The Attenuator,fixed, cataloged under National Stock Number 5985-00-666-1381, is classified within Federal Supply Class 5985 (Antennas, Waveguides, and Related Equipment) of the Electrical and Electronic Equipment Components group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-666-1381 |
| Item Name | Attenuator,fixed |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Status | ACTIVE |
| Frequency Range | 0.000 HERTZ MINIMUM AND 50.000 MEGAHERTZ MAXIMUM |
| Input Impedance Rating in Ohms | 50.0 |
| Mounting Method | TERMINAL |
| Rf Signal Attenuation in Decibels | 14.0 |
| Attenuation Accuracy in Decibels | -0.28 TO 0.28 |
| Schematic Diagram Designator | UNBALANCED "PI" |
| Application Design | TRANSMISSION LINE |
| Power Rating | 250.0 MILLIWATTS 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 |
| Reference | Meaning |
|---|---|
| 107C663ISSUEA | 5/2 Secondary reference U.S. Government activity |
| SCC104613 | 5/2 Secondary reference U.S. Government activity |
| 107-C-663 | C/1 Advisory reference — outside the item-of-supply concept Apollo Audio-Visual |
| CN223URM25D | 3/2 Design control — primary reference U.S. Government activity |
NSN 5985-00-666-1381 is a Attenuator,fixed, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
Key specifications for 5985-00-666-1381: Overall Height: 1.000 INCHES NOMINAL IN; Frequency Range: 0.000 HERTZ MINIMUM AND 50.000 MEGAHERTZ MAXIMUM; Input Impedance Rating in Ohms: 50.0; Mounting Method: TERMINAL. 10 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.