PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

E1U26Transformer,current

Mcnab, Incorporated · NSN 5950-01-269-8240 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-01-269-8240 — this item is cataloged by the U.S. Government under National Stock Number 5950-01-269-8240. Primary manufacturer part number: E1U26.
Features
  • Transformer,current — FSC 5950
  • Mounting Facility Quantity: 4 SINGLE GROUP
  • Winding Function and Quantity: 1 PRIMARY AND 2 SECONDARY SINGLE COMPONENT
  • Winding Operating Voltage: 15.00 AC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY
  • Winding Operating Voltage: 115.00 AC VOLTS NOMINAL SINGLE COMPONENT FIRST SECONDARY
  • Frequency Rating: 60.0 HERTZ NOMINAL SINGLE COMPONENT
  • Inclosure Type: HERMETICALLY SEALED
  • Input-Output Phase Relationship: SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,current, cataloged under National Stock Number 5950-01-269-8240, 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 Mcnab, Incorporated. Government technical data includes 11 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. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-01-269-8240
Primary Part NumberE1U26
Item NameTransformer,current
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerMcnab, Incorporated
StatusACTIVE
Mounting Facility Quantity4 SINGLE GROUP
Winding Function and Quantity1 PRIMARY AND 2 SECONDARY SINGLE COMPONENT
Winding Operating Voltage15.00 AC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY
Winding Operating Voltage115.00 AC VOLTS NOMINAL SINGLE COMPONENT FIRST SECONDARY
Frequency Rating60.0 HERTZ NOMINAL SINGLE COMPONENT
Inclosure TypeHERMETICALLY SEALED
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Mounting MethodUNTHREADED HOLE(S) SINGLE GROUP
Winding Operating Voltage115.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Reliability IndicatorNOT ESTABLISHED
Terminal Type and Quantity6 TAB, SOLDER LUG
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5133-00-266-9247 INTERCHANGEABLE
Drill,twist
5330-00-328-4510 INTERCHANGEABLE
Gasket
5325-00-631-529220637 INTERCHANGEABLE
Ring,retaining
Kaydon Ring & Seal Inc Dba Skf Precision Technologies
5342-00-777-764110-30191-23 INTERCHANGEABLE
Latch Assembly,cowl
The Boeing Company Div Legacy Wichita
1005-00-867-534511644080 INTERCHANGEABLE
Lining,clutch and B
U S Army Tank Automotive Command Amsta-Im-Mm
1660-00-942-856020637 INTERCHANGEABLE
Fitting,hose
Avox Systems Inc Dba Avox Systems Inc
5970-01-010-8903 INTERCHANGEABLE
Insulator,washer
5306-01-099-295120637 INTERCHANGEABLE
Bolt
Midwest Gear & Tool, Inc.
5975-01-298-3729206-37 INTERCHANGEABLE
Conduit Assembly,flexible
Dcx-Chol Enterprises, Inc.
4730-01-517-1513C20637 INTERCHANGEABLE
Coupling,hose
Hydrasearch Company, Llc
Cross-Reference Index
Part NumberManufacturer
E1U26 Mcnab, Incorporated (USA)
14102N PIECE 26 Mcnab, Incorporated (USA)
20637 Magnetic Windings Company Inc (USA)
20637 Thermal Controls Div of Magnetic Windings Co (USA)
Related Parts
5133-00-266-9247INTERCHANGEABLE
DRILL,TWIST
5330-00-328-4510INTERCHANGEABLE
GASKET
5325-00-631-5292INTERCHANGEABLE
RING,RETAINING
20637
5342-00-777-7641INTERCHANGEABLE
LATCH ASSEMBLY,COWL
10-30191-23
1005-00-867-5345INTERCHANGEABLE
LINING,CLUTCH AND B
11644080
1660-00-942-8560INTERCHANGEABLE
FITTING,HOSE
20637
5970-01-010-8903INTERCHANGEABLE
INSULATOR,WASHER
5306-01-099-2951INTERCHANGEABLE
BOLT
20637
5975-01-298-3729INTERCHANGEABLE
CONDUIT ASSEMBLY,FLEXIBLE
206-37
4730-01-517-1513INTERCHANGEABLE
COUPLING,HOSE
C20637

Frequently Asked Questions

What is NSN 5950-01-269-8240?

NSN 5950-01-269-8240 is a Transformer,current, manufactured by Mcnab, Incorporated, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-01-269-8240?

NSN 5950-01-269-8240 has 4 cross-referenced part numbers: E1U26 (Mcnab, Incorporated), 14102N PIECE 26 (Mcnab, Incorporated), 20637 (Magnetic Windings Company Inc), 20637 (Thermal Controls Div of Magnetic Windings Co).

What NSN replaces 5950-01-269-8240?

There are 10 known substitutes for 5950-01-269-8240: 5133-00-266-9247, 5330-00-328-4510, 5325-00-631-5292 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of E1U26?

Key specifications for E1U26: Mounting Facility Quantity: 4 SINGLE GROUP; Winding Function and Quantity: 1 PRIMARY AND 2 SECONDARY SINGLE COMPONENT; Winding Operating Voltage: 15.00 AC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY; Winding Operating Voltage: 115.00 AC VOLTS NOMINAL SINGLE COMPONENT FIRST SECONDARY. 12 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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