The Filter,radio Frequency Interfere, cataloged under National Stock Number 5915-01-691-2352, is classified within Federal Supply Class 5915 (Filters and Networks) of the Electrical and Electronic Equipment Components group. The manufacturer of record is K&l Microwave Llc. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Filter,radio Frequency Interfere |
| FSC / FSG | 5915 — Filters and Networks (FSG 59) |
| Manufacturers | K&l Microwave Llc (CAGE 50140); Smiths Interconnect Americas, Inc. (CAGE 29971) |
| Parameter | Value |
|---|---|
| NSN | 5915-01-691-2352 |
| Primary Part Number | 4SFB-3100/3500-PX |
| Item Name | Filter,radio Frequency Interfere |
| FSC / FSG | 5915 / 59 — Filters and Networks |
| Manufacturer | K&l Microwave Llc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 4SFB-3100/3500-PX PRIMARY | K&l Microwave Llc (USA) |
| 4IFA-3100/3500-MP PRIMARY | Smiths Interconnect Americas, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 77A587272 | D/9 Drawing number reference only Lockheed Martin Corporation Div Rms |
| 77A587272P1 | 7/2 Vendor item drawing reference Lockheed Martin Corporation Div Rms |
NSN 5915-01-691-2352 is a Filter,radio Frequency Interfere, manufactured by K&l Microwave Llc, classified under FSC 5915, Filters and Networks. Status: active.
NSN 5915-01-691-2352 has 2 manufacturer part numbers on file: 4SFB-3100/3500-PX (K&l Microwave Llc), 4IFA-3100/3500-MP (Smiths Interconnect Americas, Inc.).
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 5915-01-691-2352 has DEMIL Code Q. 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.