The Horn,loudspeaker, cataloged under National Stock Number 5965-00-504-6661, is classified within Federal Supply Class 5965 (Headsets, Handsets, Microphones and Speakers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Spencer Industries Inc. Government technical data includes 9 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5965-00-504-6661 |
| Primary Part Number | SC-D-90643-2 |
| Item Name | Horn,loudspeaker |
| FSC / FSG | 5965 / 59 — Headsets, Handsets, Microphones and Speakers |
| Manufacturer | Spencer Industries Inc |
| Status | ACTIVE |
| Device Type Accommodated | DRIVER UNIT |
| Usage Design | OUTDOOR |
| Coupling Length | 1.375 INCHES NOMINAL IN |
| Overall Diameter | 10.000 INCHES NOMINAL IN |
| Features Provided | THREADED END COUPLING |
| Unit Type | RE-ENTRANT |
| Surface Treatment | ENAMEL |
| Acoustic Length Developed | 42.000 INCHES IN |
| Material | ALUMINUM |
| 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 |
|---|---|
| SC-D-90643-2 | Spencer Industries Inc (USA) |
| SC-D-90643-2 | Micacraft Products Co Inc (USA) |
| Reference | Meaning |
|---|---|
| SC-D-90643-2 | 5/9 Secondary reference U.S. Government activity |
| S58-9 | 5/9 Secondary reference U.S. Government activity |
| SC-D-90643-2 | 3/2 Design control — primary reference U.S. Government activity |
| SC-D-90643-2 | 5/9 Secondary reference Radalab Inc |
NSN 5965-00-504-6661 is a Horn,loudspeaker, manufactured by Spencer Industries Inc, classified under FSC 5965, Headsets, Handsets, Microphones and Speakers. Status: active.
NSN 5965-00-504-6661 has 2 manufacturer part numbers on file: SC-D-90643-2 (Spencer Industries Inc), SC-D-90643-2 (Micacraft Products Co Inc).
Key specifications for SC-D-90643-2: Device Type Accommodated: DRIVER UNIT; Usage Design: OUTDOOR; Coupling Length: 1.375 INCHES NOMINAL IN; Overall Diameter: 10.000 INCHES NOMINAL IN. 9 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.