The Disk Drive Unit, cataloged under National Stock Number 7025-01-507-4099, 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 IBM. Government technical data includes 12 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. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 7025-01-507-4099 |
| Primary Part Number | DARA 21800 |
| Item Name | Disk Drive Unit |
| FSC / FSG | 7025 / 70 — Information Technology Input/output and Storage Devices |
| Manufacturer | IBM |
| Status | ACTIVE |
| Access Time in Milliseconds | 12.0 |
| Tracks Per Inch | 28500.0 |
| Voltage in Volts and Current Type | 5.0 DC |
| Design Type | HARD DISK |
| Transfer Rate in Megabytes Per Second | 15.4 |
| Power Source | EXTERNAL |
| Drive Quantity | 1 |
| Drive Size | 2.50 |
| Unpackaged Unit Weight | 0.135 KILOGRAMS KG |
| Operating Temp Range | +5.0 TO 55.0 CELSIUS DEGC |
| Data Storage Capacity | 18.00 GIGABYTES |
| 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 | X |
| Weight | 0.2000 lbs |
| Cube | 0.0039 cu ft |
| Part Number | Manufacturer |
|---|---|
| DARA 21800 PRIMARY | IBM (USA) |
NSN 7025-01-507-4099 is a Disk Drive Unit, manufactured by IBM, classified under FSC 7025, Information Technology Input/output and Storage Devices. Status: active.
NSN 7025-01-507-4099 has 1 manufacturer part number on file: DARA 21800 (IBM).
Key specifications for DARA 21800: Access Time in Milliseconds: 12.0; Overall Height: 12.7 MILLIMETERS NOMINAL MM; Tracks Per Inch: 28500.0; Voltage in Volts and Current Type: 5.0 DC. 12 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.