The Filter,radio Frequency Interfere, cataloged under National Stock Number 5915-00-524-1850, 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 20 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5915-00-524-1850 |
| Primary Part Number | 51-311-391 |
| Item Name | Filter,radio Frequency Interfere |
| FSC / FSG | 5915 / 59 — Filters and Networks |
| Manufacturer | Spectrum Control, Inc. |
| Status | ACTIVE |
| Maximum Dielectric Withstanding DC Voltage | 300.0 VOLTS AT SEA LEVEL |
| Mounting Facility Type and Quantity | 1 THREADED BUSHING LOCATION NOT OTHERWISE SPECIFIED |
| Inclosure Type | ENCASED |
| Power Line Frequency Rating Per Function in Hertz | 400.0 BLANK LOCATION NOT OTHERWISE SPECIFIED |
| 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 | 0.400 INCHES NOMINAL IN |
| Source Impedance Rating Per Function | 50.0 OHMS BLANK LOCATION NOT OTHERWISE SPECIFIED |
| Vibration Resistance Range in Hertz | +10.0 TO 2000.0 |
| 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 | 0.540 INCHES MAXIMUM IN |
| Operating Voltage Rating and Type Per Function | 125.0 VOLTS AC BLANK AND 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 | 0.3 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 D — Destroy Item |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 1JX3702 | Sprague Electric Co World Hqs (USA) |
| 561316 | Lockheed Martin Corporation Div Rms - Mitchel Field (USA) |
| RF5831-33 | Ems Development Corporation Dba Ems Development Corp (USA) |
| 51-311-391 PRIMARY | Spectrum Control, Inc. (USA) |
| SF-227 | Passive Components Inc (USA) |
| Reference | Meaning |
|---|---|
| PA-9A12F-1D0T | 5/9 Secondary reference U.S. Government activity |
| 536499-33 | 7/2 Vendor item drawing reference U.S. Government activity |
| RF05831-33 | 5/9 Secondary reference Ems Development Corporation Dba Ems Development Corp |
NSN 5915-00-524-1850 is a Filter,radio Frequency Interfere, manufactured by Spectrum Control, Inc., classified under FSC 5915, Filters and Networks. Status: active.
NSN 5915-00-524-1850 has 5 manufacturer part numbers on file: 1JX3702 (Sprague Electric Co World Hqs), 561316 (Lockheed Martin Corporation Div Rms - Mitchel Field), RF5831-33 (Ems Development Corporation Dba Ems Development Corp), 51-311-391 (Spectrum Control, Inc.), SF-227 (Passive Components Inc).
1 possible match (shared part number, not a government interchangeability claim): 5950-00-591-9355. Verify interchangeability with system specifications before substitution.
Key specifications for 51-311-391: Maximum Dielectric Withstanding DC Voltage: 300.0 VOLTS AT SEA LEVEL; Mounting Facility Type and Quantity: 1 THREADED BUSHING LOCATION NOT OTHERWISE SPECIFIED; Inclosure Type: ENCASED; Power Line Frequency Rating Per Function in Hertz: 400.0 BLANK LOCATION NOT OTHERWISE SPECIFIED. 20 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 5915-00-524-1850 has DEMIL Code D. 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.