The Filter,radio Frequency Interfere, cataloged under National Stock Number 5915-01-681-1406, 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. Div Api Technologies - Eis/wesson. Government technical data includes 15 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5915-01-681-1406 |
| Primary Part Number | 51-321-305 |
| Item Name | Filter,radio Frequency Interfere |
| FSC / FSG | 5915 / 59 — Filters and Networks |
| Manufacturer | Spectrum Control, Inc. Div Api Technologies - Eis/wesson |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 2 SLOT ALL FUNCTIONS |
| Inclosure Type | ENCASED |
| Power Line Frequency Rating Per Function in Hertz | 400.0 SINGLE LOW PASS ALL FUNCTIONS |
| Functional Terminal Type and Quantity | 2 TAB, SOLDER LUG VOLTAGE ALL FUNCTIONS |
| Body Outside Diameter | 0.687 INCHES NOMINAL IN |
| Source Impedance Rating Per Function | 0.006 OHMS SINGLE LOW PASS ALL FUNCTIONS |
| Maximum Voltage Drop Per Function | 0.03 VOLTS DC SINGLE LOW PASS ALL FUNCTIONS |
| Style Designator | ROUND TERMINAL/TERMINALS ON OPPOSITE SURFACES |
| Mounting Facility Screw Thread Series Designator | UNF |
| Nominal Thread Size | 0.3125 INCHES IN |
| Operating Voltage Rating and Type Per Function | 125.0 VOLTS AC SINGLE LOW PASS ALL FUNCTIONS |
| Operating Voltage Rating and Type Per Function | 200.0 VOLTS DC SINGLE LOW PASS FIRST FUNCTION |
| Operating Voltage Rating and Type Per Function | 250.0 VOLTS DC SINGLE LOW PASS SECOND FUNCTION |
| Operating Current Rating Per Function in Amps | 5.0 SINGLE LOW PASS ALL FUNCTIONS |
| Mounting Slot Width | 0.110 INCHES NOMINAL IN |
| 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 |
|---|---|
| 51-321-305 PRIMARY | Spectrum Control, Inc. Div Api Technologies - Eis/wesson (USA) |
NSN 5915-01-681-1406 is a Filter,radio Frequency Interfere, manufactured by Spectrum Control, Inc. Div Api Technologies - Eis/wesson, classified under FSC 5915, Filters and Networks. Status: active.
NSN 5915-01-681-1406 has 1 manufacturer part number on file: 51-321-305 (Spectrum Control, Inc. Div Api Technologies - Eis/wesson).
Key specifications for 51-321-305: Mounting Facility Type and Quantity: 2 SLOT ALL FUNCTIONS; Inclosure Type: ENCASED; Power Line Frequency Rating Per Function in Hertz: 400.0 SINGLE LOW PASS ALL FUNCTIONS; Functional Terminal Type and Quantity: 2 TAB, SOLDER LUG VOLTAGE ALL FUNCTIONS. 15 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.