The Adapter,diplexer, cataloged under National Stock Number 5985-01-604-2809, is classified within Federal Supply Class 5985 (Antennas, Waveguides, and Related Equipment) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Infinite Electronics International, Inc.. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Adapter,diplexer |
| FSC / FSG | 5985 — Antennas, Waveguides, and Related Equipment (FSG 59) |
| Manufacturers | Infinite Electronics International, Inc. (CAGE 3FKR5) |
| Parameter | Value |
|---|---|
| NSN | 5985-01-604-2809 |
| Primary Part Number | FMAD1240 |
| Item Name | Adapter,diplexer |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Infinite Electronics International, Inc. |
| Status | ACTIVE |
| 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 |
|---|---|
| FMAD1240 | Infinite Electronics International, Inc. (USA) |
| Reference | Meaning |
|---|---|
| SM4226 | 3/9 Design control — primary reference Infinite Electronics International, Inc. |
| 405-575-006 SH 16 | D/9 Drawing number reference only U.S. Government activity |
NSN 5985-01-604-2809 is a Adapter,diplexer, manufactured by Infinite Electronics International, Inc., classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-604-2809 has 1 manufacturer part number on file: FMAD1240 (Infinite Electronics International, Inc.).
2 possible matches (shared part number, not a government interchangeability claim): 5985-01-604-2818, 4920-01-621-0076. Verify interchangeability with system specifications before substitution.
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.