The Coil,radio Frequency, cataloged under National Stock Number 5950-00-217-1685, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Viking Technologies, Ltd.. Government technical data includes 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5950-00-217-1685 |
| Primary Part Number | SA4021 |
| Item Name | Coil,radio Frequency |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | Viking Technologies, Ltd. |
| Status | ACTIVE |
| Body Outside Diameter | 1.250 INCHES NOMINAL IN |
| Turn Quantity | 103 SINGLE COMPONENT SINGLE WINDING |
| Mounting Method | BRACKET(S) SINGLE GROUP |
| Inductance Rating | 1.20 MILLIHENRIES NOMINAL SINGLE COMPONENT SINGLE WINDING |
| Winding Conductor Size | 0.01594 INCHES AMERICAN WIRE GAGE SINGLE COMPONENT SINGLE WINDING IN |
| Coil Form Type | HOLLOW SINGLE COMPONENT |
| Body Length | 4.500 INCHES NOMINAL IN |
| Winding Operating Current | 1.5 AMPERES DC MAXIMUM SINGLE COMPONENT SINGLE WINDING |
| DC Resistance Rating in Ohms | 2.100 SINGLE COMPONENT SINGLE WINDING |
| Terminal Type and Quantity | 2 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 5950-00-217-1685 is a Coil,radio Frequency, manufactured by Viking Technologies, Ltd., classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-00-217-1685 has 2 manufacturer part numbers on file: SA4021 (Viking Technologies, Ltd.), 5A4021 (Viking Technologies, Ltd.).
1 possible match (shared part number, not a government interchangeability claim): 5961-00-333-7556. Verify interchangeability with system specifications before substitution.
Key specifications for SA4021: Body Outside Diameter: 1.250 INCHES NOMINAL IN; Turn Quantity: 103 SINGLE COMPONENT SINGLE WINDING; Mounting Method: BRACKET(S) SINGLE GROUP; Inductance Rating: 1.20 MILLIHENRIES NOMINAL SINGLE COMPONENT SINGLE WINDING. 10 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.