The Bit,rock Drill, cataloged under National Stock Number 3820-01-339-2139, is classified within Federal Supply Class 3820 (Mining, Rock Drilling, Earth Boring, and Related Equipment) of the Construction, Mining, Excavating Equipment group. The manufacturer of record is Atlas Copco. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3820-01-339-2139 |
| Primary Part Number | 51302388 |
| Item Name | Bit,rock Drill |
| FSC / FSG | 3820 / 38 — Mining, Rock Drilling, Earth Boring, and Related Equipment |
| Manufacturer | Atlas Copco |
| Status | ACTIVE |
| Drilled Hole Diameter | 6.130 INCHES IN |
| Material | STEEL |
| Cleaning Hole Location and Quantity | 2 FRONT |
| Attachment Method | THREADED BOTTOM DRIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 51302388 | Atlas Copco (USA) |
| Reference | Meaning |
|---|---|
| 50764943 | 3/9 Design control — primary reference Ingersoll-Rand Co Professional Tools Group |
| 855017P0514 | 7/1 Vendor item drawing reference Marine Corps Systems Command Div Marine Corps Systems Command Technical Data Repository Customer Service |
| 51302388 | 5/9 Secondary reference Ingersoll-Rand Co Professional Tools Group |
| 855017P0514-2 | 5/9 Secondary reference Atlas Copco |
| 855017P0514-2 | 5/9 Secondary reference Ingersoll-Rand Co Professional Tools Group |
NSN 3820-01-339-2139 is a Bit,rock Drill, manufactured by Atlas Copco, classified under FSC 3820, Mining, Rock Drilling, Earth Boring, and Related Equipment. Status: active.
NSN 3820-01-339-2139 has 1 manufacturer part number on file: 51302388 (Atlas Copco).
Key specifications for 51302388: Drilled Hole Diameter: 6.130 INCHES IN; Special Features: HAMMER BIT; Material: STEEL; Cleaning Hole Location and Quantity: 2 FRONT. 4 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.