The Coil,telephone, cataloged under National Stock Number 5950-00-189-5810, 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 17 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through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government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 | 5950-00-189-5810 |
| Primary Part Number | A40186 |
| 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 | 4.188 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 | 3.281 INCHES NOMINAL IN |
| DC Resistance Rating in Ohms | 35.500 SINGLE COMPONENT FIRST WINDING |
| DC Resistance Rating in Ohms | 35.500 SINGLE COMPONENT SECOND WINDING |
| DC Resistance Rating in Ohms | 51.000 SINGLE COMPONENT FOURTH WINDING |
| DC Resistance Rating in Ohms | 51.000 SINGLE COMPONENT THIRD WINDING |
| Reliability Indicator | NOT ESTABLISHED |
| Winding Quantity | 4 SINGLE COMPONENT |
| Thread Quantity Per Inch | 32 SINGLE GROUP |
| Terminal Type and Quantity | 8 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 |
|---|---|
| A40186 PRIMARY | Telephone Company of America Incorporated (USA) |
| 175AREPEATINGC0IL | Lucent Technologies Inc Corporate Headquarters (USA) |
| Reference | Meaning |
|---|---|
| D162038 | 5/9 Secondary reference At and T Corp |
| D162038TYPE175A | 5/9 Secondary reference At and T Corp |
| 175A | 5/9 Secondary reference At and T Corp |
| 175A | 5/9 Secondary reference American Telephone and Telegraph Co |
| D162038TYPE175A | 5/9 Secondary reference American Telephone and Telegraph Co |
| 175AREPEATINGC0IL | 5/9 Secondary reference American Telephone and Telegraph Co |
| D162038 | 5/9 Secondary reference American Telephone and Telegraph Co |
| 175AREPEATINGC0IL | 5/9 Secondary reference Lucent Technologies Inc Dba Federal Marketing Group |
NSN 5950-00-189-5810 is a Coil,telephone, manufactured by Telephone Company of America Incorporated, classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-00-189-5810 has 2 manufacturer part numbers on file: A40186 (Telephone Company of America Incorporated), 175AREPEATINGC0IL (Lucent Technologies Inc Corporate Headquarters).
5 possible matches (shared part number, not a government interchangeability claim): 4320-00-212-9431, 4020-00-238-7734, 6105-00-351-6873. Verify interchangeability with system specifications before substitution.
Key specifications for A40186: Mounting Facility Quantity: 2 SINGLE GROUP; Inclosure Type: FULLY INCLOSED; Mounting Method: THREADED STUD(S) SINGLE GROUP; Body Width: 1.688 INCHES NOMINAL IN. 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.