The Attenuator,variable, cataloged under National Stock Number 5985-00-256-6392, is classified within Federal Supply Class 5985 (Antennas, Waveguides, and Related Equipment) of the Electrical and Electronic Equipment Components group. Government technical data includes 21 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 8 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-256-6392 |
| Item Name | Attenuator,variable |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Status | ACTIVE |
| Shaft Type | ROUND |
| Bushing Length | 0.375 INCHES NOMINAL IN |
| Impedance Rating in Ohms | 500.0 INPUT-OUTPUT |
| Body Diameter | 1.625 INCHES NOMINAL IN |
| Mounting Facility Type and Quantity | 1 THREADED BUSHING |
| Shaft Diameter | 0.250 INCHES NOMINAL IN |
| Body Style | CYLINDRICAL W/SIDE TERMINALS |
| Adjustment Device Type and Quantity | 2 SHAFT |
| Overall Diameter | 1.594 INCHES NOMINAL IN |
| Overall Attenuation Range in Decibels | +0.0 TO 38.0 |
| Mounting Facility Screw Thread Series Designator | UNEF |
| Overall Attenuation Accuracy in Decibels | -2.85 TO 2.85 |
| Attenuation Variation Method | CONTINUOUS |
| Schematic Diagram Designator | "T" |
| Mounting Thread Quantity | 32 PER INCH |
| Shaft Length | 2.000 INCHES NOMINAL IN |
| Body Length | 1.125 INCHES NOMINAL IN |
| Mounting Facility Nominal Screw Thread Diameter | 0.375 INCHES IN |
| Application Design | AUDIO |
| Terminal Type and Quantity | 4 TAB, SOLDER LUG |
| Power Rating | 4.0 WATTS AVERAGE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| L500 | 3/1 Design control — primary reference Yosemite Investment Inc Dba North American Capacitor Co |
NSN 5985-00-256-6392 is a Attenuator,variable, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
8 possible matches (shared part number, not a government interchangeability claim): 5985-00-644-9008, 8010-00-823-7962, 5836-01-064-4954. Verify interchangeability with system specifications before substitution.
Key specifications for 5985-00-256-6392: Shaft Type: ROUND; Bushing Length: 0.375 INCHES NOMINAL IN; Impedance Rating in Ohms: 500.0 INPUT-OUTPUT; Body Diameter: 1.625 INCHES NOMINAL IN. 21 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.
NSN 5985-00-256-6392 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.