The Disk Drive Unit, cataloged under National Stock Number 7025-01-661-6401, 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 Western Digital Corp. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 7025-01-661-6401 |
| Primary Part Number | WD40EFRX |
| Item Name | Disk Drive Unit |
| FSC / FSG | 7025 / 70 — Information Technology Input/output and Storage Devices |
| Manufacturer | Western Digital Corp |
| Status | ACTIVE |
| Voltage in Volts and Current Type | 12.0 DC |
| Interface Type | SATA 3 |
| Design Type | PERSONAL COMPUTER MEMORY CARD |
| Drive Quantity | 1 |
| Drive Size | 3.50 |
| Unpackaged Unit Weight | 0.68 KILOGRAMS KG |
| Operating Temp Range | +5.0 TO 60.0 CELSIUS DEGC |
| Data Storage Capacity | 4.0 TERABYTES |
| Unit Design | INTERNAL |
| 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 | J |
| Weight | 1.4250 lbs |
| Cube | 0.0417 cu ft |
| Part Number | Manufacturer |
|---|---|
| WD40EFRX | Seagate Technology Llc Dba Seagate Technology (USA) |
| WD40EFRX | Fotoforniture Guido Sabatini Srl (ITA) |
| WD40EFRX | Hms It S.p.a. (ITA) |
| WD40EFRX PRIMARY | Western Digital Corp (USA) |
| WD40EFRX | Teleconsys Srl (ITA) |
| WD40EFRX | Idem Group Di Longo Antonia & Co. (ITA) |
| WD40EFRX | Mondo Informatica Srl (ITA) |
| Reference | Meaning |
|---|---|
| T003063 | 5/9 Secondary reference Diginext |
NSN 7025-01-661-6401 is a Disk Drive Unit, manufactured by Western Digital Corp, classified under FSC 7025, Information Technology Input/output and Storage Devices. Status: active.
NSN 7025-01-661-6401 has 7 manufacturer part numbers on file: WD40EFRX (Seagate Technology Llc Dba Seagate Technology), WD40EFRX (Fotoforniture Guido Sabatini Srl), WD40EFRX (Hms It S.p.a.), WD40EFRX (Western Digital Corp), WD40EFRX (Teleconsys Srl) and 2 more.
1 possible match (shared part number, not a government interchangeability claim): 7025-01-723-1411. Verify interchangeability with system specifications before substitution.
Key specifications for WD40EFRX: Overall Height: 26.1 MILLIMETERS MAXIMUM MM; Voltage in Volts and Current Type: 12.0 DC; Interface Type: SATA 3; Design Type: PERSONAL COMPUTER MEMORY CARD. 9 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.