The Switch,radio Frequency Transmiss, cataloged under National Stock Number 5985-00-689-9515, 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 Northrop Grumman Support Services Corp. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-689-9515 |
| Primary Part Number | 128C551H01 |
| Item Name | Switch,radio Frequency Transmiss |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Northrop Grumman Support Services Corp |
| Status | ACTIVE |
| Switching Time | 0.1 MICROSECONDS US |
| Mounting Facility Type and Quantity | 4 THREADED HOLE(S) |
| Body Style | RECTANGULAR |
| Mounting Facility Pattern | FOUR POSITION RECTANGULAR SINGLE MOUNTING FACILITY PATTERN |
| Longest Vertical Distance Between Mounting Centers | 1.485 INCHES MINIMUM AND 1.515 INCHES MAXIMUM SINGLE MOUNTING FACILITY PATTERN IN |
| Switch Return Mechanism Type | FAIL-SAFE |
| Connector End Design | FEMALE |
| Unpackaged Unit Weight | 0.700 POUNDS LBS |
| Coupling Position Quantity | 5 |
| Maximum Operating Altitude Rating | 10000.0 FEET FT |
| Nominal Thread Size | 0.138 INCHES MOUNTING FACILITY HOLE IN |
| Minimum Crosstalk Rating in Decibels | 30.0 SINGLE |
| Switch Type | TRANSFER |
| Insertion Loss in Decibels | 1.50 SINGLE |
| Actuator Operating Method | RELAY |
| Operating Temp Range | -62.0 TO 71.0 CELSIUS DEGC |
| Frequency Rating | 2.9 GIGAHERTZ MINIMUM AND 3.1 GIGAHERTZ MAXIMUM SINGLE FREQUENCY CROSSTALK REFERENCE |
| Frequency Rating | 2.9 GIGAHERTZ MINIMUM AND 3.1 GIGAHERTZ MAXIMUM SINGLE FREQUENCY INSERTION LOSS REFERENCE |
| Frequency Rating | 2.9 GIGAHERTZ MINIMUM AND 3.1 GIGAHERTZ MAXIMUM SINGLE FREQUENCY OPERATING |
| Frequency Rating | 2.9 GIGAHERTZ MINIMUM AND 3.1 GIGAHERTZ MAXIMUM SINGLE FREQUENCY RF POWER HANDLING |
| Frequency Rating | 2.9 GIGAHERTZ MINIMUM AND 3.1 GIGAHERTZ MAXIMUM SINGLE FREQUENCY VOLTAGE STANDING WAVE RATIO |
| Rf Power Handling Capability | 1.0 WATTS PEAK SINGLE |
| Thread Class | 2B MOUNTING FACILITY HOLE |
| Thread Quantity Per Inch | 32 MOUNTING FACILITY HOLE |
| Terminal Type and Quantity | 5 CONNECTOR, RECEPTACLE |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) MOUNTING FACILITY HOLE |
| Switch Operation Sequence | MAKES BEFORE BREAKS |
| 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 |
|---|---|
| 128C551H01 PRIMARY | Northrop Grumman Support Services Corp (USA) |
| Reference | Meaning |
|---|---|
| 128C551H01 | 3/9 Design control — primary reference U.S. Government activity |
| 4762H | 5/9 Secondary reference Antenna & Radome Research Associates Corp Dba Arra Inc Div Arra Inc |
| MA8303-2S2S | 5/9 Secondary reference U.S. Government activity |
NSN 5985-00-689-9515 is a Switch,radio Frequency Transmiss, manufactured by Northrop Grumman Support Services Corp, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-689-9515 has 1 manufacturer part number on file: 128C551H01 (Northrop Grumman Support Services Corp).
Key specifications for 128C551H01: Switching Time: 0.1 MICROSECONDS US; Mounting Facility Type and Quantity: 4 THREADED HOLE(S); Overall Height: 3.640 INCHES MINIMUM AND 3.760 INCHES MAXIMUM IN; Body Style: RECTANGULAR. 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.
NSN 5985-00-689-9515 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.