The Transformer,radio Frequency, cataloged under National Stock Number 5950-00-243-3854, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple. Government technical data includes 18 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5950-00-243-3854 |
| Primary Part Number | 51C1162 |
| Item Name | Transformer,radio Frequency |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple |
| Status | ACTIVE |
| Mounting Facility Quantity | 2 SINGLE GROUP2 SINGLE GROUP |
| Inclosure Type | OPENOPEN |
| Body Outside Diameter | 0.375 INCHES NOMINAL0.375 INCHES NOMINAL IN |
| Turn Quantity | 3-1/2 SINGLE COMPONENT SINGLE PRIMARY3-1/2 SINGLE COMPONENT SINGLE PRIMARY |
| Turn Quantity | 4 SINGLE COMPONENT SINGLE SECONDARY4 SINGLE COMPONENT SINGLE SECONDARY |
| Mounting Method | THREADED HOLE(S) SINGLE GROUPTHREADED HOLE(S) SINGLE GROUP |
| Winding Conductor Size | 0.03196 INCHES AMERICAN WIRE GAGE SINGLE COMPONENT SINGLE PRIMARY0.03196 INCHES AMERICAN WIRE GAGE SINGLE COMPONENT SINGLE PRIMARY IN |
| Coil Form Type | SOLID SINGLE COMPONENTSOLID SINGLE COMPONENT |
| Winding Function and Quantity | 1 PRIMARY AND 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT1 SECONDARY SINGLE COMPONENT |
| Distance Between Mounting Facility Centers | 0.750 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP0.750 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN |
| Nominal Thread Size | 0.138 INCHES SINGLE GROUP0.138 INCHES SINGLE GROUP IN |
| Body Length | 0.875 INCHES NOMINAL0.875 INCHES NOMINAL IN |
| Rating Method | WINDING TURNS SINGLE COMPONENT SINGLE PRIMARYWINDING TURNS SINGLE COMPONENT SINGLE PRIMARY |
| Reliability Indicator | NOT ESTABLISHEDNOT ESTABLISHED |
| Frequency Rating | 70.0 MEGAHERTZ MINIMUM AND 70.0 MEGAHERTZ MINIMUM AND 100.0 MEGAHERTZ MAXIMUM SINGLE COMPONENT100.0 MEGAHERTZ MAXIMUM SINGLE COMPONENT |
| Thread Quantity Per Inch | 32 SINGLE GROUP32 SINGLE GROUP |
| Terminal Type and Quantity | 4 WIRE LEAD4 WIRE LEAD |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) SINGLE GROUPUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP |
| 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 |
|---|---|
| 51C1162 | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple (USA) |
| S61-555B | Smart Machines, Inc. Dba Barker and Williamson (USA) |
| Reference | Meaning |
|---|---|
| S61-555B | 5/9 Secondary reference Barker & Williamson |
| 1585T103 | 3/9 Design control — primary reference Link Communications Inc |
NSN 5950-00-243-3854 is a Transformer,radio Frequency, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple, classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-00-243-3854 has 2 manufacturer part numbers on file: 51C1162 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple), S61-555B (Smart Machines, Inc. Dba Barker and Williamson).
Key specifications for 51C1162: Mounting Facility Quantity: 2 SINGLE GROUP2 SINGLE GROUP; Inclosure Type: OPENOPEN; Body Outside Diameter: 0.375 INCHES NOMINAL0.375 INCHES NOMINAL IN; Turn Quantity: 3-1/2 SINGLE COMPONENT SINGLE PRIMARY3-1/2 SINGLE COMPONENT SINGLE PRIMARY. 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.
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.