The Relay,thermal, cataloged under National Stock Number 5945-00-351-4641, is classified within Federal Supply Class 5945 (Relays and Solenoids) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Meggitt (new Hampshire), Inc. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5945-00-351-4641 |
| Primary Part Number | B1564 |
| Item Name | Relay,thermal |
| FSC / FSG | 5945 / 59 — Relays and Solenoids |
| Manufacturer | Meggitt (new Hampshire), 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 |
| Part Number | Manufacturer |
|---|---|
| B1564 | Meggitt (new Hampshire), Inc (USA) |
| Reference | Meaning |
|---|---|
| SM-C-151431 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5945-00-351-4641 is a Relay,thermal, manufactured by Meggitt (new Hampshire), Inc, classified under FSC 5945, Relays and Solenoids. Status: active.
NSN 5945-00-351-4641 has 1 manufacturer part number on file: B1564 (Meggitt (new Hampshire), Inc).
2 possible matches (shared part number, not a government interchangeability claim): 5310-00-354-3947, 5930-01-166-5696. Verify interchangeability with system specifications before substitution.
Key specifications for B1564: Special Features: CONTACT DATA,SPST,NORMALLY OPEN, REF DWG GROUP 217,ELECTRICAL RATINGS, AC,250 V MAX,3 AMP NOM CURRENT RATING,DC,150 V MAX,0.3 AMP NOM CURRENT RATING,HEATER DATA,DC,26.5 V,5 W;TERMINAL DATA,2 HEATER ELEMENT TERMINALS,2 TERMINALS FOR CONTACTS;HERMETICALLY SEALED;GLASS ENVELOPE;AMBIENT TEMP RANGE COMPENSATED FOR OPERATION FROM MINUS 60 DEG C TO PLUS 85 DEG C/5 SEC PORM 1 TIME DELAY;OVERALL DIM.EXCL TERMINALS,4 IN. LG,1.275 IN. DIA;MOUNTS BY MEANS OF PLUG IN SOCKET;FOR GENERAL PURPOSE USE V. 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.