The Attenuator,variable, cataloged under National Stock Number 5985-01-286-6648, 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 Honeywell Intl Inc Defense Avionics Systems Former Test Systems Div. Government technical data includes 21 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-286-6648 |
| Primary Part Number | 6406856-4 |
| Item Name | Attenuator,variable |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Honeywell Intl Inc Defense Avionics Systems Former Test Systems Div |
| Status | ACTIVE |
| Insertion Loss at Minimum Attenuation in Maximum Decibels | 3.0 |
| Impedance Rating in Ohms | 50.0 INPUT-OUTPUT |
| Mounting Facility Type and Quantity | 4 THREADED HOLE(S) |
| Frequency Range | 0.000 HERTZ MINIMUM AND 1.500 GIGAHERTZ MAXIMUM |
| Body Style | IRREGULAR |
| Attenuation Accuracy Reference Frequency | 1.0 GIGAHERTZ |
| Mounting Facility Pattern | FOUR POSITION IN-LINE |
| Segment Attenuation Accuracy in Decibels | -0.30 TO 0.50 |
| Adjustment Device Type and Quantity | 1 ELECTRONIC, PROGRAMMABLE |
| Center to Center Distance Between Mounting Facilities Parallel to Length | 1.500 INCHES NOMINAL IN |
| Overall Attenuation Range in Decibels | +1.0 TO 4.0 |
| Voltage Standing Wave Ratio | 1.40 |
| Mounting Facility Screw Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Attenuation Per Step in Decibels | 1.0 AND 2.0 AND 4.0 |
| Attenuation Variation Method | STEPPED |
| Center to Center Distance Between Mounting Facilities Parallel to Width | 0.600 INCHES NOMINAL IN |
| Application Design | TRANSMISSION LINE |
| Terminal Type and Quantity | 3 CONNECTOR, COAXIAL, FEMALE |
| Power Rating | 0.5 WATTS AVERAGE |
| Step Position Quantity | 4 |
| Coaxial Connector Series Designation | SMA |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 5P11SS26-TTL | Wavetek Rf Products, Inc (USA) |
| 6406856-4 PRIMARY | Honeywell Intl Inc Defense Avionics Systems Former Test Systems Div (USA) |
NSN 5985-01-286-6648 is a Attenuator,variable, manufactured by Honeywell Intl Inc Defense Avionics Systems Former Test Systems Div, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-286-6648 has 2 manufacturer part numbers on file: 5P11SS26-TTL (Wavetek Rf Products, Inc), 6406856-4 (Honeywell Intl Inc Defense Avionics Systems Former Test Systems Div).
Key specifications for 6406856-4: Insertion Loss at Minimum Attenuation in Maximum Decibels: 3.0; Impedance Rating in Ohms: 50.0 INPUT-OUTPUT; Mounting Facility Type and Quantity: 4 THREADED HOLE(S); Overall Height: 0.800 INCHES NOMINAL IN. 21 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 5985-01-286-6648 has DEMIL Code Q. 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.