The Relay,electromagnetic, cataloged under National Stock Number 5945-01-666-9250, is classified within Federal Supply Class 5945 (Relays and Solenoids) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Te Connectivity Corporation. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5945-01-666-9250 |
| Primary Part Number | FCA-210-AY4 |
| Item Name | Relay,electromagnetic |
| FSC / FSG | 5945 / 59 — Relays and Solenoids |
| Manufacturer | Te Connectivity Corporation |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 2 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY |
| Mounting Facility Pattern | IN-LINE SINGLE MOUNTING FACILITY |
| Duty Type | INTERMITTENT |
| Unthreaded Mounting Hole Diameter | 0.150 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Coil Quantity | 1 |
| Terminal Type and Quantity | 9 PIN ALL FUNCTIONS |
| 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 |
|---|---|
| FCA-210-AY4 PRIMARY | Te Connectivity Corporation (USA) |
| FCA-210-AY4 | Cii Guardian International Limited (IND) |
| Reference | Meaning |
|---|---|
| FCA-210-AY4 | 3/9 Design control — primary reference Te Connectivity Corporation Dba Raychem Product Division |
NSN 5945-01-666-9250 is a Relay,electromagnetic, manufactured by Te Connectivity Corporation, classified under FSC 5945, Relays and Solenoids. Status: active.
NSN 5945-01-666-9250 has 2 manufacturer part numbers on file: FCA-210-AY4 (Te Connectivity Corporation), FCA-210-AY4 (Cii Guardian International Limited).
Key specifications for FCA-210-AY4: Mounting Facility Type and Quantity: 2 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY; Overall Height: 13.34 MILLIMETERS NOMINAL MM; Mounting Facility Pattern: IN-LINE SINGLE MOUNTING FACILITY; Duty Type: INTERMITTENT. 6 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.