The Attenuator,variable, cataloged under National Stock Number 5985-00-259-3939, is classified within Federal Supply Class 5985 (Antennas, Waveguides, and Related Equipment) of the Electrical and Electronic Equipment Components group. Government technical data includes 24 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-259-3939 |
| Item Name | Attenuator,variable |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Status | ACTIVE |
| Impedance Rating in Ohms | 50.0 INPUT-OUTPUT |
| Mounting Facility Type and Quantity | 2 BRACKET(S) AND 4 UNTHREADED HOLE(S) |
| Frequency Range | 1.000 MEGAHERTZ MINIMUM AND 20.000 MEGAHERTZ MAXIMUM |
| Body Style | COAXIAL TYPE |
| Mounting Facility Pattern | FOUR POSITION RECTANGULAR |
| Adjustment Device Type and Quantity | 2 SLOTTED SCREW |
| Precious Material | SILVER |
| Overall Attenuation Range in Decibels | +0.0 TO 100.0 |
| Mounting Facility Screw Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Overall Attenuation Accuracy in Decibels | -2.00 TO 2.00 |
| Scale Linearity | LINEAR |
| Attenuation Per Step in Decibels | 20.0 |
| Attenuation Variation Method | STEPPED |
| Center to Center Distance Between Mounting Facilities Parallel to Height | 2.000 INCHES NOMINAL IN |
| Mounting Thread Quantity | 32 PER INCH |
| Body Material | ALUMINUM |
| Scale Division Quantity | 5 |
| Mounting Facility Nominal Screw Thread Diameter | 0.138 INCHES IN |
| Operating Temp Range | -4.0 TO 125.0 FAHRENHEIT DEGF |
| Center to Center Distance Between Mounting Facilities Parallel to Width | 2.000 INCHES NOMINAL IN |
| Application Design | TRANSMISSION LINE |
| Terminal Type and Quantity | 3 TAB, SOLDER LUG |
| Power Rating | 1.0 WATTS AVERAGE |
| Step Position Quantity | 5 |
| 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 |
|---|---|
| SCB72791 | 3/2 Design control — primary reference U.S. Government activity |
| 1C12558 | 5/9 Secondary reference A R F Products Inc |
NSN 5985-00-259-3939 is a Attenuator,variable, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
Key specifications for 5985-00-259-3939: Impedance Rating in Ohms: 50.0 INPUT-OUTPUT; Mounting Facility Type and Quantity: 2 BRACKET(S) AND 4 UNTHREADED HOLE(S); Overall Height: 2.500 INCHES NOMINAL IN; Frequency Range: 1.000 MEGAHERTZ MINIMUM AND 20.000 MEGAHERTZ MAXIMUM. 24 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.