The Attenuator,fixed, cataloged under National Stock Number 5985-01-381-8521, 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17 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5985-01-381-8521 |
| Item Name | Attenuator,fixed |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Status | ACTIVE |
| FSC Application Data | ANTENNAS, WAVEGUIDES, AND RELATED EQUIPMENT |
| Frequency Range | 0.000 HERTZ MINIMUM AND 40.000 GIGAHERTZ MAXIMUM |
| Body Style | ROUND, TERMINAL/TERMINALS IN OPPOSITE SURFACE |
| Overall Diameter | 0.390 INCHES MAXIMUM IN |
| Voltage Standing Wave Ratio | 1.40 |
| Input Impedance Rating in Ohms | 50.0 |
| Mounting Method | CONNECTOR |
| Rf Signal Attenuation in Decibels | 3.0 |
| Attenuation Accuracy in Decibels | -0.80 TO 0.80 |
| Connection Type Per Function | FEMALE INPUT AND MALE OUTPUT |
| Operating Temp Range | +0.0 TO 85.0 CELSIUS DEGC |
| Voltage Standing Wave Ratio Frequency Range | +0.0 TO 40.0 GIGAHERTZ |
| Application Design | TRANSMISSION LINE |
| Power Rating | 2.0 WATTS AVERAGE AND 200.0 WATTS PEAK |
| Terminal Type and Quantity | 2 CONNECTOR |
| Output Impedance Rating in Ohms | 50.0 |
| Coaxial Connector Series Designation | SMA |
| 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 |
| Reference | Meaning |
|---|---|
| 4768-3 | 5/2 Secondary reference U.S. Government activity |
| C20340-2 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5985-01-381-8521 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): 5310-01-439-2199. Verify interchangeability with system specifications before substitution.
Key specifications for 5985-01-381-8521: FSC Application Data: ANTENNAS, WAVEGUIDES, AND RELATED EQUIPMENT; Frequency Range: 0.000 HERTZ MINIMUM AND 40.000 GIGAHERTZ MAXIMUM; Body Style: ROUND, TERMINAL/TERMINALS IN OPPOSITE SURFACE; Overall Diameter: 0.390 INCHES MAXIMUM 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.
NSN 5985-01-381-8521 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.