The Attenuator,variable, cataloged under National Stock Number 5985-01-164-7405, 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 Aeromaritime Systembau Gmbh. Government technical data includes 12 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-164-7405 |
| Primary Part Number | 179.640-8 |
| Item Name | Attenuator,variable |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Aeromaritime Systembau Gmbh |
| Status | ACTIVE |
| Impedance Rating in Ohms | 50.0 INPUT-OUTPUT |
| Frequency Range | 0.000 GIGAHERTZ MINIMUM AND 4.200 GIGAHERTZ MAXIMUM |
| Body Style | COAXIAL TYPE |
| Adjustment Device Type and Quantity | 1 KNOB |
| Overall Attenuation Range in Decibels | +0.0 TO 20.0 |
| Voltage Standing Wave Ratio | 1.15 |
| Overall Attenuation Accuracy in Decibels | -0.20 TO 0.20 |
| Attenuation Variation Method | CONTINUOUS |
| Application Design | TRANSMISSION LINE |
| Terminal Type and Quantity | 2 CONNECTOR, COAXIAL, FEMALE |
| Power Rating | 1.0 WATTS AVERAGE AND 500.0 WATTS PEAK |
| Coaxial Connector Series Designation | WPM |
| 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 |
|---|---|
| 179.640-8 | Aeromaritime Systembau Gmbh (DEU) |
| Reference | Meaning |
|---|---|
| MODELL 5431 | 5/9 Secondary reference Aeromaritime Systembau Gmbh |
| 910-20-11 | 5/9 Secondary reference Aeromaritime Systembau Gmbh |
| 910-20-11 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5985-01-164-7405 is a Attenuator,variable, manufactured by Aeromaritime Systembau Gmbh, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-164-7405 has 1 manufacturer part number on file: 179.640-8 (Aeromaritime Systembau Gmbh).
Key specifications for 179.640-8: Impedance Rating in Ohms: 50.0 INPUT-OUTPUT; Overall Height: 5.160 INCHES NOMINAL IN; Frequency Range: 0.000 GIGAHERTZ MINIMUM AND 4.200 GIGAHERTZ MAXIMUM; Body Style: COAXIAL TYPE. 12 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 5985-01-164-7405 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.