The Filter,radio Frequency Interfere, cataloged under National Stock Number 5915-01-084-2965, 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 18 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5915-01-084-2965 |
| Primary Part Number | 51-311-321 |
| 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 |
| Precious Material | SILVER |
| 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 | 0.410 INCHES MAXIMUM IN |
| Source Impedance Rating Per Function | 50.0 OHMS BLANK LOCATION NOT OTHERWISE SPECIFIED |
| Style Designator | ROUND TERMINAL/TERMINALS ON OPPOSITE SURFACES |
| Mounting Facility Screw Thread Series Designator | UNF |
| Nominal Thread Size | 0.250 INCHES IN |
| Body Material | METAL |
| Body Length | 0.633 INCHES MAXIMUM IN |
| Operating Voltage Rating and Type Per Function | 150.0 VOLTS DC BLANK LOCATION NOT OTHERWISE SPECIFIED |
| Principal Circuitry Type Per Function | INDUCTANCE-CAPACITANCE BLANK LOCATION NOT OTHERWISE SPECIFIED |
| Operating Current Rating Per Function in Amps | 3.0 BLANK LOCATION NOT OTHERWISE SPECIFIED |
| Precious Material and Location | CASE SILVER |
| Operating Temp Range | -55.0 TO 85.0 CELSIUS DEGC |
| Load Impedance Per Function | 50.0 OHMS BLANK LOCATION NOT OTHERWISE SPECIFIED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 51-311-321 PRIMARY | Spectrum Control, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 51-311-321 | 5/9 Secondary reference Spectrum Control Inc |
| FC2493 | 5/9 Secondary reference Fil-Coil International Llc |
NSN 5915-01-084-2965 is a Filter,radio Frequency Interfere, manufactured by Spectrum Control, Inc., classified under FSC 5915, Filters and Networks. Status: active.
NSN 5915-01-084-2965 has 1 manufacturer part number on file: 51-311-321 (Spectrum Control, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 5940-01-706-8552. Verify interchangeability with system specifications before substitution.
Key specifications for 51-311-321: Mounting Facility Type and Quantity: 1 THREADED BUSHING LOCATION NOT OTHERWISE SPECIFIED; Inclosure Type: ENCASED; Precious Material: SILVER; Functional Terminal Type and Quantity: 1 TAB, SOLDER LUG INPUT FIRST FUNCTION. 18 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.
NSN 5915-01-084-2965 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.