The Capacitor,fixed,mica Dielectric, cataloged under National Stock Number 5910-00-421-5590, is classified within Federal Supply Class 5910 (Capacitors) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Espey Mfg and Electronics Corp. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government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 | 5910-00-421-5590 |
| Primary Part Number | 51154 |
| Item Name | Capacitor,fixed,mica Dielectric |
| FSC / FSG | 5910 / 59 — Capacitors |
| Manufacturer | Espey Mfg and Electronics Corp |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 4 THREADED MOUNTING HOLES |
| Center to Center Distance Between Terminals Parallel to Width | 1.000 INCHES NOMINAL IN |
| Terminal Diameter | 0.051 INCHES NOMINAL IN |
| Body Style | W/THD MTG HOLE(S)/STUD(S) TERMINALS ON ONE SURFACE |
| Body Width | 2.680 INCHES NOMINAL IN |
| Body Height | 2.310 INCHES NOMINAL IN |
| Schematic Diagram Designator | NO COMMON OR GROUNDED ELECTRODE(S) |
| Body Length | 2.838 INCHES NOMINAL IN |
| Reliability Indicator | NOT ESTABLISHED |
| Terminal Type and Quantity | 2 UNINSULATED WIRE LEAD |
| 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 |
|---|---|
| 51154 | Espey Mfg and Electronics Corp (USA) |
| Reference | Meaning |
|---|---|
| 51154 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5910-00-421-5590 is a Capacitor,fixed,mica Dielectric, manufactured by Espey Mfg and Electronics Corp, classified under FSC 5910, Capacitors. Status: active.
NSN 5910-00-421-5590 has 1 manufacturer part number on file: 51154 (Espey Mfg and Electronics Corp).
5 possible matches (shared part number, not a government interchangeability claim): 2990-00-801-5094, 4720-00-803-8359, 4920-00-838-6299. Verify interchangeability with system specifications before substitution.
Key specifications for 51154: Mounting Facility Type and Quantity: 4 THREADED MOUNTING HOLES; Center to Center Distance Between Terminals Parallel to Width: 1.000 INCHES NOMINAL IN; Terminal Diameter: 0.051 INCHES NOMINAL IN; Body Style: W/THD MTG HOLE(S)/STUD(S) TERMINALS ON ONE SURFACE. 10 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.