The Disk Drive Unit, cataloged under National Stock Number 7025-01-561-0277, is classified within Federal Supply Class 7025 (Information Technology Input/output and Storage Devices) of the General Purpose ADP Equipment group. The manufacturer of record is Lockheed Martin Corporation Div Rms - Manassas. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 7025-01-561-0277 |
| Primary Part Number | B1277 |
| Item Name | Disk Drive Unit |
| FSC / FSG | 7025 / 70 — Information Technology Input/output and Storage Devices |
| Manufacturer | Lockheed Martin Corporation Div Rms - Manassas |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Shelf Life Code | 0 |
| Criticality Code | X |
| Unit of Issue | EA |
| Acquisition advice code | YM |
| Weight | 1.5830 lbs |
| Cube | 0.0177 cu ft |
| Part Number | Manufacturer |
|---|---|
| B1277 PRIMARY | Lockheed Martin Corporation Div Rms - Manassas (USA) |
| 71143-01-Q70 | Mercury Systems, Inc. Dba Mercury Systems, Inc (USA) |
| Reference | Meaning |
|---|---|
| 79C0775-00 | 5/2 Secondary reference U.S. Government activity |
| B1277 | 3/2 Design control — primary reference U.S. Government activity |
NSN 7025-01-561-0277 is a Disk Drive Unit, manufactured by Lockheed Martin Corporation Div Rms - Manassas, classified under FSC 7025, Information Technology Input/output and Storage Devices. Status: active.
NSN 7025-01-561-0277 has 2 manufacturer part numbers on file: B1277 (Lockheed Martin Corporation Div Rms - Manassas), 71143-01-Q70 (Mercury Systems, Inc. Dba Mercury Systems, Inc).
Key specifications for B1277: Part Name Assigned by Controlling Agency: HD W/CARRIER, 400GB GB; End Item Identification: AN/UYQ-70 (V) ADV DISPLAY SYS N/A FOR COSAL USE. 0 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.