The Filter,radio Frequency Interfere, cataloged under National Stock Number 5915-01-085-5820, is classified within Federal Supply Class 5915 (Filters and Networks) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Spectrum Control, Inc.. Government technical data includes 16 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5915-01-085-5820 |
| Primary Part Number | 51-321-348 |
| Item Name | Filter,radio Frequency Interfere |
| FSC / FSG | 5915 / 59 — Filters and Networks |
| Manufacturer | Spectrum Control, Inc. |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 1 THREADED BUSHING LOCATION NOT OTHERWISE SPECIFIED |
| Inclosure Type | ENCASED |
| Functional Terminal Type and Quantity | 1 TAB, SOLDER LUG INPUT FIRST FUNCTION |
| Functional Terminal Type and Quantity | 1 TAB, SOLDER LUG OUTPUT SECOND FUNCTION |
| Body Outside Diameter | 0.702 INCHES MAXIMUM IN |
| Source Impedance Rating Per Function | 50.0 OHMS BLANK LOCATION NOT OTHERWISE SPECIFIED |
| Maximum Voltage Drop Per Function | 0.3 VOLTS DC BLANK LOCATION NOT OTHERWISE SPECIFIED |
| Style Designator | ROUND TERMINAL/TERMINALS ON OPPOSITE SURFACES |
| Mounting Facility Screw Thread Series Designator | UNF |
| Nominal Thread Size | 0.312 INCHES IN |
| Body Length | 0.886 INCHES MAXIMUM IN |
| Operating Voltage Rating and Type Per Function | 50.0 VOLTS DC BLANK LOCATION NOT OTHERWISE SPECIFIED |
| Operating Current Rating Per Function in Amps | 3.0 BLANK LOCATION NOT OTHERWISE SPECIFIED |
| Operating Temp Range | -55.0 TO 125.0 CELSIUS DEGC |
| Maximum Temp Rise | 25.0 CELSIUS DEGC |
| Load Impedance Per Function | 50.0 OHMS BLANK LOCATION NOT OTHERWISE SPECIFIED |
| 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 |
|---|---|
| 51-321-348 | Spectrum Control, Inc. (USA) |
| 581R992H03 | Sprague Electric Co World Hqs (USA) |
| Reference | Meaning |
|---|---|
| 581R992H03 | 3/2 Design control — primary reference U.S. Government activity |
| 581R992H03 | 5/9 Secondary reference U.S. Government activity |
| 581R992H03 | 5/9 Secondary reference Spectrum Control Inc |
| 90115111005 | 5/9 Secondary reference Murata Erie North America Inc Divof Murata Erie |
| CSK4427 | 5/9 Secondary reference Murata Erie North America Inc Divof Murata Erie |
| 8633-103-1 | 5/9 Secondary reference Avx Filters |
| 51-321-348 | 5/9 Secondary reference Spectrum Control Inc |
NSN 5915-01-085-5820 is a Filter,radio Frequency Interfere, manufactured by Spectrum Control, Inc., classified under FSC 5915, Filters and Networks. Status: active.
NSN 5915-01-085-5820 has 2 manufacturer part numbers on file: 51-321-348 (Spectrum Control, Inc.), 581R992H03 (Sprague Electric Co World Hqs).
Key specifications for 51-321-348: Mounting Facility Type and Quantity: 1 THREADED BUSHING LOCATION NOT OTHERWISE SPECIFIED; Inclosure Type: ENCASED; Functional Terminal Type and Quantity: 1 TAB, SOLDER LUG INPUT FIRST FUNCTION; Functional Terminal Type and Quantity: 1 TAB, SOLDER LUG OUTPUT SECOND FUNCTION. 16 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.