The Computer Subassembly, cataloged under National Stock Number 1220-00-553-8570, is classified within Federal Supply Class 1220 (Fire Control Computing Sights and Devices) of the Fire Control Equipment group. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 1220-00-553-8570 |
| Item Name | Computer Subassembly |
| FSC / FSG | 1220 / 12 — Fire Control Computing Sights and Devices |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL C — Remove/Demil Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 423422 | 3/2 Design control — primary reference U.S. Government activity |
NSN 1220-00-553-8570 is a Computer Subassembly, classified under FSC 1220, Fire Control Computing Sights and Devices. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5305-01-164-6325. Verify interchangeability with system specifications before substitution.
Key specifications for 1220-00-553-8570: Overall Height: 1.250 INCHES NOMINAL IN; Overall Length: 9.375 INCHES NOMINAL IN; Overall Width: 8.875 INCHES NOMINAL IN; Special Features: MAJOR COMPONENTS: CAPACITOR; DIODE; ELECTRON TUBE; FRAME ASSEMBLY; RESISTOR; SEMICONDUCTOR DEVICE. 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.
NSN 1220-00-553-8570 has DEMIL Code C. Demilitarization may be required before disposal or transfer to non-military entities.
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.