The Attenuator,variable, cataloged under National Stock Number 5985-00-429-2037, 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25 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 8 items share a part number with this NSN in the catalog (possible match — not a government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 | 5985-00-429-2037 |
| 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 | 0.6 |
| Bushing Length | 0.370 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN |
| Impedance Rating in Ohms | 135.0 INPUT-OUTPUT |
| Body Diameter | 0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN |
| Mounting Facility Type and Quantity | 1 THREADED BUSHING |
| FSC Application Data | ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT |
| Shaft Diameter | 0.124 INCHES MINIMUM AND 0.126 INCHES MAXIMUM IN |
| Body Style | CYLINDRICAL W/SIDE AND REAR TERMINALS |
| Adjustment Device Type and Quantity | 1 SHAFT |
| Overall Diameter | 0.745 INCHES MINIMUM AND 0.755 INCHES MAXIMUM IN |
| Overall Attenuation Range in Decibels | +0.0 TO 20.0 |
| Mounting Facility Screw Thread Series Designator | UNEF |
| Overall Attenuation Accuracy in Decibels | -1.00 TO 1.00 |
| Attenuation Variation Method | CONTINUOUS |
| Schematic Diagram Designator | BRIDGED "T" |
| Mounting Thread Quantity | 32 PER INCH |
| Shaft Length | 0.500 INCHES NOMINAL IN |
| Body Length | 0.547 INCHES MAXIMUM IN |
| Mounting Facility Nominal Screw Thread Diameter | 0.250 INCHES IN |
| Operating Temp Range | -55.0 TO 120.0 CELSIUS DEGC |
| Test Data Document | 13499-383-0273 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 | 250.0 MILLIWATTS 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 |
|---|---|
| 7714 | 5/9 Secondary reference Rockwell Automation, Inc. Dba Rockwell Automation |
| 383-0273-020 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 383-0273-020 | 3/9 Design control — primary reference Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems |
| 383-0273-020 | 5/2 Secondary reference U.S. Government activity |
NSN 5985-00-429-2037 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): 6240-00-481-5776, 5925-00-502-9276, 5330-00-569-0597. Verify interchangeability with system specifications before substitution.
Key specifications for 5985-00-429-2037: Shaft Type: ROUND, SLOTTED; Insertion Loss at Minimum Attenuation in Maximum Decibels: 0.6; Bushing Length: 0.370 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN; Impedance Rating in Ohms: 135.0 INPUT-OUTPUT. 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.