The Coupler,transmission Line, cataloged under National Stock Number 5985-01-021-0448, 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 Southwest Research Institute. Government technical data includes 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-021-0448 |
| Primary Part Number | 4010-1865 |
| Item Name | Coupler,transmission Line |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Southwest Research Institute |
| Status | ACTIVE |
| Input Impedance Rating in Ohms | 50.0 |
| Unit Type | COAXIAL LINE |
| Mounting Configuration | TWO 0.140 IN. DIA MTG HOLES SPACED ON 1.438 IN. MTG CENTERS IN |
| Output Impedance Rating in Ohms | 200.0 |
| 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 |
|---|---|
| 4010-1865 PRIMARY | Southwest Research Institute (USA) |
| Reference | Meaning |
|---|---|
| 4010-1865-11 | C/1 Advisory reference — outside the item-of-supply concept Southwest Research Institute |
NSN 5985-01-021-0448 is a Coupler,transmission Line, manufactured by Southwest Research Institute, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-021-0448 has 1 manufacturer part number on file: 4010-1865 (Southwest Research Institute).
Key specifications for 4010-1865: Overall Height: 0.844 INCHES MINIMUM AND 0.874 INCHES MAXIMUM IN; Input Impedance Rating in Ohms: 50.0; Overall Length: 1.711 INCHES MINIMUM AND 1.727 INCHES MAXIMUM IN; Overall Width: 1.880 INCHES NOMINAL IN. 4 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 5985-01-021-0448 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.