The Buzzer, cataloged under National Stock Number 6350-01-188-0286, 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 Projects Unlimited Inc. Government technical data includes 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 6350-01-188-0286 |
| Primary Part Number | AI-400 |
| Item Name | Buzzer |
| FSC / FSG | 6350 / 63 — Miscellaneous Alarm, Signal, and Security Detection Systems |
| Manufacturer | Projects Unlimited Inc |
| Status | ACTIVE |
| Voltage in Volts and Current Type | 16.5 DC |
| Overall Diameter | 1.635 INCHES NOMINAL IN |
| Mounting Method | BULKHEAD |
| Inclosure | INCLUDED |
| Action Type | VIBRATING |
| Material | PLASTIC POLYAMIDE NYLON |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
NSN 6350-01-188-0286 is a Buzzer, manufactured by Projects Unlimited Inc, classified under FSC 6350, Miscellaneous Alarm, Signal, and Security Detection Systems. Status: active.
NSN 6350-01-188-0286 has 2 manufacturer part numbers on file: AI-400K (Projects Unlimited Inc), AI-400 (Projects Unlimited Inc).
1 possible match (shared part number, not a government interchangeability claim): 2815-01-658-7867. Verify interchangeability with system specifications before substitution.
Key specifications for AI-400: Overall Height: 0.537 INCHES NOMINAL IN; Voltage in Volts and Current Type: 16.5 DC; Overall Diameter: 1.635 INCHES NOMINAL IN; Mounting Method: BULKHEAD. 6 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.