The Coupler,transmission Line, cataloged under National Stock Number 5985-01-418-6178, is classified within Federal Supply Class 5985 (Antennas, Waveguides, and Related Equipment) of the Electrical and Electronic Equipment Components group. Government technical data includes 7 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5985-01-418-6178 |
| Item Name | Coupler,transmission Line |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Status | ACTIVE |
| Overall Diameter | 0.165 INCHES NOMINAL IN |
| Input Impedance Rating in Ohms | 50.0 |
| Radio Frequency Rating | 960.000 MEGAHERTZ MINIMUM AND 1200.000 MEGAHERTZ MAXIMUM |
| Specification/standard Data | 57057-8822400028 MANUFACTURERS SPECIFICATION CONTROL |
| Unit Type | COAXIAL LINE |
| Material | COPPER AND PLASTIC |
| Output Impedance Rating in Ohms | 50.0 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| FW4708-1 | 5/9 Secondary reference Spectrum Microwave, Inc. |
| 8822400028-1 | 3/9 Design control — primary reference Navcom Defense Electronics, Inc. |
| 8822400028-1 | 5/9 Secondary reference Spectrum Microwave, Inc. |
NSN 5985-01-418-6178 is a Coupler,transmission Line, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5985-01-418-6180. Verify interchangeability with system specifications before substitution.
Key specifications for 5985-01-418-6178: Overall Diameter: 0.165 INCHES NOMINAL IN; Input Impedance Rating in Ohms: 50.0; Radio Frequency Rating: 960.000 MEGAHERTZ MINIMUM AND 1200.000 MEGAHERTZ MAXIMUM; Overall Length: 2.250 INCHES NOMINAL IN. 7 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.