The Horn,signal, cataloged under National Stock Number 6350-00-774-3681, 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 U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 11 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6350-00-774-3681 |
| Primary Part Number | 7743681 |
| Item Name | Horn,signal |
| FSC / FSG | 6350 / 63 — Miscellaneous Alarm, Signal, and Security Detection Systems |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Loudness Level in Decibels | 130 DB,1 FT FT |
| Mounting Hole/stud Quantity | 2 |
| Terminal Quantity | 2 |
| Terminal Type | SCREW |
| Sound Projector Quantity | 1 |
| Overall Diameter | 5.250 INCHES NOMINAL IN |
| Sound Projector Type | GRILL |
| Mounting Bracket | PROVIDED |
| Terminal Thread Size and Series/type Designator | 8-32 UNIFIED NATIONAL COARSE (UNC) |
| Material | STEEL HOUSING |
| Hole Diameter | 0.281 INCHES NOMINAL IN |
| 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 |
|---|---|
| 7743681 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 775-1LB | 5/9 Secondary reference U.S. Government activity |
| EA27US | 5/9 Secondary reference E a Laboratories Inc |
| A18345 | 5/9 Secondary reference Sparton Corp |
NSN 6350-00-774-3681 is a Horn,signal, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 6350, Miscellaneous Alarm, Signal, and Security Detection Systems. Status: active.
NSN 6350-00-774-3681 has 1 manufacturer part number on file: 7743681 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 7743681: Loudness Level in Decibels: 130 DB,1 FT FT; Mounting Hole/stud Quantity: 2; Terminal Quantity: 2; Terminal Type: SCREW. 11 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.