The Switch,radio Frequency Transmiss, cataloged under National Stock Number 5985-01-274-7806, 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 Smiths Interconnect Americas, Inc.. Government technical data includes 27 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5985-01-274-7806 |
| Primary Part Number | ES387AF |
| Item Name | Switch,radio Frequency Transmiss |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Smiths Interconnect Americas, Inc. |
| Status | ACTIVE |
| Switching Time | 1.0 MICROSECONDS US |
| Mounting Facility Type and Quantity | 4 UNTHREADED HOLE(S) |
| Body Style | RECTANGULARRECTANGULAR |
| Mounting Facility Pattern | FOUR POSITION RECTANGULAR SINGLE MOUNTING FACILITY PATTERN |
| Voltage Standing Wave Ratio | 1.30 FIRST1.30 FIRST |
| Voltage Standing Wave Ratio | 1.50 SECOND1.50 SECOND |
| Unthreaded Mounting Hole Diameter | 0.128 INCHES NOMINAL0.128 INCHES NOMINAL IN |
| Pole Quantity | 1 |
| Longest Vertical Distance Between Mounting Centers | 0.900 INCHES NOMINAL SINGLE MOUNTING FACILITY PATTERN0.900 INCHES NOMINAL SINGLE MOUNTING FACILITY PATTERN IN |
| Switch Return Mechanism Type | FAIL-SAFE |
| Connector End Design | FEMALEFEMALE |
| Coupling Position Quantity | 3 |
| Minimum Crosstalk Rating in Decibels | 40.0 THIRD |
| Minimum Crosstalk Rating in Decibels | 60.0 SECOND60.0 SECOND |
| Minimum Crosstalk Rating in Decibels | 70.0 FIRST70.0 FIRST |
| Switch Type | NONTRANSFERNONTRANSFER |
| Insertion Loss in Decibels | 1.00 FIRST1.00 FIRST |
| Insertion Loss in Decibels | 1.20 SECOND1.20 SECOND |
| Insertion Loss in Decibels | 2.50 THIRD2.50 THIRD |
| Actuator Operating Method | RELAY |
| Frequency Rating | 100.0 MEGAHERTZ MINIMUM AND 100.0 MEGAHERTZ MINIMUM AND 1000.0 MEGAHERTZ MAXIMUM SECOND FREQUENCY VOLTAGE STANDING WAVE RATIO1000.0 MEGAHERTZ MAXIMUM SECOND FREQUENCY VOLTAGE STANDING WAVE RATIO |
| Frequency Rating | 100.0 MEGAHERTZ MINIMUM AND 100.0 MEGAHERTZ MINIMUM AND 500.0 MEGAHERTZ MAXIMUM SECOND FREQUENCY CROSSTALK REFERENCE500.0 MEGAHERTZ MAXIMUM SECOND FREQUENCY CROSSTALK REFERENCE |
| Frequency Rating | 100.0 MEGAHERTZ MINIMUM AND 100.0 MEGAHERTZ MINIMUM AND 500.0 MEGAHERTZ MAXIMUM SECOND FREQUENCY INSERTION LOSS REFERENCE500.0 MEGAHERTZ MAXIMUM SECOND FREQUENCY INSERTION LOSS REFERENCE |
| Frequency Rating | 30.0 MEGAHERTZ MINIMUM AND 30.0 MEGAHERTZ MINIMUM AND 100.0 MEGAHERTZ MAXIMUM FIRST FREQUENCY CROSSTALK REFERENCE100.0 MEGAHERTZ MAXIMUM FIRST FREQUENCY CROSSTALK REFERENCE |
| Frequency Rating | 30.0 MEGAHERTZ MINIMUM AND 30.0 MEGAHERTZ MINIMUM AND 100.0 MEGAHERTZ MAXIMUM FIRST FREQUENCY INSERTION LOSS REFERENCE100.0 MEGAHERTZ MAXIMUM FIRST FREQUENCY INSERTION LOSS REFERENCE |
| Frequency Rating | 30.0 MEGAHERTZ MINIMUM AND 30.0 MEGAHERTZ MINIMUM AND 100.0 MEGAHERTZ MAXIMUM FIRST FREQUENCY VOLTAGE STANDING WAVE RATIO100.0 MEGAHERTZ MAXIMUM FIRST FREQUENCY VOLTAGE STANDING WAVE RATIO |
| Frequency Rating | 30.0 MEGAHERTZ MINIMUM AND 30.0 MEGAHERTZ MINIMUM AND 1000.0 MEGAHERTZ MAXIMUM SINGLE FREQUENCY OPERATING1000.0 MEGAHERTZ MAXIMUM SINGLE FREQUENCY OPERATING |
| 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 |
|---|---|
| ES387AF PRIMARY | Smiths Interconnect Americas, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 110S046-2 | 5/2 Secondary reference U.S. Government activity |
NSN 5985-01-274-7806 is a Switch,radio Frequency Transmiss, manufactured by Smiths Interconnect Americas, Inc., classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-274-7806 has 1 manufacturer part number on file: ES387AF (Smiths Interconnect Americas, Inc.).
Key specifications for ES387AF: Switching Time: 1.0 MICROSECONDS US; Mounting Facility Type and Quantity: 4 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.