The Crtl Unit,whistle, cataloged under National Stock Number 6110-01-571-1337, is classified within Federal Supply Class 6110 (Electrical Control Equipment) of the Electric Wire, Power, and Distribution Equipment group. The manufacturer of record is Kahlenberg Industries, Inc. Dba Kahlenberg Industries Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 6110-01-571-1337 |
| Primary Part Number | 3-6428 |
| Item Name | Crtl Unit,whistle |
| FSC / FSG | 6110 / 61 — Electrical Control Equipment |
| Manufacturer | Kahlenberg Industries, Inc. Dba Kahlenberg Industries Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| 3-6428 PRIMARY | Kahlenberg Industries, Inc. Dba Kahlenberg Industries Inc (USA) |
NSN 6110-01-571-1337 is a Crtl Unit,whistle, manufactured by Kahlenberg Industries, Inc. Dba Kahlenberg Industries Inc, classified under FSC 6110, Electrical Control Equipment. Status: active.
NSN 6110-01-571-1337 has 1 manufacturer part number on file: 3-6428 (Kahlenberg Industries, Inc. Dba Kahlenberg Industries Inc).
1 possible match (shared part number, not a government interchangeability claim): 4720-01-622-4310. Verify interchangeability with system specifications before substitution.
Key specifications for 3-6428: Special Features: DC VOLT SIGNAL TIMER AND WHISTLE; End Item Identification: CONTROL UNIT , 3-6428. 0 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.