The Horn,signal, cataloged under National Stock Number 6350-01-523-6558, is classified within Federal Supply Class 6350 (Miscellaneous Alarm, Signal, and Security Detection Systems) of the Alarm, Signal, and Security Detection Systems group. The manufacturer of record is Dynalec Corporation. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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.
| Parameter | Value |
|---|---|
| NSN | 6350-01-523-6558 |
| Primary Part Number | 702020-552 |
| Item Name | Horn,signal |
| FSC / FSG | 6350 / 63 — Miscellaneous Alarm, Signal, and Security Detection Systems |
| Manufacturer | Dynalec Corporation |
| Status | ACTIVE |
| Terminal Type | CONNECTOR, RECEPTACLE |
| Projector Quantity | 1 |
| Sound Projector Quantity | 1 |
| Sound Unit Type | SINGLE |
| Projector Type | ANY ACCEPTABLE |
| Mounting Bracket | NOT PROVIDED |
| Operation Method | ELECTRICAL |
| Sound Signal Direction Quantity | 1 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 702020-552 PRIMARY | Dynalec Corporation (USA) |
| TM-33-SB(IC/H3S4) | Federal Signal Corporation (USA) |
| Reference | Meaning |
|---|---|
| 702020-550 REV- FIND NO 2 | 5/9 Secondary reference Dynalec Corporation |
| TM-33-SD(IC/H3S4) | 5/9 Secondary reference Federal Signal Corporation |
NSN 6350-01-523-6558 is a Horn,signal, manufactured by Dynalec Corporation, classified under FSC 6350, Miscellaneous Alarm, Signal, and Security Detection Systems. Status: active.
NSN 6350-01-523-6558 has 2 manufacturer part numbers on file: 702020-552 (Dynalec Corporation), TM-33-SB(IC/H3S4) (Federal Signal Corporation).
Key specifications for 702020-552: Overall Height: 0.840 INCHES NOMINAL IN; Terminal Type: CONNECTOR, RECEPTACLE; Projector Quantity: 1; Sound Projector Quantity: 1. 8 specifications are 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.
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.