The Switch,radio Frequency Transmiss, cataloged under National Stock Number 5985-01-254-8250, 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 Ducommun Labarge Technologies, Inc Dba Ducommun Labarge Technologies, Inc. Government technical data includes 27 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-254-8250 |
| Primary Part Number | T4-413M301 |
| Item Name | Switch,radio Frequency Transmiss |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Ducommun Labarge Technologies, Inc Dba Ducommun Labarge Technologies, Inc |
| Status | ACTIVE |
| Switching Time | 25.0 MILLISECONDS25.0 MILLISECONDS MS |
| Mounting Facility Type and Quantity | 3 UNTHREADED HOLE(S)3 UNTHREADED HOLE(S) |
| Body Style | RECTANGULARRECTANGULAR |
| Mounting Facility Pattern | ISOSCELES TRIANGLE SINGLE MOUNTING FACILITY PATTERNISOSCELES TRIANGLE SINGLE MOUNTING FACILITY PATTERN |
| Precious Material | GOLD |
| Voltage Standing Wave Ratio | 1.40 THIRD1.40 THIRD |
| Voltage Standing Wave Ratio | 1.50 FOURTH1.50 FOURTH |
| Voltage Standing Wave Ratio | 1.30 SECOND1.30 SECOND |
| Voltage Standing Wave Ratio | 1.20 FIRST1.20 FIRST |
| Unthreaded Mounting Hole Diameter | 0.149 INCHES NOMINAL0.149 INCHES NOMINAL IN |
| Pole Quantity | 11 |
| Switch Return Mechanism Type | FAIL-SAFEFAIL-SAFE |
| Connector End Design | FEMALEFEMALE |
| Coupling Position Quantity | 44 |
| Minimum Crosstalk Rating in Decibels | 60.0 SINGLE60.0 SINGLE |
| Switch Type | NONTRANSFERNONTRANSFER |
| Insertion Loss in Decibels | 0.40 THIRD0.40 THIRD |
| Insertion Loss in Decibels | 0.30 SECOND0.30 SECOND |
| Insertion Loss in Decibels | 0.50 FOURTH0.50 FOURTH |
| Insertion Loss in Decibels | 0.20 FIRST0.20 FIRST |
| Actuator Operating Method | SOLID STATESOLID STATE |
| Surface Treatment | NICKEL BODY OUTSIDE SURFACES |
| Surface Treatment | GOLD CONTACT(S) OUTSIDE SURFACES |
| Precious Material and Location | CONTACT SURFACES GOLD |
| Operating Temp Range | -35.0 TO 100.0 CELSIUS-35.0 TO 100.0 CELSIUS DEGC |
| Frequency Rating | 3.0 GIGAHERTZ MINIMUM AND 3.0 GIGAHERTZ MINIMUM AND 8.0 GIGAHERTZ MAXIMUM SECOND FREQUENCY INSERTION LOSS REFERENCE8.0 GIGAHERTZ MAXIMUM SECOND FREQUENCY INSERTION LOSS REFERENCE |
| Frequency Rating | 8.0 GIGAHERTZ MINIMUM AND 8.0 GIGAHERTZ MINIMUM AND 12.4 GIGAHERTZ MAXIMUM THIRD FREQUENCY VOLTAGE STANDING WAVE RATIO12.4 GIGAHERTZ MAXIMUM THIRD FREQUENCY VOLTAGE STANDING WAVE RATIO |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| T4-413M301 PRIMARY | Ducommun Labarge Technologies, Inc Dba Ducommun Labarge Technologies, Inc (USA) |
| T4-413M301 | Leonardo Spa Aeronautics Division - Pomigliano D'arco Site (ITA) |
NSN 5985-01-254-8250 is a Switch,radio Frequency Transmiss, manufactured by Ducommun Labarge Technologies, Inc Dba Ducommun Labarge Technologies, Inc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-254-8250 has 2 manufacturer part numbers on file: T4-413M301 (Ducommun Labarge Technologies, Inc Dba Ducommun Labarge Technologies, Inc), T4-413M301 (Leonardo Spa Aeronautics Division - Pomigliano D'arco Site).
Key specifications for T4-413M301: Switching Time: 25.0 MILLISECONDS25.0 MILLISECONDS MS; Mounting Facility Type and Quantity: 3 UNTHREADED HOLE(S)3 UNTHREADED HOLE(S); Overall Height: 1.250 INCHES NOMINAL1.250 INCHES NOMINAL IN; Body Style: RECTANGULARRECTANGULAR. 27 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.
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.