The Attenuator,variable, cataloged under National Stock Number 5985-01-032-4197, 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 Microlab/fxr Llc. Government technical data includes 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-032-4197 |
| Primary Part Number | SM-B-651390 |
| Item Name | Attenuator,variable |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Microlab/fxr Llc |
| Status | ACTIVE |
| Shaft Type | ROUND, FLATTED |
| Frequency Range | 4.500 GIGAHERTZ MINIMUM AND 5.000 GIGAHERTZ MAXIMUM |
| Shaft Diameter | 0.190 INCHES NOMINAL IN |
| Body Style | COAXIAL TYPE |
| Adjustment Device Type and Quantity | 1 SHAFT |
| First Flat Length | 0.400 INCHES NOMINAL IN |
| Shaft Length | 0.800 INCHES NOMINAL IN |
| Operating Temp Range | -25.0 TO 144.0 FAHRENHEIT DEGF |
| Terminal Type and Quantity | 1 CONNECTOR, COAXIAL, MALE AND 1 CONNECTOR, COAXIAL, FEMALE |
| Power Rating | 1.4 MILLIWATTS AVERAGE |
| 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 |
| Part Number | Manufacturer |
|---|---|
| SM-B-651390 PRIMARY | Microlab/fxr Llc (USA) |
| Reference | Meaning |
|---|---|
| SM-B-651390 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 5985-01-032-4197 is a Attenuator,variable, manufactured by Microlab/fxr Llc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-032-4197 has 1 manufacturer part number on file: SM-B-651390 (Microlab/fxr Llc).
Key specifications for SM-B-651390: Shaft Type: ROUND, FLATTED; Frequency Range: 4.500 GIGAHERTZ MINIMUM AND 5.000 GIGAHERTZ MAXIMUM; Shaft Diameter: 0.190 INCHES NOMINAL IN; Body Style: COAXIAL TYPE. 11 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.