PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

BC99-26Transformer,power

Omega Associates, Inc. Dba Omega Associates Inc · NSN 5950-00-777-2017 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-777-2017 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-777-2017. Primary manufacturer part number: BC99-26.
Features
  • Transformer,power — FSC 5950
  • Reliability Indicator: NOT ESTABLISHED
  • Nominal Thread Size: 0.112 INCHES SINGLE GROUP IN
  • Winding Operating Voltage: 75.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY
  • Winding Function and Quantity: 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
  • Mounting Facility Quantity: 4 SINGLE GROUP
  • Center to Center Distance Between Mounting Facilities Parallel to Width: 1.031 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Input-Output Phase Relationship: THREE PHASE TO THREE PHASE SINGLE COMPONENT
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,power, cataloged under National Stock Number 5950-00-777-2017, 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 Omega Associates, Inc. Dba Omega Associates Inc. Government technical data includes 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-777-2017
Primary Part NumberBC99-26
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerOmega Associates, Inc. Dba Omega Associates Inc
StatusACTIVE
Reliability IndicatorNOT ESTABLISHED
Nominal Thread Size0.112 INCHES SINGLE GROUP IN
Winding Operating Voltage75.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Mounting Facility Quantity4 SINGLE GROUP
Center to Center Distance Between Mounting Facilities Parallel to Width1.031 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Input-Output Phase RelationshipTHREE PHASE TO THREE PHASE SINGLE COMPONENT
Criticality Code JustificationFEAT
Inclosure TypeFULLY INCLOSED
Winding Operating Current15.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT SINGLE SECONDARY
Winding Operating Voltage200.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Frequency Rating320.0 HERTZ MINIMUM AND 480.0 HERTZ MAXIMUM SINGLE COMPONENT
Mounting MethodTHREADED HOLE(S) SINGLE GROUP
Transformer Winding Connection TypeWYE-WYE
Center to Center Distance Between Mounting Facilities Parallel to Length1.000 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Thread Quantity Per Inch40 SINGLE GROUP
Body Length1.750 INCHES NOMINAL IN
Terminal Type and Quantity7 TAB, SOLDER LUG
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
4820-00-036-1526N10795 INTERCHANGEABLE
Parts Kit,globe Valve
Leslie Controls, Inc. Dba Leslie Controls Inc
5136-00-189-7812 INTERCHANGEABLE
Tap,thread Cutting
4820-00-830-283510795 INTERCHANGEABLE
Disk,valve
Conax Florida Corporation
5306-01-131-816684725-5H6 INTERCHANGEABLE
Bolt,shear
Sps Technologies, Llc Dba PB Fasteners
3530-01-180-017710795 INTERCHANGEABLE
Presser Foot,sewing Machine
Consolidated Sewing Machine Corp
5950-01-228-5551 INTERCHANGEABLE
Coil,radio Frequency
Cross-Reference Index
Part NumberManufacturer
BX-9522 Baltimore Transformer Co (USA)
BC99-26 PRIMARY Omega Associates, Inc. Dba Omega Associates Inc (USA)
910C930-1 Westinghouse Electric Corp (USA)
MP842 Magnetic Products Inc Affil of National Wire and Cable Co Inc (USA)
10795 Inrcore, Llc Div Inrcore (USA)
59T14I1005 Omega Associates, Inc. Dba Omega Associates Inc (USA)
HY-3206 Hytronics Corp. (USA)
Related Parts
4820-00-036-1526INTERCHANGEABLE
PARTS KIT,GLOBE VALVE
N10795
5136-00-189-7812INTERCHANGEABLE
TAP,THREAD CUTTING
4820-00-830-2835INTERCHANGEABLE
DISK,VALVE
10795
5306-01-131-8166INTERCHANGEABLE
BOLT,SHEAR
84725-5H6
3530-01-180-0177INTERCHANGEABLE
PRESSER FOOT,SEWING MACHINE
10795
5950-01-228-5551INTERCHANGEABLE
COIL,RADIO FREQUENCY

Frequently Asked Questions

What is NSN 5950-00-777-2017?

NSN 5950-00-777-2017 is a Transformer,power, manufactured by Omega Associates, Inc. Dba Omega Associates Inc, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-777-2017?

NSN 5950-00-777-2017 has 7 cross-referenced part numbers: BX-9522 (Baltimore Transformer Co), BC99-26 (Omega Associates, Inc. Dba Omega Associates Inc), 910C930-1 (Westinghouse Electric Corp), MP842 (Magnetic Products Inc Affil of National Wire and Cable Co Inc), 10795 (Inrcore, Llc Div Inrcore) and 2 more.

What NSN replaces 5950-00-777-2017?

There are 6 known substitutes for 5950-00-777-2017: 4820-00-036-1526, 5136-00-189-7812, 4820-00-830-2835 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of BC99-26?

Key specifications for BC99-26: Reliability Indicator: NOT ESTABLISHED; Nominal Thread Size: 0.112 INCHES SINGLE GROUP IN; Winding Operating Voltage: 75.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY; Special Features: WEAPON SYSTEM ESSENTIAL. 23 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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