The Coil,telephone, cataloged under National Stock Number 5950-00-189-5820, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Lucent Technologies Inc Corporate Headquarters. Government technical data includes 11 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5950-00-189-5820 |
| Primary Part Number | BL109728ISSUE1 |
| Item Name | Coil,telephone |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | Lucent Technologies Inc Corporate Headquarters |
| Status | ACTIVE |
| Mounting Facility Quantity | 2 SINGLE GROUP |
| Inclosure Type | FULLY INCLOSED |
| Body Width | 3.125 INCHES NOMINAL IN |
| Body Height | 1.719 INCHES NOMINAL IN |
| Distance Between Mounting Facility Centers | 2.250 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN |
| Nominal Thread Size | 0.164 INCHES SINGLE GROUP IN |
| Body Length | 5.156 INCHES NOMINAL IN |
| Winding Quantity | 6 SINGLE COMPONENT |
| Thread Quantity Per Inch | 32 SINGLE GROUP |
| Terminal Type and Quantity | 12 TAB, SOLDER LUG |
| 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 |
|---|---|
| BL109728ISSUE1 | Lucent Technologies Inc Corporate Headquarters (USA) |
| Reference | Meaning |
|---|---|
| D162037 | 5/9 Secondary reference American Telephone and Telegraph Co |
| BL109728ISSUE1 | 5/9 Secondary reference American Telephone and Telegraph Co |
| 173C | 3/9 Design control — primary reference American Telephone and Telegraph Co |
| 173C | 5/9 Secondary reference Lucent Technologies Inc Dba Federal Marketing Group |
| 173C | C/1 Advisory reference — outside the item-of-supply concept Lucent Technologies Inc Corporate Headquarters |
| BL109728ISSUE1 | 5/9 Secondary reference Lucent Technologies Inc Dba Federal Marketing Group |
NSN 5950-00-189-5820 is a Coil,telephone, manufactured by Lucent Technologies Inc Corporate Headquarters, classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-00-189-5820 has 1 manufacturer part number on file: BL109728ISSUE1 (Lucent Technologies Inc Corporate Headquarters).
2 possible matches (shared part number, not a government interchangeability claim): 5930-00-296-5184, 5930-00-669-9958. Verify interchangeability with system specifications before substitution.
Key specifications for BL109728ISSUE1: Mounting Facility Quantity: 2 SINGLE GROUP; Inclosure Type: FULLY INCLOSED; Body Width: 3.125 INCHES NOMINAL IN; Body Height: 1.719 INCHES NOMINAL IN. 11 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.