The Relay,thermal, cataloged under National Stock Number 5945-01-198-6331, is classified within Federal Supply Class 5945 (Relays and Solenoids) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Air Marine Systems, Inc. Dba Air Marine Systems Inc. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5945-01-198-6331 |
| Primary Part Number | CZ639-1 |
| Item Name | Relay,thermal |
| FSC / FSG | 5945 / 59 — Relays and Solenoids |
| Manufacturer | Air Marine Systems, Inc. Dba Air Marine Systems Inc |
| Status | ACTIVE |
| Heater Voltage Rating in Volts | 24.0 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| CZ639-1 PRIMARY | Air Marine Systems, Inc. Dba Air Marine Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| 80-7658 | 7/2 Vendor item drawing reference Department of Defense Project Manager-Mobile Electric Power |
| 402539-001 | 5/2 Secondary reference U.S. Government activity |
NSN 5945-01-198-6331 is a Relay,thermal, manufactured by Air Marine Systems, Inc. Dba Air Marine Systems Inc, classified under FSC 5945, Relays and Solenoids. Status: active.
NSN 5945-01-198-6331 has 1 manufacturer part number on file: CZ639-1 (Air Marine Systems, Inc. Dba Air Marine Systems Inc).
Key specifications for CZ639-1: Overall Height: 2.430 INCHES NOMINAL IN; Heater Voltage Rating in Volts: 24.0; Overall Length: 1.530 INCHES NOMINAL IN; Overall Width: 1.410 INCHES NOMINAL IN. 1 specification is 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.