The Transformer,power, cataloged under National Stock Number 5950-00-477-2853, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Yale Industrial Products, Inc. Div Duff Norton Company. Government technical data includes 17 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5950-00-477-2853 |
| Primary Part Number | JF-821 |
| Item Name | Transformer,power |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | Yale Industrial Products, Inc. Div Duff Norton Company |
| Status | ACTIVE |
| Mounting Facility Quantity | 2 SINGLE GROUP |
| Inclosure Type | OPEN |
| Winding Power Rating | 10.0 VOLTS-AMPERES SINGLE COMPONENT SINGLE SECONDARY |
| Input-Output Phase Relationship | SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT |
| Mounting Method | THREADED HOLE(S) SINGLE GROUP |
| Body Width | 1.995 INCHES MINIMUM AND 2.005 INCHES MAXIMUM IN |
| Body Height | 2.245 INCHES MINIMUM AND 2.255 INCHES MAXIMUM IN |
| Winding Function and Quantity | 2 PRIMARY AND 1 SECONDARY SINGLE COMPONENT |
| Distance Between Mounting Facility Centers | 2.812 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN |
| Nominal Thread Size | 0.190 INCHES SINGLE GROUP IN |
| Body Length | 3.745 INCHES MINIMUM AND 3.755 INCHES MAXIMUM IN |
| Reliability Indicator | NOT ESTABLISHED |
| Frequency Rating | 50.0 HERTZ NOMINAL OR 60.0 HERTZ NOMINAL SINGLE COMPONENT |
| Winding Operating Voltage | 110.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY |
| Winding Operating Voltage | 220.00 AC VOLTS NOMINAL SINGLE COMPONENT ALL PRIMARY |
| Terminal Type and Quantity | 6 WIRE LEAD |
| Thread Series Designator | UNF 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 |
|---|---|
| JF-821 PRIMARY | Yale Industrial Products, Inc. Div Duff Norton Company (USA) |
| Reference | Meaning |
|---|---|
| WR-3-680-1 GIG 7-3A INDEX NO 4 | C/1 Advisory reference — outside the item-of-supply concept Yale Industrial Products, Inc. Div Duff Norton Company |
| M2438 | 5/9 Secondary reference Melco Engineering Corporation Dba Melco Engineering |
NSN 5950-00-477-2853 is a Transformer,power, manufactured by Yale Industrial Products, Inc. Div Duff Norton Company, classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-00-477-2853 has 1 manufacturer part number on file: JF-821 (Yale Industrial Products, Inc. Div Duff Norton Company).
1 possible match (shared part number, not a government interchangeability claim): 5950-00-952-1569. Verify interchangeability with system specifications before substitution.
Key specifications for JF-821: Mounting Facility Quantity: 2 SINGLE GROUP; Inclosure Type: OPEN; Winding Power Rating: 10.0 VOLTS-AMPERES SINGLE COMPONENT SINGLE SECONDARY; Input-Output Phase Relationship: SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT. 17 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.