The Attenuator,variable, cataloged under National Stock Number 5985-01-186-7345, 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 Daico Industries, Inc. Dba Daico Industries Inc. Government technical data includes 6 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5985-01-186-7345 |
| Primary Part Number | 586R551H01 |
| Item Name | Attenuator,variable |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Daico Industries, Inc. Dba Daico Industries Inc |
| Status | ACTIVE |
| Frequency Range | 20.0 MEGAHERTZ MINIMUM AND 40.0 MEGAHERTZ MAXIMUM |
| Supplementary Features | NON-OPERATING TEMPERATURE: -57 DEGREES CELSIUS TO + 68 DEGREES CELSIUS |
| Reference Data and Literature | T.O. 31P3-2TPS75-4 |
| Attenuation Variation Method | STEPPED |
| Operating Temp Range | -20.0 TO 60.0 CELSIUS DEGC |
| Functional Description | TEST CONDITIONS: 5 VOLTS AT 35 MILLIAMPERES PER STEP; CONTROL: TTL OR CMOS (1 LOW POWER LOAD); ATTENUATION: 1-32 DECIBELS; VOLTAGE STANDING WAVE RATIO VSWR (50 OHMS, NOMINAL): 1.35:1 MAXIMUM; INSERTION LOSS: .05 DECIBELS PER STEP, 3 DECIBELS TOTAL MAX; RF POWER: 13 DBM MAXIMUM (INPUT);SWITCHING SPEED: 1 MICROSECOND US |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 586R551H01 PRIMARY | Daico Industries, Inc. Dba Daico Industries Inc (USA) |
| 586R551H01 | Northrop Grumman Support Services Corp (USA) |
| Reference | Meaning |
|---|---|
| 586R551H01 | 1/2 Source control — Government-approved source U.S. Government activity |
| 586R551H01 | 5/9 Secondary reference Giesting & Associates, Inc. |
NSN 5985-01-186-7345 is a Attenuator,variable, manufactured by Daico Industries, Inc. Dba Daico Industries Inc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-186-7345 has 2 manufacturer part numbers on file: 586R551H01 (Daico Industries, Inc. Dba Daico Industries Inc), 586R551H01 (Northrop Grumman Support Services Corp).
Key specifications for 586R551H01: Frequency Range: 20.0 MEGAHERTZ MINIMUM AND 40.0 MEGAHERTZ MAXIMUM; Supplementary Features: NON-OPERATING TEMPERATURE: -57 DEGREES CELSIUS TO + 68 DEGREES CELSIUS; Reference Data and Literature: T.O. 31P3-2TPS75-4; Attenuation Variation Method: STEPPED. 6 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 5985-01-186-7345 has DEMIL Code D. 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.