The Retainer,spring, cataloged under National Stock Number 5820-00-355-9520, is classified within Federal Supply Class 5820 (Radio and Television Communication Equipment, Except Airborne) of the Communication, Detection, and Coherent Radiation Equipment group. The manufacturer of record is Lockheed Martin Corporation Div Rms - Mitchel Field. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5820-00-355-9520 |
| Primary Part Number | SC-D-11222-9 |
| Item Name | Retainer,spring |
| FSC / FSG | 5820 / 58 — Radio and Television Communication Equipment, Except Airborne |
| Manufacturer | Lockheed Martin Corporation Div Rms - Mitchel Field |
| Status | ACTIVE |
| General Characteristics Item Description | O/A DIM. 2.438 IN. DIA,2.125 IN. LG,MATERIAL MALLEABLE IRON IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| SC-D-11222-9 | Lockheed Martin Corporation Div Rms - Mitchel Field (USA) |
| Reference | Meaning |
|---|---|
| SC-D-11222-9 | 3/2 Design control — primary reference U.S. Government activity |
| SC-D-11222-9 | 5/2 Secondary reference U.S. Government activity |
NSN 5820-00-355-9520 is a Retainer,spring, manufactured by Lockheed Martin Corporation Div Rms - Mitchel Field, classified under FSC 5820, Radio and Television Communication Equipment, Except Airborne. Status: active.
NSN 5820-00-355-9520 has 1 manufacturer part number on file: SC-D-11222-9 (Lockheed Martin Corporation Div Rms - Mitchel Field).
Key specifications for SC-D-11222-9: General Characteristics Item Description: O/A DIM. 2.438 IN. DIA,2.125 IN. LG,MATERIAL MALLEABLE IRON IN. 1 specification is documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 5820-00-355-9520 has DEMIL Code B. 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.