The Relay Assembly, cataloged under National Stock Number 5945-00-552-3737, is classified within Federal Supply Class 5945 (Relays and Solenoids) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Honeywell International, Inc Div Aerospace-Tucson. Government technical data includes 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5945-00-552-3737 |
| Primary Part Number | 199921 |
| Item Name | Relay Assembly |
| FSC / FSG | 5945 / 59 — Relays and Solenoids |
| Manufacturer | Honeywell International, Inc Div Aerospace-Tucson |
| Status | ACTIVE |
| Controlling Agency | AIRESEARCH MFG CO |
| Identifying Number | MPR-1-1C 330D TYPE NO. |
| Individual Relay Quantity | 2 |
| Mounting Facility | CONTAINER |
| Relay Type | ARMATURE |
| Surface Treatment | LACQUER MOUNTING |
| Mounting Configuration | TWO 0.190 IN. TO 0.195 IN. DIA MTG HOLES ON 1.875 IN. MTG CENTERS IN |
| Usage Design | CIRCUIT SWITCHING |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 5945-00-552-3737 is a Relay Assembly, manufactured by Honeywell International, Inc Div Aerospace-Tucson, classified under FSC 5945, Relays and Solenoids. Status: active.
NSN 5945-00-552-3737 has 2 manufacturer part numbers on file: P7952A (Projects Unlimited Inc), 199921 (Honeywell International, Inc Div Aerospace-Tucson).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-184-1030. Verify interchangeability with system specifications before substitution.
Key specifications for 199921: Overall Height: 2.120 INCHES MAXIMUM IN; Controlling Agency: AIRESEARCH MFG CO; Identifying Number: MPR-1-1C 330D TYPE NO.; Overall Length: 1.805 INCHES NOMINAL IN. 8 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.