The Coil,telephone, cataloged under National Stock Number 5950-00-228-0364, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Telephone Company of America Incorporated. Government technical data includes 15 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5950-00-228-0364 |
| Primary Part Number | A40168 |
| Item Name | Coil,telephone |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | Telephone Company of America Incorporated |
| Status | ACTIVE |
| Mounting Facility Quantity | 2 SINGLE GROUP |
| Inclosure Type | FULLY INCLOSED |
| Mounting Method | THREADED STUD(S) SINGLE GROUP |
| Body Width | 1.688 INCHES NOMINAL IN |
| Body Height | 1.688 INCHES NOMINAL IN |
| Distance Between Mounting Facility Centers | 1.844 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN |
| Nominal Thread Size | 0.138 INCHES SINGLE GROUP IN |
| Body Length | 5.625 INCHES NOMINAL IN |
| Rating Method | ELECTRICAL SINGLE COMPONENT SINGLE WINDING |
| DC Resistance Rating in Ohms | 165.000 SINGLE COMPONENT SINGLE WINDING |
| Reliability Indicator | NOT ESTABLISHED |
| Winding Quantity | 1 SINGLE COMPONENT |
| Thread Quantity Per Inch | 32 SINGLE GROUP |
| Terminal Type and Quantity | 2 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 |
|---|---|
| A40168 PRIMARY | Telephone Company of America Incorporated (USA) |
| Reference | Meaning |
|---|---|
| 274R | 5/9 Secondary reference At and T Corp |
| 274R | 5/9 Secondary reference American Telephone and Telegraph Co |
| 274R | C/1 Advisory reference — outside the item-of-supply concept Lucent Technologies Inc Corporate Headquarters |
| 274RINDUCT0R | 5/9 Secondary reference American Telephone and Telegraph Co |
NSN 5950-00-228-0364 is a Coil,telephone, manufactured by Telephone Company of America Incorporated, classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-00-228-0364 has 1 manufacturer part number on file: A40168 (Telephone Company of America Incorporated).
1 possible match (shared part number, not a government interchangeability claim): 1720-00-566-1365. Verify interchangeability with system specifications before substitution.
Key specifications for A40168: Mounting Facility Quantity: 2 SINGLE GROUP; Inclosure Type: FULLY INCLOSED; Mounting Method: THREADED STUD(S) SINGLE GROUP; Body Width: 1.688 INCHES NOMINAL IN. 15 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.