The Attenuator,variable, cataloged under National Stock Number 5985-00-172-7860, is classified within Federal Supply Class 5985 (Antennas, Waveguides, and Related Equipment) of the Electrical and Electronic Equipment Components group. Government technical data includes 20 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 5985-00-172-7860 |
| Item Name | Attenuator,variable |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Status | ACTIVE |
| Shaft Type | ROUND, SLOTTED |
| Insertion Loss at Minimum Attenuation in Maximum Decibels | 0.5 |
| Bushing Length | 0.375 INCHES NOMINAL IN |
| Impedance Rating in Ohms | 50.0 INPUT-OUTPUT |
| Body Diameter | 1.156 INCHES MAXIMUM IN |
| Mounting Facility Type and Quantity | 1 THREADED BUSHING |
| Shaft Diameter | 0.248 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN |
| Body Style | CYLINDRICAL W/SIDE TERMINALS |
| Adjustment Device Type and Quantity | 1 SHAFT |
| Overall Attenuation Range in Decibels | +0.0 TO 30.0 |
| Overall Attenuation Accuracy in Decibels | -5.00 TO 5.00 |
| Attenuation Variation Method | CONTINUOUS |
| Schematic Diagram Designator | BRIDGED "T" |
| Shaft Length | 0.875 INCHES NOMINAL IN |
| Body Length | 1.266 INCHES MAXIMUM IN |
| Operating Temp Range | +0.0 TO 70.0 CELSIUS DEGC |
| Test Data Document | 42498-A44194 DRAWING (THIS IS THE BASIC GOVERNING DRAWING, SUCH AS A CONTRACTOR DRAWING, ORIGINAL EQUIPMENT MANUFACTURER DRAWING, ETC.; EXCLUDES ANY SPECIFICATION, STANDARD OR OTHER DOCUMENT THAT MAY BE REFERENCED IN A BASIC GOVERNING DRAWING) |
| Application Design | AUDIO |
| Terminal Type and Quantity | 6 TAB, SOLDER LUG |
| Power Rating | 2.0 WATTS AVERAGE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| JJ | 5/9 Secondary reference Rockwell Automation, Inc. Dba Rockwell Automation |
| A44194-1 | 3/9 Design control — primary reference Dar Electronics Inc Dba National Radio Co |
| JJ96736 | 5/9 Secondary reference Rockwell Automation, Inc. Dba Rockwell Automation |
NSN 5985-00-172-7860 is a Attenuator,variable, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
3 possible matches (shared part number, not a government interchangeability claim): 5905-00-192-2958, 5905-00-702-5629, 5905-00-810-4458. Verify interchangeability with system specifications before substitution.
Key specifications for 5985-00-172-7860: Shaft Type: ROUND, SLOTTED; Insertion Loss at Minimum Attenuation in Maximum Decibels: 0.5; Bushing Length: 0.375 INCHES NOMINAL IN; Impedance Rating in Ohms: 50.0 INPUT-OUTPUT. 20 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 5985-00-172-7860 has DEMIL Code B. 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.