The Attenuator,fixed, cataloged under National Stock Number 5985-01-286-2870, 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 Bae Systems Maritime Services Limited. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-286-2870 |
| Primary Part Number | 43319-124-00-4 |
| Item Name | Attenuator,fixed |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Bae Systems Maritime Services Limited |
| Status | ACTIVE |
| Frequency Range | 0.000 HERTZ MINIMUM AND 18.000 GIGAHERTZ MAXIMUM |
| Body Style | ROUND, TERMINAL/TERMINALS IN OPPOSITE SURFACE |
| Overall Diameter | 0.317 INCHES MAXIMUM IN |
| Voltage Standing Wave Ratio | 1.10 AND 1.15 AND 1.20 AND 1.25 AND 1.35 |
| Input Impedance Rating in Ohms | 50.0 |
| Mounting Method | CONNECTOR |
| Rf Signal Attenuation in Decibels | 10.0 |
| Attenuation Accuracy in Decibels | -0.20 TO 0.20 |
| Specification/standard Data | 81349-MIL-A-3933/25 GOVERNMENT SPECIFICATION |
| Connection Type Per Function | FEMALE INPUT AND MALE OUTPUT |
| Operating Temp Range | -55.0 TO 125.0 CELSIUS DEGC |
| Voltage Standing Wave Ratio Frequency Range | +0.0 TO 2.0 GIGAHERTZ AND +2.0 TO 4.0 GIGAHERTZ AND +4.0 TO 8.0 GIGAHERTZ AND +8.0 TO 12.4 GIGAHERTZ AND +12.4 TO 18.0 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 | COPPER ALLOY BODY |
| Power Rating | 2.0 WATTS AVERAGE AND 500.0 KILOWATTS 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 A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 43319-124-00-4 | Bae Systems Maritime Services Limited (GBR) |
| Reference | Meaning |
|---|---|
| 43319-124-00-4 | 5/9 Secondary reference British Aerospace Defence Systems Ltd T/a Bae Systems |
| MIL-A-3933/25 | 4/1 Identification reference U.S. Government activity |
| M3933/25-78 | 2/2 Government specification standardization U.S. Government activity |
NSN 5985-01-286-2870 is a Attenuator,fixed, manufactured by Bae Systems Maritime Services Limited, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-286-2870 has 1 manufacturer part number on file: 43319-124-00-4 (Bae Systems Maritime Services Limited).
Key specifications for 43319-124-00-4: Frequency Range: 0.000 HERTZ MINIMUM AND 18.000 GIGAHERTZ MAXIMUM; Body Style: ROUND, TERMINAL/TERMINALS IN OPPOSITE SURFACE; Overall Diameter: 0.317 INCHES MAXIMUM IN; Voltage Standing Wave Ratio: 1.10 AND 1.15 AND 1.20 AND 1.25 AND 1.35. 19 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.