The Attenuator,variable, cataloged under National Stock Number 5985-00-666-1366, 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 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-666-1366 |
| Primary Part Number | 1387460 |
| Item Name | Attenuator,variable |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Shaft Type | ROUND, SLOTTED |
| Waveguide Flange Type | COVER |
| Mounting Facility Type and Quantity | 8 TERMINAL WITH MOUNTING HOLES |
| Frequency Range | 16.400 GIGAHERTZ MINIMUM AND 16.600 GIGAHERTZ MAXIMUM |
| Shaft Diameter | 0.246 INCHES MINIMUM AND 0.248 INCHES MAXIMUM IN |
| Body Style | WAVEGUIDE TYPE |
| Adjustment Device Type and Quantity | 1 SHAFT |
| Overall Attenuation Range in Decibels | +0.0 TO 25.0 |
| Unthreaded Mounting Hole Diameter | 0.125 INCHES NOMINAL IN |
| Overall Attenuation Accuracy in Decibels | -1.00 TO 1.00 |
| Attenuation Variation Method | CONTINUOUS |
| Application Design | WAVEGUIDE |
| Terminal Type and Quantity | 2 FLANGE |
| Power Rating | 0.5 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 |
| Part Number | Manufacturer |
|---|---|
| 1387460 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| 1387460 | Microwave Development Laboratories, Inc. Dba Microwave Development Laboratories Inc (USA) |
| Reference | Meaning |
|---|---|
| 1387460 | 5/9 Secondary reference U.S. Government activity |
| 1387460 | 5/2 Secondary reference U.S. Government activity |
NSN 5985-00-666-1366 is a Attenuator,variable, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-666-1366 has 2 manufacturer part numbers on file: 1387460 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 1387460 (Microwave Development Laboratories, Inc. Dba Microwave Development Laboratories Inc).
Key specifications for 1387460: Shaft Type: ROUND, SLOTTED; Waveguide Flange Type: COVER; Mounting Facility Type and Quantity: 8 TERMINAL WITH MOUNTING HOLES; Overall Height: 2.062 INCHES NOMINAL IN. 14 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 5985-00-666-1366 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.