The Attenuator,fixed, cataloged under National Stock Number 5985-00-884-9874, 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 Us Army Aviation and Missile Command. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-884-9874 |
| Primary Part Number | 9975555-2 |
| Item Name | Attenuator,fixed |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Us Army Aviation and Missile Command |
| Status | ACTIVE |
| Overall Diameter | 0.828 INCHES NOMINAL IN |
| Input Impedance Rating in Ohms | 50.0 |
| Mounting Method | TERMINAL |
| Rf Signal Attenuation in Decibels | 16.0 |
| Schematic Diagram Designator | "T" |
| Application Design | TRANSMISSION LINE |
| Power Rating | 1.0 WATTS AVERAGE |
| Terminal Type and Quantity | 2 CONNECTOR |
| 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 |
| Part Number | Manufacturer |
|---|---|
| AH-C31 | Microlab/fxr Llc (USA) |
| 9975555-2 PRIMARY | Us Army Aviation and Missile Command (USA) |
| Reference | Meaning |
|---|---|
| 9975555-2 | 5/9 Secondary reference Lucent Technologies Inc Advanced Technology Systems |
| AT50-16 | 5/9 Secondary reference General Electric Co Large Steam Turbine-Generator Dept |
NSN 5985-00-884-9874 is a Attenuator,fixed, manufactured by Us Army Aviation and Missile Command, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-884-9874 has 2 manufacturer part numbers on file: AH-C31 (Microlab/fxr Llc), 9975555-2 (Us Army Aviation and Missile Command).
Key specifications for 9975555-2: Overall Diameter: 0.828 INCHES NOMINAL IN; Input Impedance Rating in Ohms: 50.0; Mounting Method: TERMINAL; Rf Signal Attenuation in Decibels: 16.0. 9 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.