The Attenuator,variable, cataloged under National Stock Number 5985-01-048-4451, 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 18 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-048-4451 |
| Primary Part Number | 100C0989 |
| 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 | 1.5 |
| Impedance Rating in Ohms | 50.0 INPUT-OUTPUT |
| Mounting Facility Type and Quantity | 4 UNTHREADED HOLE(S) |
| Frequency Range | 0.000 MEGAHERTZ MINIMUM AND 100.000 MEGAHERTZ MAXIMUM |
| Body Style | COAXIAL TYPE |
| Mounting Facility Pattern | FOUR POSITION RECTANGULAR |
| Segment Attenuation Accuracy in Decibels | -0.10 TO 0.10 AND -0.20 TO 0.20 AND -0.40 TO 0.40 AND -0.80 TO 0.80 |
| Center to Center Distance Between Mounting Facilities Parallel to Length | 5.375 INCHES NOMINAL IN |
| Overall Attenuation Range in Decibels | +0.0 TO 63.0 |
| Voltage Standing Wave Ratio | 1.25 |
| Segment Attenuation Range in Decibels | +1.00 TO 8.00 AND +8.00 TO 16.00 AND +16.00 TO 32.00 AND +32.00 TO 63.00 |
| Unthreaded Mounting Hole Diameter | 0.144 INCHES NOMINAL IN |
| Attenuation Per Step in Decibels | 1.0 |
| Attenuation Variation Method | STEPPED |
| Center to Center Distance Between Mounting Facilities Parallel to Width | 1.250 INCHES NOMINAL IN |
| Application Design | TRANSMISSION LINE |
| Step Position Quantity | 1 |
| Coaxial Connector Series Designation | SM |
| 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 |
|---|---|
| 100C0989 PRIMARY | Daico Industries, Inc. Dba Daico Industries Inc (USA) |
NSN 5985-01-048-4451 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 5985-01-048-4451 has 1 manufacturer part number on file: 100C0989 (Daico Industries, Inc. Dba Daico Industries Inc).
Key specifications for 100C0989: Insertion Loss at Minimum Attenuation in Maximum Decibels: 1.5; Impedance Rating in Ohms: 50.0 INPUT-OUTPUT; Mounting Facility Type and Quantity: 4 UNTHREADED HOLE(S); Overall Height: 0.875 INCHES NOMINAL IN. 18 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 5985-01-048-4451 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.