The Transformer,power, cataloged under National Stock Number 5950-01-210-0120, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Keytronics, Inc. Div Api Technologies Corp- Magnetics. Government technical data includes 20 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5950-01-210-0120 |
| Primary Part Number | K6172 |
| Item Name | Transformer,power |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | Keytronics, Inc. Div Api Technologies Corp- Magnetics |
| Status | ACTIVE |
| Transformer Winding Connection Type | TAYLOR |
| Mounting Facility Quantity | 4 SINGLE GROUP |
| Inclosure Type | FULLY INCLOSED |
| Center to Center Distance Between Mounting Facilities Parallel to Length | 1.813 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN |
| Input-Output Phase Relationship | THREE PHASE TO THREE PHASE SINGLE COMPONENT |
| Mounting Method | UNTHREADED HOLE(S) SINGLE GROUP |
| Maximum Transformer Power Rating | 9.0 WATTS SINGLE COMPONENT |
| Mounting Hole Diameter | 0.152 INCHES MINIMUM AND 0.157 INCHES MAXIMUM SINGLE GROUP IN |
| Winding Function and Quantity | 1 PRIMARY AND 3 SECONDARY SINGLE COMPONENT |
| Winding Operating Current | 5.0 AMPERES AC MAXIMUM SINGLE COMPONENT FIRST SECONDARY |
| Winding Operating Current | 0.3 AMPERES AC MAXIMUM SINGLE COMPONENT SECOND SECONDARY |
| Winding Operating Current | 0.8 AMPERES AC MAXIMUM SINGLE COMPONENT THIRD SECONDARY |
| Reliability Indicator | NOT ESTABLISHED |
| Frequency Rating | 400.0 HERTZ NOMINAL SINGLE COMPONENT |
| Center to Center Distance Between Mounting Facilities Parallel to Width | 1.750 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN |
| Winding Operating Voltage | 115.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY |
| Winding Operating Voltage | 24.00 AC VOLTS MINIMUM AND 32.00 AC VOLTS MAXIMUM SINGLE COMPONENT FIRST SECONDARY |
| Winding Operating Voltage | 43.00 AC VOLTS MINIMUM AND 51.00 AC VOLTS MAXIMUM SINGLE COMPONENT THIRD SECONDARY |
| Winding Operating Voltage | 68.00 AC VOLTS MINIMUM AND 80.00 AC VOLTS MAXIMUM SINGLE COMPONENT SECOND SECONDARY |
| Terminal Type and Quantity | 13 WIRE LEAD |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
NSN 5950-01-210-0120 is a Transformer,power, manufactured by Keytronics, Inc. Div Api Technologies Corp- Magnetics, classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-01-210-0120 has 2 manufacturer part numbers on file: K6172 (Keytronics, Inc. Div Api Technologies Corp- Magnetics), S102 (B G Laboratories Inc.).
Key specifications for K6172: Overall Height: 1.400 INCHES MAXIMUM IN; Transformer Winding Connection Type: TAYLOR; Mounting Facility Quantity: 4 SINGLE GROUP; Inclosure Type: FULLY INCLOSED. 20 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.