The Attenuator,fixed, cataloged under National Stock Number 5985-00-840-3418, is classified within Federal Supply Class 5985 (Antennas, Waveguides, and Related Equipment) of the Electrical and Electronic Equipment Components group. Government technical data includes 17 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5985-00-840-3418 |
| Item Name | Attenuator,fixed |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Status | ACTIVE |
| Frequency Range | 1.000 GIGAHERTZ MINIMUM AND 10.000 GIGAHERTZ MAXIMUM |
| Body Style | ROUND, TERMINAL/TERMINALS IN OPPOSITE SURFACE |
| Attenuation Accuracy Reference Frequency | 4.0 GIGAHERTZ |
| Overall Diameter | 0.781 INCHES NOMINAL IN |
| Voltage Standing Wave Ratio | 1.25 |
| Input Impedance Rating in Ohms | 50.0 |
| Mounting Method | CONNECTOR |
| Rf Signal Attenuation in Decibels | 6.0 |
| Attenuation Accuracy in Decibels | -0.10 TO 0.10 |
| Voltage Standing Wave Ratio Frequency Range | +1.0 TO 10.0 GIGAHERTZ |
| Test Data Document | 12436-810001-565 DRAWING (THIS IS THE BASIC GOVERNING DRAWING, SUCH AS A CONTRACTOR DRAWING, ORIGINAL EQUIPMENT MANUFACTURER DRAWING, ETC.; EXCLUDES ANY SPECIFICATION, STANDARD OR OTHER DOCUMENT THAT MAY BE REFERENCED IN A BASIC GOVERNING DRAWING) |
| Application Design | TRANSMISSION LINE |
| Material | STEEL CORROSION RESISTING BODY |
| Power Rating | 3.0 WATTS AVERAGE |
| Terminal Type and Quantity | 2 CONNECTOR |
| Output Impedance Rating in Ohms | 50.0 |
| Coaxial Connector Series Designation | N |
| 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 |
|---|---|
| 810001-565 | 7/2 Vendor item drawing reference Bae Systems Information and Electronic Systems Integration Inc. Div Bae Systems Information & Electronic Systems Integration Inc |
| 2838-2 | 3/9 Design control — primary reference U.S. Government activity |
| 530A-6 | 5/9 Secondary reference U.S. Government activity |
| A89-593 | 5/1 Secondary reference U.S. Government activity |
NSN 5985-00-840-3418 is a Attenuator,fixed, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 4820-01-087-4576. Verify interchangeability with system specifications before substitution.
Key specifications for 5985-00-840-3418: Frequency Range: 1.000 GIGAHERTZ MINIMUM AND 10.000 GIGAHERTZ MAXIMUM; Body Style: ROUND, TERMINAL/TERMINALS IN OPPOSITE SURFACE; Attenuation Accuracy Reference Frequency: 4.0 GIGAHERTZ; Overall Diameter: 0.781 INCHES NOMINAL IN. 17 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.