DRILL ) |
REFERENCE DRAWINGS & PICTURES
Cross Reference | NSN 3820-00-641-7645
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 1 | 88663 | DRESSER-RAND COINGERSOLL-RAND OPNS |
| JACKBIT | 30760 | INGERSOLL RAND CO |
| 1 | 30760 | INGERSOLL RAND CO |
| JACKBIT | 57576 | INGERSOLL-RAND COCONSTRUCTION EQUIPMENT GROUP |
| MS39125-12 | 96906 | MILITARY STANDARDSPROMULGATED BY MILITARY DEPARTMENTS |
Technical Data | NSN 3820-00-641-7645
| Characteristic | Specifications |
|---|---|
| MATERIAL | STEEL |
| CUTTING END TYPE | JW ANY ACCEPTABLE |
| CLEANING HOLE LOCATION AND QUANTITY | 1 CENTER AND 4 SIDE |
| ATTACHMENT METHOD | THREADED BOTTOM DRIVE |
| MANUFACTURER THREAD DESIGN DESIGNATION | MIL STD 90496 |
| DRILLED HOLE DIAMETER | 1.875 INCHES |
| FEATURES PROVIDED | TUNGSTEN CARBIDE INSERTS |