PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

G40018Transformer,power

Telephone Company of America Incorporated · NSN 5950-00-356-1779 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-356-1779 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-356-1779. Primary manufacturer part number: G40018.
Features
  • Transformer,power — FSC 5950
  • Winding Operating Voltage: 230.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
  • Mounting Method: SLOT SINGLE GROUP
  • Winding Operating Voltage: 115.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY
  • Maximum Transformer Power Rating: 1.5 KILOVOLT-AMPERE SINGLE COMPONENT
  • Center to Center Distance Between Mounting Facilities Parallel to Width: 5.875 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Mounting Facility Quantity: 3 SINGLE GROUP
  • Mounting Slot Width: 0.437 INCHES NOMINAL SINGLE GROUP IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,power, cataloged under National Stock Number 5950-00-356-1779, 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 Telephone Company of America Incorporated. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-356-1779
Primary Part NumberG40018
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerTelephone Company of America Incorporated
StatusACTIVE
Winding Operating Voltage230.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Mounting MethodSLOT SINGLE GROUP
Winding Operating Voltage115.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Maximum Transformer Power Rating1.5 KILOVOLT-AMPERE SINGLE COMPONENT
Center to Center Distance Between Mounting Facilities Parallel to Width5.875 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Mounting Facility Quantity3 SINGLE GROUP
Mounting Slot Width0.437 INCHES NOMINAL SINGLE GROUP IN
Frequency Rating50.0 HERTZ NOMINAL AND 60.0 HERTZ NOMINAL SINGLE COMPONENT
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Center to Center Distance Between Mounting Facilities Parallel to Length10.188 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Winding Operating Current13.0 AMPERES AC NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Reliability IndicatorNOT ESTABLISHED
Inclosure TypeFULLY INCLOSED
Terminal Type and Quantity1 CONNECTOR, RECEPTACLE
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5310-00-169-755820868 INTERCHANGEABLE
Locknut,shuttle Stop
Mid-America Aerotech, Llc
6110-00-170-6520 INTERCHANGEABLE
Regulator,voltage
5133-00-266-9228 INTERCHANGEABLE
Drill,twist
5985-00-327-6704H-5001 INTERCHANGEABLE
Horn,waveguide
Caes Systems Llc
5950-00-504-8788651805-006 INTERCHANGEABLE
Transformer,power
Bae Systems Information and Electronic Systems Integration Inc. Div Bae Systems Information & Electronic Systems Integration Inc
4820-00-558-124420868 INTERCHANGEABLE
Seat,valve
Schneider Electric Systems Usa Inc
5310-00-825-296254A50A97 INTERCHANGEABLE
Washer,flat
Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
6615-00-996-1354 INTERCHANGEABLE
Gate,damper,gyroscope
5950-01-131-23614038897 INTERCHANGEABLE
Reactor
Honeywell International Inc. Dba Honeywell International
Cross-Reference Index
Part NumberManufacturer
PEI 9570 Precision Electronics, Inc (USA)
G40018 PRIMARY Telephone Company of America Incorporated (USA)
SC-D-9796 PRIMARY Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir (USA)
20868 PRIMARY Freed Transformer Co (USA)
H5001 Goodwill Engineering Designs (USA)
Related Parts
5310-00-169-7558INTERCHANGEABLE
LOCKNUT,SHUTTLE STOP
20868
6110-00-170-6520INTERCHANGEABLE
REGULATOR,VOLTAGE
5133-00-266-9228INTERCHANGEABLE
DRILL,TWIST
5985-00-327-6704INTERCHANGEABLE
HORN,WAVEGUIDE
H-5001
5950-00-504-8788INTERCHANGEABLE
TRANSFORMER,POWER
651805-006
4820-00-558-1244INTERCHANGEABLE
SEAT,VALVE
20868
5310-00-825-2962INTERCHANGEABLE
WASHER,FLAT
54A50A97
6615-00-996-1354INTERCHANGEABLE
GATE,DAMPER,GYROSCOPE
5950-01-131-2361INTERCHANGEABLE
REACTOR
4038897

Frequently Asked Questions

What is NSN 5950-00-356-1779?

NSN 5950-00-356-1779 is a Transformer,power, manufactured by Telephone Company of America Incorporated, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-356-1779?

NSN 5950-00-356-1779 has 5 cross-referenced part numbers: PEI 9570 (Precision Electronics, Inc), G40018 (Telephone Company of America Incorporated), SC-D-9796 (Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir), 20868 (Freed Transformer Co), H5001 (Goodwill Engineering Designs).

What NSN replaces 5950-00-356-1779?

There are 9 known substitutes for 5950-00-356-1779: 5310-00-169-7558, 6110-00-170-6520, 5133-00-266-9228 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of G40018?

Key specifications for G40018: Winding Operating Voltage: 230.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY; Mounting Method: SLOT SINGLE GROUP; Overall Width: 6.125 INCHES NOMINAL IN; Winding Operating Voltage: 115.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY. 18 total characteristics are documented in the Federal Logistics Information System.

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