The Attenuator,variable, cataloged under National Stock Number 5985-00-165-3128, 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 20 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-165-3128 |
| Primary Part Number | SPEC 12380 |
| Item Name | Attenuator,variable |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Shallco, Inc |
| Status | ACTIVE |
| Shaft Type | ROUND |
| Insertion Loss at Minimum Attenuation in Maximum Decibels | 0.5 |
| Impedance Rating in Ohms | 600.0 INPUT-OUTPUT |
| Body Diameter | 1.844 INCHES NOMINAL IN |
| Mounting Facility Type and Quantity | 1 BUSHING |
| FSC Application Data | ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT |
| Frequency Range | 7.900 GIGAHERTZ MINIMUM AND 8.400 GIGAHERTZ MAXIMUM |
| Shaft Diameter | 0.249 INCHES MINIMUM AND 0.251 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 |
| Voltage Standing Wave Ratio | 1.05 |
| Attenuation Per Step in Decibels | 1.0 |
| Attenuation Variation Method | STEPPED |
| Schematic Diagram Designator | BALANCED LADDER |
| Shaft Length | 1.094 INCHES NOMINAL IN |
| Body Length | 2.063 INCHES NOMINAL IN |
| Application Design | AUDIO |
| Terminal Type and Quantity | 6 TAB, SOLDER LUG |
| Step Position Quantity | 30 |
| 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 |
|---|---|
| SPEC 12380 PRIMARY | Shallco, Inc (USA) |
| Reference | Meaning |
|---|---|
| 252424 | 5/9 Secondary reference Electronics of Clearfield Inc |
| 130C1A1-600 | 5/9 Secondary reference Shallco, Inc |
| SK-358 | 5/9 Secondary reference Shallco, Inc |
NSN 5985-00-165-3128 is a Attenuator,variable, manufactured by Shallco, Inc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-165-3128 has 1 manufacturer part number on file: SPEC 12380 (Shallco, Inc).
Key specifications for SPEC 12380: Shaft Type: ROUND; Insertion Loss at Minimum Attenuation in Maximum Decibels: 0.5; Impedance Rating in Ohms: 600.0 INPUT-OUTPUT; Body Diameter: 1.844 INCHES NOMINAL IN. 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.
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.