The Attenuator,variable, cataloged under National Stock Number 5985-00-283-6856, is classified within Federal Supply Class 5985 (Antennas, Waveguides, and Related Equipment) of the Electrical and Electronic Equipment Components group. Government technical data includes 23 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 7 items share a part number with this NSN in the catalog (possible match — not a government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 | 5985-00-283-6856 |
| Item Name | Attenuator,variable |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Status | ACTIVE |
| Shaft Type | ROUND |
| Insertion Loss at Minimum Attenuation in Maximum Decibels | 0.058 |
| Bushing Length | 0.375 INCHES NOMINAL IN |
| Impedance Rating in Ohms | 600.0 INPUT-OUTPUT |
| Mounting Facility Type and Quantity | 1 THREADED BUSHING |
| Frequency Range | 51.000 HERTZ MINIMUM AND 55.000 KILOHERTZ MAXIMUM |
| Shaft Diameter | 0.250 INCHES NOMINAL IN |
| Body Style | CYLINDRICAL W/REAR TERMINALS |
| Attenuation Accuracy Reference Frequency | 1.0 KILOHERTZ |
| Adjustment Device Type and Quantity | 2 SHAFT |
| Overall Attenuation Range in Decibels | +46.0 TO 55.0 |
| Mounting Facility Screw Thread Series Designator | UNEF |
| Overall Attenuation Accuracy in Decibels | -9.20 TO 9.20 |
| Attenuation Variation Method | CONTINUOUS |
| Schematic Diagram Designator | "T" |
| Mounting Thread Quantity | 32 PER INCH |
| Shaft Length | 0.875 INCHES NOMINAL IN |
| Body Length | 1.266 INCHES MAXIMUM IN |
| Mounting Facility Nominal Screw Thread Diameter | 0.375 INCHES IN |
| Operating Temp Range | -55.0 TO 120.0 CELSIUS DEGC |
| Application Design | AUDIO |
| Terminal Type and Quantity | 4 TAB, SOLDER LUG |
| Power Rating | 5.0 WATTS AVERAGE |
| 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 |
|---|---|
| 27952 | 5/9 Secondary reference Rockwell Automation, Inc. Dba Rockwell Automation |
| 383-0012-00 | 3/9 Design control — primary reference Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems |
NSN 5985-00-283-6856 is a Attenuator,variable, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
7 possible matches (shared part number, not a government interchangeability claim): 5325-00-378-7224, 5905-01-043-7302, 7930-01-072-3722. Verify interchangeability with system specifications before substitution.
Key specifications for 5985-00-283-6856: Shaft Type: ROUND; Insertion Loss at Minimum Attenuation in Maximum Decibels: 0.058; Bushing Length: 0.375 INCHES NOMINAL IN; Impedance Rating in Ohms: 600.0 INPUT-OUTPUT. 23 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.