The Attenuator,variable, cataloged under National Stock Number 5985-01-407-6677, 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 General Microwave Corporation Div Kratos Microwave Electronics. Government technical data includes 16 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5985-01-407-6677 |
| Primary Part Number | 3458-603 |
| Item Name | Attenuator,variable |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | General Microwave Corporation Div Kratos Microwave Electronics |
| Status | ACTIVE |
| Impedance Rating in Ohms | 50.0 INPUT-OUTPUT |
| Mounting Facility Type and Quantity | 4 UNTHREADED HOLE(S) |
| Body Style | COAXIAL TYPE |
| Mounting Facility Pattern | FOUR POSITION RECTANGULAR |
| Adjustment Device Type and Quantity | 1 ELECTRONIC, PROGRAMMABLE |
| Voltage Standing Wave Ratio | 1.05 |
| Unthreaded Mounting Hole Diameter | 0.110 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN |
| Attenuation Per Step in Decibels | 1.0 |
| Attenuation Variation Method | STEPPED |
| Distance Between Mounting Facility Centers | 2.720 INCHES MAXIMUM IN |
| Specification/standard Data | 94987-233809 MANUFACTURERS SOURCE CONTROL |
| Application Design | TRANSMISSION LINE |
| Terminal Type and Quantity | 2 CONNECTOR, COAXIAL, FEMALE AND 1 CONNECTOR, RECEPTACLE |
| Power Rating | 10.0 MILLIWATTS AVERAGE AND 100.0 MILLIWATTS PEAK |
| Step Position Quantity | 60 |
| Coaxial Connector Series Designation | SMA |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 3458-603 PRIMARY | General Microwave Corporation Div Kratos Microwave Electronics (USA) |
| Reference | Meaning |
|---|---|
| 233809-1 | 1/2 Source control — Government-approved source U.S. Government activity |
NSN 5985-01-407-6677 is a Attenuator,variable, manufactured by General Microwave Corporation Div Kratos Microwave Electronics, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-407-6677 has 1 manufacturer part number on file: 3458-603 (General Microwave Corporation Div Kratos Microwave Electronics).
Key specifications for 3458-603: Impedance Rating in Ohms: 50.0 INPUT-OUTPUT; Mounting Facility Type and Quantity: 4 UNTHREADED HOLE(S); Overall Height: 0.800 INCHES NOMINAL IN; Body Style: COAXIAL TYPE. 16 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 5985-01-407-6677 has DEMIL Code B. 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.