The Attenuator,variable, cataloged under National Stock Number 5985-01-297-2218, 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 22 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5985-01-297-2218 |
| Primary Part Number | 100D1768 |
| 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 | 4.5 |
| Impedance Rating in Ohms | 50.0 INPUT-OUTPUT |
| Mounting Facility Type and Quantity | 4 UNTHREADED HOLE(S) |
| FSC Application Data | ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT |
| Frequency Range | 0.030 GIGAHERTZ MINIMUM AND 1.000 GIGAHERTZ MAXIMUM |
| Body Style | IRREGULAR |
| Mounting Facility Pattern | FOUR POSITION RECTANGULAR |
| Adjustment Device Type and Quantity | 1 ELECTRONIC, PROGRAMMABLE |
| Center to Center Distance Between Mounting Facilities Parallel to Length | 3.390 INCHES MINIMUM AND 3.410 INCHES MAXIMUM IN |
| Overall Attenuation Range in Decibels | +0.0 TO 85.0 |
| Voltage Standing Wave Ratio | 1.40 |
| Supplementary Features | 5.0 MSEC MAX SWITCHING SPEED |
| Unthreaded Mounting Hole Diameter | 0.187 INCHES MINIMUM AND 0.193 INCHES MAXIMUM IN |
| Overall Attenuation Accuracy in Decibels | -0.15 TO 0.15 |
| Attenuation Per Step in Decibels | 1.0 AND 2.0 AND 4.0 AND 8.0 AND 10.0 AND 20.0 AND 40.0 |
| Attenuation Variation Method | STEPPED |
| Operating Temp Range | +0.0 TO 85.0 CELSIUS DEGC |
| Center to Center Distance Between Mounting Facilities Parallel to Width | 0.890 INCHES MINIMUM AND 0.910 INCHES MAXIMUM IN |
| Application Design | TRANSMISSION LINE |
| Terminal Type and Quantity | 2 CONNECTOR, COAXIAL, FEMALE AND 1 CONNECTOR, RECEPTACLE |
| Step Position Quantity | 7 |
| 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 |
|---|---|
| 100D1768 | Daico Industries, Inc. Dba Daico Industries Inc (USA) |
| Reference | Meaning |
|---|---|
| 295062P1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5985-01-297-2218 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 5985-01-297-2218 has 1 manufacturer part number on file: 100D1768 (Daico Industries, Inc. Dba Daico Industries Inc).
Key specifications for 100D1768: Insertion Loss at Minimum Attenuation in Maximum Decibels: 4.5; Impedance Rating in Ohms: 50.0 INPUT-OUTPUT; Mounting Facility Type and Quantity: 4 UNTHREADED HOLE(S); Overall Height: 1.480 INCHES MINIMUM AND 1.540 INCHES MAXIMUM IN. 22 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 5985-01-297-2218 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.