PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B86Transformer,power

B G Laboratories Inc. · NSN 5950-00-988-7761 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-988-7761 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-988-7761. Primary manufacturer part number: B86.
Features
  • Transformer,power — FSC 5950
  • Reliability Indicator: NOT ESTABLISHED
  • Mounting Hole Diameter: 0.187 INCHES NOMINAL SINGLE GROUP IN
  • Distance Between Mounting Facility Centers: 1.969 INCHES MINIMUM AND 2.031 INCHES MAXIMUM SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Frequency Rating: 50.0 HERTZ NOMINAL OR 60.0 HERTZ NOMINAL SINGLE COMPONENT
  • Mounting Method: BRACKET(S) AND UNTHREADED HOLE(S) SINGLE GROUP
  • Winding Function and Quantity: 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
  • Body Length: 1.719 INCHES MAXIMUM IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,power, cataloged under National Stock Number 5950-00-988-7761, 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 B G Laboratories Inc.. Government technical data includes 16 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. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-988-7761
Primary Part NumberB86
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerB G Laboratories Inc.
StatusACTIVE
Reliability IndicatorNOT ESTABLISHED
Mounting Hole Diameter0.187 INCHES NOMINAL SINGLE GROUP IN
Distance Between Mounting Facility Centers1.969 INCHES MINIMUM AND 2.031 INCHES MAXIMUM SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Frequency Rating50.0 HERTZ NOMINAL OR 60.0 HERTZ NOMINAL SINGLE COMPONENT
Mounting MethodBRACKET(S) AND UNTHREADED HOLE(S) SINGLE GROUP
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Body Length1.719 INCHES MAXIMUM IN
Winding Operating Voltage35.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Inclosure TypeOPEN
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Terminal Type and Quantity4 WIRE LEAD
Winding Operating Voltage7.10 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Features ProvidedTINNED WIRE LEADS
Body Width1.625 INCHES MAXIMUM IN
Mounting Facility Quantity2 SINGLE GROUP
Body Height1.375 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
2920-00-018-55003035 INTERCHANGEABLE
Spark Plug
Allied-Signal Inc Autolite Div
5940-00-156-15098195670 INTERCHANGEABLE
Terminal,lug
Us Army Aviation and Missile Command
5330-00-404-1381455271S60 INTERCHANGEABLE
Seal,plain Encased
Federal-Mogul Corp Government Sales Dept
3030-00-432-1578B86 INTERCHANGEABLE
Belt,v
Muviq Usa, Llc
3110-00-620-4498B86 INTERCHANGEABLE
Bearing,roller,needle
Timken Aerospace, Inc Dba Torrington Product
6625-00-866-4224B-8-6 INTERCHANGEABLE
Lead,test
Fluke Electronics Corp
3110-00-896-9314B86 INTERCHANGEABLE
Bearing,needle
Timken Aerospace, Inc Dba Torrington Product
5310-00-954-7183B8-6 INTERCHANGEABLE
Washer,flat
Roller Bearing Co of America, Inc Div Pic Design
3110-01-136-109411628994 INTERCHANGEABLE
Bearing,roller,needle
Jtekt Bearings North America Llc Div Kbna - Ord 1
5340-01-467-5572B-86 INTERCHANGEABLE
Hanger,mud Flap Set
Betts Spring Co
Cross-Reference Index
Part NumberManufacturer
B86 B G Laboratories Inc. (USA)
GK4331 Keytronics, Inc. Div Api Technologies Corp- Magnetics (USA)
653592 Raytheon Technical Services Company (USA)
3101 Inrcore, Llc Div Inrcore (USA)
653592 Cae Usa Inc. (USA)
Related Parts
2920-00-018-5500INTERCHANGEABLE
SPARK PLUG
3035
5940-00-156-1509INTERCHANGEABLE
TERMINAL,LUG
8195670
5330-00-404-1381INTERCHANGEABLE
SEAL,PLAIN ENCASED
455271S60
3030-00-432-1578INTERCHANGEABLE
BELT,V
B86
3110-00-620-4498INTERCHANGEABLE
BEARING,ROLLER,NEEDLE
B86
6625-00-866-4224INTERCHANGEABLE
LEAD,TEST
B-8-6
3110-00-896-9314INTERCHANGEABLE
BEARING,NEEDLE
B86
5310-00-954-7183INTERCHANGEABLE
WASHER,FLAT
B8-6
3110-01-136-1094INTERCHANGEABLE
BEARING,ROLLER,NEEDLE
11628994
5340-01-467-5572INTERCHANGEABLE
HANGER,MUD FLAP SET
B-86

Frequently Asked Questions

What is NSN 5950-00-988-7761?

NSN 5950-00-988-7761 is a Transformer,power, manufactured by B G Laboratories Inc., classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-988-7761?

NSN 5950-00-988-7761 has 5 cross-referenced part numbers: B86 (B G Laboratories Inc.), GK4331 (Keytronics, Inc. Div Api Technologies Corp- Magnetics), 653592 (Raytheon Technical Services Company), 3101 (Inrcore, Llc Div Inrcore), 653592 (Cae Usa Inc.).

What NSN replaces 5950-00-988-7761?

There are 10 known substitutes for 5950-00-988-7761: 2920-00-018-5500, 5940-00-156-1509, 5330-00-404-1381 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of B86?

Key specifications for B86: Reliability Indicator: NOT ESTABLISHED; Mounting Hole Diameter: 0.187 INCHES NOMINAL SINGLE GROUP IN; Distance Between Mounting Facility Centers: 1.969 INCHES MINIMUM AND 2.031 INCHES MAXIMUM SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN; Frequency Rating: 50.0 HERTZ NOMINAL OR 60.0 HERTZ NOMINAL SINGLE COMPONENT. 17 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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