The Headset-Microphone, cataloged under National Stock Number 5965-01-446-5940, is classified within Federal Supply Class 5965 (Headsets, Handsets, Microphones and Speakers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Unex a Dynatech Co. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5965-01-446-5940 |
| Primary Part Number | OPX-1N |
| Item Name | Headset-Microphone |
| FSC / FSG | 5965 / 59 — Headsets, Handsets, Microphones and Speakers |
| Manufacturer | Unex a Dynatech Co |
| 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 |
|---|---|
| EXPRESS OPX-1N | Unex a Dynatech Co (USA) |
| OPX-1N PRIMARY | Unex a Dynatech Co (USA) |
| Reference | Meaning |
|---|---|
| EXPRESS | 5/1 Secondary reference Unex a Dynatech Co |
NSN 5965-01-446-5940 is a Headset-Microphone, manufactured by Unex a Dynatech Co, classified under FSC 5965, Headsets, Handsets, Microphones and Speakers. Status: active.
NSN 5965-01-446-5940 has 2 manufacturer part numbers on file: EXPRESS OPX-1N (Unex a Dynatech Co), OPX-1N (Unex a Dynatech Co).
1 possible match (shared part number, not a government interchangeability claim): 5965-01-446-5941. Verify interchangeability with system specifications before substitution.
Key specifications for OPX-1N: Special Features: INCLUDES A 5 FOOT STRAIGHT CORD AND A 2.5 MM PLUG, MAY BE USED WITH SOME CELLULAR OR PORTABLE TELEPHONES, INCLUDES A NOISE CANCELLING MICROPHONE AND A HEADBAND MM. 0 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.