PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

51948Transformer,audio Frequency

Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple · NSN 5950-00-660-9497 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-660-9497 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-660-9497. Primary manufacturer part number: 51948.
Features
  • Transformer,audio Frequency — FSC 5950
  • Impedance Rating in Ohms: 800.0 NOMINAL SINGLE COMPONENT SINGLE SECONDARY
  • Reliability Indicator: NOT ESTABLISHED
  • Thread Quantity Per Inch: 32 SINGLE GROUP
  • Primary to Secondary Turn Ratio: 1 TO 5-9/10 SINGLE COMPONENT
  • Inclosure Type: HERMETICALLY SEALED
  • Distance Between Mounting Facility Centers: 1.250 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Winding Function and Quantity: 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,audio Frequency, cataloged under National Stock Number 5950-00-660-9497, 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 Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple. Government technical data includes 20 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-660-9497
Primary Part Number51948
Item NameTransformer,audio Frequency
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerNorthrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple
StatusACTIVE
Impedance Rating in Ohms800.0 NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Reliability IndicatorNOT ESTABLISHED
Thread Quantity Per Inch32 SINGLE GROUP
Primary to Secondary Turn Ratio1 TO 5-9/10 SINGLE COMPONENT
Inclosure TypeHERMETICALLY SEALED
Distance Between Mounting Facility Centers1.250 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Terminal Type and Quantity6 SOLDER STUD
Body Width1.312 INCHES MAXIMUM IN
Body Height1.750 INCHES MAXIMUM IN
Impedance Rating in Ohms26000.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Winding Operating Current300.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE SECONDARY
Mounting MethodTHREADED STUD(S) SINGLE GROUP
Mounting Facility Quantity2 SINGLE GROUP
Body Length1.312 INCHES MAXIMUM IN
Winding Operating Current10.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY
Nominal Thread Size0.138 INCHES SINGLE GROUP IN
Frequency Rating500.0 HERTZ MAXIMUM SINGLE COMPONENT
Maximum Transformer Power Rating3.2 WATTS SINGLE COMPONENT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
3040-00-131-6357SM-C-38755 INTERCHANGEABLE
Lever,manual Control
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
3655-00-174-786134225 INTERCHANGEABLE
Tub
Superior Air Products Co
5330-01-125-356134225 INTERCHANGEABLE
Gasket
Mcneil Ohio Corp
5920-01-168-20448501 INTERCHANGEABLE
Work Station Kit,electrostatic C
Desco Industries, Inc. Dba Desco Industries Inc Div Desco
5330-01-311-7009 INTERCHANGEABLE
Gasket
4130-01-551-098151948 INTERCHANGEABLE
Condenser,refrigeration
Applied Companies
5998-01-583-138551948 INTERCHANGEABLE
Circuit Card Assembly
G.s. Blodgett, Llc Div Blodgett
Cross-Reference Index
Part NumberManufacturer
BX-9257 Baltimore Transformer Co (USA)
51948 Drs Sustainment Systems, Inc. (USA)
51948 PRIMARY Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple (USA)
51948 Northrop Grumman Systems Corporation Div Es Defensive Systems Division (USA)
51948 Associated Aircraft Manufacturing & Sales, Inc. Dba Associated Aircraft Manufacturing & Sales Inc (USA)
34225 Freed Transformer Co (USA)
Related Parts
3040-00-131-6357INTERCHANGEABLE
LEVER,MANUAL CONTROL
SM-C-38755
3655-00-174-7861INTERCHANGEABLE
TUB
34225
5330-01-125-3561INTERCHANGEABLE
GASKET
34225
5920-01-168-2044INTERCHANGEABLE
WORK STATION KIT,ELECTROSTATIC C
8501
5330-01-311-7009INTERCHANGEABLE
GASKET
4130-01-551-0981INTERCHANGEABLE
CONDENSER,REFRIGERATION
51948
5998-01-583-1385INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
51948

Frequently Asked Questions

What is NSN 5950-00-660-9497?

NSN 5950-00-660-9497 is a Transformer,audio Frequency, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-660-9497?

NSN 5950-00-660-9497 has 6 cross-referenced part numbers: BX-9257 (Baltimore Transformer Co), 51948 (Drs Sustainment Systems, Inc.), 51948 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple), 51948 (Northrop Grumman Systems Corporation Div Es Defensive Systems Division), 51948 (Associated Aircraft Manufacturing & Sales, Inc. Dba Associated Aircraft Manufacturing & Sales Inc) and 1 more.

What NSN replaces 5950-00-660-9497?

There are 7 known substitutes for 5950-00-660-9497: 3040-00-131-6357, 3655-00-174-7861, 5330-01-125-3561 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 51948?

Key specifications for 51948: Impedance Rating in Ohms: 800.0 NOMINAL SINGLE COMPONENT SINGLE SECONDARY; Reliability Indicator: NOT ESTABLISHED; Thread Quantity Per Inch: 32 SINGLE GROUP; Primary to Secondary Turn Ratio: 1 TO 5-9/10 SINGLE COMPONENT. 20 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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