The Transformer,power, cataloged under National Stock Number 5950-00-657-7708, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Lockheed Martin Corporation Div Rms - Mitchel Field. Government technical data includes 22 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5950-00-657-7708 |
| Primary Part Number | 618506 |
| Item Name | Transformer,power |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | Lockheed Martin Corporation Div Rms - Mitchel Field |
| Status | ACTIVE |
| Mounting Facility Quantity | 2 SINGLE GROUP |
| Inclosure Type | HERMETICALLY SEALED |
| Input-Output Phase Relationship | SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT |
| Mounting Method | THREADED HOLE(S) SINGLE GROUP |
| Body Width | 0.750 INCHES MAXIMUM IN |
| Body Height | 0.844 INCHES MAXIMUM IN |
| Winding Function and Quantity | 2 PRIMARY AND 2 SECONDARY SINGLE COMPONENT |
| Winding Shielding Method | INTERNAL SHIELD GROUNDED TO INCLOSURE AND BROUGHT OUT TO TERMINAL SINGLE COMPONENT |
| Distance Between Mounting Facility Centers | 1.562 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN |
| Nominal Thread Size | 0.086 INCHES SINGLE GROUP IN |
| Body Length | 1.875 INCHES MAXIMUM IN |
| Winding Operating Current | 57.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT SECOND SECONDARY |
| Winding Operating Current | 80.0 MICROAMPERES AC MAXIMUM SINGLE COMPONENT FIRST SECONDARY |
| Reliability Indicator | NOT ESTABLISHED |
| Frequency Rating | 400.0 HERTZ NOMINAL SINGLE COMPONENT |
| Thread Quantity Per Inch | 56 SINGLE GROUP |
| Winding Operating Voltage | 0.02 AC VOLTS NOMINAL SINGLE COMPONENT FIRST SECONDARY |
| Winding Operating Voltage | 0.10 AC VOLTS NOMINAL SINGLE COMPONENT FIRST PRIMARY |
| Winding Operating Voltage | 20.00 AC VOLTS NOMINAL SINGLE COMPONENT SECOND PRIMARY |
| Winding Operating Voltage | 3.64 AC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY |
| Terminal Type and Quantity | 11 WIRE LEAD |
| Thread Series Designator | UNIFIED 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 |
|---|---|
| 618506 PRIMARY | Lockheed Martin Corporation Div Rms - Mitchel Field (USA) |
| W2170 | Honeywell International Inc. Dba Honeywell International (USA) |
| PEI 7075 | Precision Electronics, Inc (USA) |
| Reference | Meaning |
|---|---|
| W2170 | 5/9 Secondary reference Cen Electronics a Div of Chloride Power Electronics Inc |
| 618506 | C/1 Advisory reference — outside the item-of-supply concept Honeywell International Inc. Dba Honeywell International |
NSN 5950-00-657-7708 is a Transformer,power, manufactured by Lockheed Martin Corporation Div Rms - Mitchel Field, classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-00-657-7708 has 3 manufacturer part numbers on file: 618506 (Lockheed Martin Corporation Div Rms - Mitchel Field), W2170 (Honeywell International Inc. Dba Honeywell International), PEI 7075 (Precision Electronics, Inc).
Key specifications for 618506: Mounting Facility Quantity: 2 SINGLE GROUP; Inclosure Type: HERMETICALLY SEALED; Input-Output Phase Relationship: SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT; Mounting Method: THREADED HOLE(S) SINGLE GROUP. 22 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.