The Attenuator,fixed, cataloged under National Stock Number 5985-01-249-9705, is classified within Federal Supply Class 5985 (Antennas, Waveguides, and Related Equipment) of the Electrical and Electronic Equipment Components group. Government technical data includes 23 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5985-01-249-9705 |
| Item Name | Attenuator,fixed |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Status | ACTIVE |
| Frequency Range | 0.000 HERTZ MINIMUM AND 4.500 GIGAHERTZ MAXIMUM |
| Body Style | ROUND, TERMINAL/TERMINALS IN OPPOSITE SURFACE |
| Attenuation Accuracy Reference Frequency | 0.0 HERTZ |
| Overall Diameter | 0.625 INCHES MAXIMUM IN |
| Voltage Standing Wave Ratio | 1.10 AND 1.15 AND 1.20 AND 1.25 |
| Input Impedance Rating in Ohms | 50.0 |
| Mounting Method | CONNECTOR |
| Rf Signal Attenuation in Decibels | 1.0 |
| Attenuation Accuracy in Decibels | -0.10 TO 0.10 |
| Specification/standard Data | 81349-MIL-A-3933/19 GOVERNMENT SPECIFICATION |
| Surface Treatment | PASSIVATE TERMINAL |
| Surface Treatment | PASSIVATE BODY |
| Operating Temp Range | -55.0 TO 125.0 CELSIUS DEGC |
| Voltage Standing Wave Ratio Frequency Range | +0.0 TO 1.0 GIGAHERTZ AND +1.0 TO 2.0 GIGAHERTZ AND +2.0 TO 3.0 GIGAHERTZ AND +3.0 TO 4.5 GIGAHERTZ |
| Test Data Document | 81349-MIL-A-3933 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.). |
| Application Design | TRANSMISSION LINE |
| Material | STEEL BODY |
| Material | STEEL TERMINAL |
| Temperature Sensitivity Attenuation in Decibels | 0.0001 |
| Power Rating | 4.0 WATTS AVERAGE AND 0.5 KILOWATTS PEAK |
| Terminal Type and Quantity | 2 CONNECTOR |
| Output Impedance Rating in Ohms | 50.0 |
| Coaxial Connector Series Designation | BNC |
| 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 |
|---|---|
| MIL-A-3933/19 | 5/9 Secondary reference U.S. Government activity |
| M3933/19-01N | 2/2 Government specification standardization U.S. Government activity |
| MIL-DTL-3933/19 | 4/1 Identification reference U.S. Government activity |
| M3933/19-01 | 5/9 Secondary reference U.S. Government activity |
NSN 5985-01-249-9705 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): 5985-01-451-4045. Verify interchangeability with system specifications before substitution.
Key specifications for 5985-01-249-9705: Frequency Range: 0.000 HERTZ MINIMUM AND 4.500 GIGAHERTZ MAXIMUM; Body Style: ROUND, TERMINAL/TERMINALS IN OPPOSITE SURFACE; Attenuation Accuracy Reference Frequency: 0.0 HERTZ; Overall Diameter: 0.625 INCHES MAXIMUM IN. 23 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.