The Switch,interlock, cataloged under National Stock Number 5930-01-541-4681, is classified within Federal Supply Class 5930 (Switches) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Espey Mfg and Electronics Corp. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5930-01-541-4681 |
| Primary Part Number | 90137 |
| Item Name | Switch,interlock |
| FSC / FSG | 5930 / 59 — Switches |
| Manufacturer | Espey Mfg and Electronics Corp |
| Status | ACTIVE |
| 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 |
|---|---|
| 90137 | Espey Mfg and Electronics Corp (USA) |
| Reference | Meaning |
|---|---|
| 90001 ITEM 16 | 5/9 Secondary reference U.S. Government activity |
| 90137 | 3/9 Design control — primary reference U.S. Government activity |
| 90001 ITEM 16 | C/1 Advisory reference — outside the item-of-supply concept Espey Mfg and Electronics Corp |
NSN 5930-01-541-4681 is a Switch,interlock, manufactured by Espey Mfg and Electronics Corp, classified under FSC 5930, Switches. Status: active.
NSN 5930-01-541-4681 has 1 manufacturer part number on file: 90137 (Espey Mfg and Electronics Corp).
1 possible match (shared part number, not a government interchangeability claim): 6550-01-558-2222. Verify interchangeability with system specifications before substitution.
Key specifications for 90137: Part Name Assigned by Controlling Agency: INAVY INTERLOCK, TAP PANEL, SWITCH; End Item Identification: TRANSFORMER, EB-50-P; WSD: SEAWOLF CLASS SSN. 0 specifications are 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.