The Attenuator,variable, cataloged under National Stock Number 5985-00-086-7381, is classified within Federal Supply Class 5985 (Antennas, Waveguides, and Related Equipment) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Shallco, Inc. Government technical data includes 22 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 5985-00-086-7381 |
| Primary Part Number | 8529-2 |
| Item Name | Attenuator,variable |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Shallco, Inc |
| Status | ACTIVE |
| Shaft Type | ROUND, FLATTED |
| Impedance Rating in Ohms | 5000.0 INPUT AND 220000.0 OUTPUT |
| Mounting Facility Type and Quantity | 1 THREADED BUSHING |
| Frequency Range | 0.000 KILOHERTZ MINIMUM AND 130.000 KILOHERTZ MAXIMUM |
| Shaft Diameter | 0.250 INCHES NOMINAL IN |
| Body Style | COAXIAL TYPE |
| Adjustment Device Type and Quantity | 1 SHAFT |
| First Flat Length | 0.312 INCHES NOMINAL IN |
| Overall Attenuation Range in Decibels | +0.0 TO 12.0 |
| Mounting Facility Screw Thread Series Designator | UNEF |
| Overall Attenuation Accuracy in Decibels | -0.50 TO 0.50 |
| Attenuation Per Step in Decibels | 1.0 |
| Attenuation Variation Method | STEPPED |
| Schematic Diagram Designator | UNBALANCED LADDER |
| Mounting Thread Quantity | 32 PER INCH |
| Shaft Length | 0.810 INCHES NOMINAL IN |
| Mounting Facility Nominal Screw Thread Diameter | 0.375 INCHES IN |
| Operating Temp Range | -20.0 TO 160.0 FAHRENHEIT DEGF |
| Application Design | AUDIO |
| Terminal Type and Quantity | 3 TAB, SOLDER LUG |
| Step Position Quantity | 13 |
| Flat Height | 0.205 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 8529-2 | Shallco, Inc (USA) |
| Reference | Meaning |
|---|---|
| SM-C-423473 | 5/9 Secondary reference Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin |
| SM-C-423473 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5985-00-086-7381 is a Attenuator,variable, manufactured by Shallco, Inc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-086-7381 has 1 manufacturer part number on file: 8529-2 (Shallco, Inc).
4 possible matches (shared part number, not a government interchangeability claim): 6630-01-070-5774, 5365-01-075-0950, 5355-01-085-1672. Verify interchangeability with system specifications before substitution.
Key specifications for 8529-2: Shaft Type: ROUND, FLATTED; Impedance Rating in Ohms: 5000.0 INPUT AND 220000.0 OUTPUT; Mounting Facility Type and Quantity: 1 THREADED BUSHING; Overall Height: 2.460 INCHES NOMINAL IN. 22 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.