The Chuck,bit, cataloged under National Stock Number 3820-01-339-7919, 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 1 specification, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3820-01-339-7919 |
| Primary Part Number | 57416075 |
| Item Name | Chuck,bit |
| FSC / FSG | 3820 / 38 — Mining, Rock Drilling, Earth Boring, and Related Equipment |
| Manufacturer | Atlas Copco |
| Status | ACTIVE |
| General Characteristics Item Description | 6.0IN. TRICONE,STEEL ASTM A36,1.00IN .THK,13.13IN.DIA W/3 INTERNAL NOTCHES EQUALLY SPACED APART,INSIDE OPENING TRI-LOPED APPROX 6.19IN.DIA IN |
| 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 |
|---|---|
| 855017B0531 | Marine Corps Systems Command Div Marine Corps Systems Command Technical Data Repository Customer Service (USA) |
| 855017B0531 | Black & Company (USA) |
| 57416075 PRIMARY | Atlas Copco (USA) |
| Reference | Meaning |
|---|---|
| 855017B0531 | 5/9 Secondary reference Atlas Copco |
NSN 3820-01-339-7919 is a Chuck,bit, manufactured by Atlas Copco, classified under FSC 3820, Mining, Rock Drilling, Earth Boring, and Related Equipment. Status: active.
NSN 3820-01-339-7919 has 3 manufacturer part numbers on file: 855017B0531 (Marine Corps Systems Command Div Marine Corps Systems Command Technical Data Repository Customer Service), 855017B0531 (Black & Company), 57416075 (Atlas Copco).
Key specifications for 57416075: General Characteristics Item Description: 6.0IN. TRICONE,STEEL ASTM A36,1.00IN .THK,13.13IN.DIA W/3 INTERNAL NOTCHES EQUALLY SPACED APART,INSIDE OPENING TRI-LOPED APPROX 6.19IN.DIA IN; End Item Identification: USMC ITWD DRILL P/N 855017W0454. 1 specification is 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.