The Switch,thermostatic, cataloged under National Stock Number 5930-01-377-5891, is classified within Federal Supply Class 5930 (Switches) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Rolls-Royce Canada Limited Div Rolls-Royce Canada Limited. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5930-01-377-5891 |
| Primary Part Number | 345-12778 |
| Item Name | Switch,thermostatic |
| FSC / FSG | 5930 / 59 — Switches |
| Manufacturer | Rolls-Royce Canada Limited Div Rolls-Royce Canada Limited |
| Status | ACTIVE |
| Style Designator | RECTANGULAR |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 345-12778 | Rolls-Royce Canada Limited Div Rolls-Royce Canada Limited (CAN) |
| 345-12778 | L3harris Technologies, Inc. (USA) |
| ML1H-H202S | Barksdale Inc (USA) |
| Reference | Meaning |
|---|---|
| ML1H-H202S | 3/2 Design control — primary reference U.S. Government activity |
NSN 5930-01-377-5891 is a Switch,thermostatic, manufactured by Rolls-Royce Canada Limited Div Rolls-Royce Canada Limited, classified under FSC 5930, Switches. Status: active.
NSN 5930-01-377-5891 has 3 manufacturer part numbers on file: 345-12778 (Rolls-Royce Canada Limited Div Rolls-Royce Canada Limited), 345-12778 (L3harris Technologies, Inc.), ML1H-H202S (Barksdale Inc).
Key specifications for 345-12778: Overall Height: 7.906 INCHES NOMINAL IN; Style Designator: RECTANGULAR; Overall Length: 2.750 INCHES NOMINAL IN; Overall Width: 2.735 INCHES NOMINAL IN. 1 specification is documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.