The Attenuator,variable, cataloged under National Stock Number 5985-00-202-0258, is classified within Federal Supply Class 5985 (Antennas, Waveguides, and Related Equipment) of the Electrical and Electronic Equipment Components group. Government technical data includes 25 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5985-00-202-0258 |
| Item Name | Attenuator,variable |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Status | ACTIVE |
| Shaft Type | ROUND |
| Impedance Rating in Ohms | 600.0 INPUT-OUTPUT |
| Mounting Facility Type and Quantity | 2 THREADED HOLE(S) |
| Frequency Range | 0.000 KILOHERTZ MINIMUM AND 4.000 KILOHERTZ MAXIMUM |
| Shaft Diameter | 0.250 INCHES NOMINAL IN |
| Body Style | CYLINDRICAL W/REAR TERMINALS |
| Mounting Facility Pattern | TWO POSITION IN-LINE |
| Adjustment Device Type and Quantity | 1 SHAFT |
| Overall Diameter | 2.750 INCHES NOMINAL IN |
| Overall Attenuation Range in Decibels | +0.0 TO 40.0 |
| Mounting Facility Screw Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Overall Attenuation Accuracy in Decibels | -1.00 TO 1.00 |
| Attenuation Per Step in Decibels | 2.0 |
| Attenuation Variation Method | STEPPED |
| Distance Between Mounting Facility Centers | 1.500 INCHES NOMINAL IN |
| Schematic Diagram Designator | C |
| Mounting Thread Quantity | 32 PER INCH |
| Shaft Length | 0.875 INCHES NOMINAL IN |
| Body Length | 3.000 INCHES NOMINAL IN |
| Mounting Facility Nominal Screw Thread Diameter | 0.164 INCHES IN |
| Operating Temp Range | -55.0 TO 125.0 CELSIUS DEGC |
| Application Design | AUDIO |
| Terminal Type and Quantity | 3 TAB, SOLDER LUG |
| Power Rating | 500.0 MILLIWATTS AVERAGE |
| Step Position Quantity | 23 |
| 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 |
|---|---|
| 2Z394-78 | 5/2 Secondary reference U.S. Government activity |
| B2678 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5985-00-202-0258 is a Attenuator,variable, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 7025-01-538-8673. Verify interchangeability with system specifications before substitution.
Key specifications for 5985-00-202-0258: Shaft Type: ROUND; Impedance Rating in Ohms: 600.0 INPUT-OUTPUT; Mounting Facility Type and Quantity: 2 THREADED HOLE(S); Frequency Range: 0.000 KILOHERTZ MINIMUM AND 4.000 KILOHERTZ MAXIMUM. 25 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.