PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

178ACoil,telephone

Lucent Technologies Inc Corporate Headquarters · NSN 5950-00-646-4326 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-646-4326 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-646-4326. Primary manufacturer part number: 178A.
Features
  • Coil,telephone — FSC 5950
  • Body Height: 3.750 INCHES NOMINAL IN
  • Body Width: 1.188 INCHES NOMINAL IN
  • DC Resistance Rating in Ohms: 2.100 SINGLE COMPONENT THIRD WINDING
  • DC Resistance Rating in Ohms: 562.300 SINGLE COMPONENT FIRST WINDING
  • Mounting Method: THREADED HOLE(S) SINGLE GROUP
  • Thread Quantity Per Inch: 32 SINGLE GROUP
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Coil,telephone, cataloged under National Stock Number 5950-00-646-4326, is classified within Federal Supply Class 5950 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Lucent Technologies Inc Corporate Headquarters. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5950-00-646-4326
Primary Part Number178A
Item NameCoil,telephone
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerLucent Technologies Inc Corporate Headquarters
StatusCANCELLED
Body Height3.750 INCHES NOMINAL IN
Body Width1.188 INCHES NOMINAL IN
DC Resistance Rating in Ohms2.100 SINGLE COMPONENT THIRD WINDING
DC Resistance Rating in Ohms562.300 SINGLE COMPONENT FIRST WINDING
Mounting MethodTHREADED HOLE(S) SINGLE GROUP
Thread Quantity Per Inch32 SINGLE GROUP
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Winding Quantity3 SINGLE COMPONENT
Inclosure TypeFULLY INCLOSED
Terminal Type and Quantity8 TAB, SOLDER LUG
Nominal Thread Size0.138 INCHES SINGLE GROUP IN
DC Resistance Rating in Ohms15.800 SINGLE COMPONENT SECOND WINDING
Body Length1.688 INCHES NOMINAL IN
Mounting Facility Quantity2 SINGLE GROUP
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 6
5340-00-019-2938178A INTERCHANGEABLE
Padlock
Eastern Co the Ccl Security Products
5210-00-271-9944178A INTERCHANGEABLE
Gage,fillet and Radius
L.s. Starrett Company (the) Div Tool Division
5360-00-292-2647178A INTERCHANGEABLE
Spring,helical,compression
Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions
4520-01-157-3592I-78A INTERCHANGEABLE
Increaser,heating-Air Conditioni
Speko Products Inc
6625-01-312-1935178A INTERCHANGEABLE
Wave Form Synthesizer
Fluke Corp
4720-01-528-8798178A INTERCHANGEABLE
Hose,nonmetallic
Associate Engineering Corp
Cross-Reference Index
Part NumberManufacturer
178A Lucent Technologies Inc Corporate Headquarters (USA)
178A American Telephone and Telegraph Co (USA)
178AINDUCT0R American Telephone and Telegraph Co (USA)
178A At and T Corp (USA)
Related Parts
5340-00-019-2938INTERCHANGEABLE
PADLOCK
178A
5210-00-271-9944INTERCHANGEABLE
GAGE,FILLET AND RADIUS
178A
5360-00-292-2647INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
178A
4520-01-157-3592INTERCHANGEABLE
INCREASER,HEATING-AIR CONDITIONI
I-78A
6625-01-312-1935INTERCHANGEABLE
WAVE FORM SYNTHESIZER
178A
4720-01-528-8798INTERCHANGEABLE
HOSE,NONMETALLIC
178A

Frequently Asked Questions

What is NSN 5950-00-646-4326?

NSN 5950-00-646-4326 is a Coil,telephone, manufactured by Lucent Technologies Inc Corporate Headquarters, classified under FSC 5950 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5950-00-646-4326?

NSN 5950-00-646-4326 has 4 cross-referenced part numbers: 178A (Lucent Technologies Inc Corporate Headquarters), 178A (American Telephone and Telegraph Co), 178AINDUCT0R (American Telephone and Telegraph Co), 178A (At and T Corp).

What NSN replaces 5950-00-646-4326?

There are 6 known substitutes for 5950-00-646-4326: 5340-00-019-2938, 5210-00-271-9944, 5360-00-292-2647 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 178A?

Key specifications for 178A: Body Height: 3.750 INCHES NOMINAL IN; Body Width: 1.188 INCHES NOMINAL IN; DC Resistance Rating in Ohms: 2.100 SINGLE COMPONENT THIRD WINDING; DC Resistance Rating in Ohms: 562.300 SINGLE COMPONENT FIRST WINDING. 14 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5950-00-646-4326 still in active supply?

NSN 5950-00-646-4326 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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