The Attenuator,variable, cataloged under National Stock Number 5985-01-049-7971, 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 14 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-049-7971 |
| Primary Part Number | 100C0493-1 |
| Item Name | Attenuator,variable |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Daico Industries, Inc. Dba Daico Industries Inc |
| Status | ACTIVE |
| Insertion Loss at Minimum Attenuation in Maximum Decibels | 1.0 |
| Impedance Rating in Ohms | 50.0 INPUT-OUTPUT |
| Frequency Range | 0.000 HERTZ MINIMUM AND 400.000 MEGAHERTZ MAXIMUM |
| Body Style | COAXIAL TYPE |
| Overall Attenuation Range in Decibels | +6.0 TO 12.0 |
| Voltage Standing Wave Ratio | 1.50 |
| Scale Linearity | LINEAR |
| Attenuation Per Step in Decibels | 6.0 |
| Attenuation Variation Method | STEPPED |
| Schematic Diagram Designator | UNBALANCED "PI" |
| Operating Temp Range | -65.0 TO 85.0 CELSIUS DEGC |
| Application Design | TRANSMISSION LINE |
| Step Position Quantity | 2 |
| 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 |
|---|---|
| 100C0493-1 PRIMARY | Daico Industries, Inc. Dba Daico Industries Inc (USA) |
| Reference | Meaning |
|---|---|
| 4010-1320-11 | 7/2 Vendor item drawing reference Southwest Research Institute |
NSN 5985-01-049-7971 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 5985-01-049-7971 has 1 manufacturer part number on file: 100C0493-1 (Daico Industries, Inc. Dba Daico Industries Inc).
Key specifications for 100C0493-1: Insertion Loss at Minimum Attenuation in Maximum Decibels: 1.0; Impedance Rating in Ohms: 50.0 INPUT-OUTPUT; Overall Height: 0.750 INCHES NOMINAL IN; Frequency Range: 0.000 HERTZ MINIMUM AND 400.000 MEGAHERTZ MAXIMUM. 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 5985-01-049-7971 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.