PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

37861Transformer,audio Frequency

Freed Transformer Co · NSN 5950-00-086-8868 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-086-8868 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-086-8868. Primary manufacturer part number: 37861.
Features
  • Transformer,audio Frequency — FSC 5950
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
  • Winding Operating Current: 10.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY
  • Frequency Rating: 5.0 KILOHERTZ NOMINAL SINGLE COMPONENT
  • Distance Between Mounting Facility Centers: 0.750 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Inclosure Type: HERMETICALLY SEALED
  • Terminal Type and Quantity: 4 TAB, SOLDER LUG
  • Reliability Indicator: NOT ESTABLISHED
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,audio Frequency, cataloged under National Stock Number 5950-00-086-8868, 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 Freed Transformer Co. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-086-8868
Primary Part Number37861
Item NameTransformer,audio Frequency
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerFreed Transformer Co
StatusACTIVE
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Winding Operating Current10.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY
Frequency Rating5.0 KILOHERTZ NOMINAL SINGLE COMPONENT
Distance Between Mounting Facility Centers0.750 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Inclosure TypeHERMETICALLY SEALED
Terminal Type and Quantity4 TAB, SOLDER LUG
Reliability IndicatorNOT ESTABLISHED
Thread Quantity Per Inch40 SINGLE GROUP
Transformer FunctionINPUT
Winding Operating Current10.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE SECONDARY
Body Height1.281 INCHES MAXIMUM IN
Nominal Thread Size0.112 INCHES SINGLE GROUP IN
Mounting MethodTHREADED HOLE(S) SINGLE GROUP
Mounting Facility Quantity2 SINGLE GROUP
Body Length1.078 INCHES MAXIMUM IN
Body Width0.516 INCHES MAXIMUM IN
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Primary to Secondary Turn Ratio1 TO 4-1/2 SINGLE COMPONENT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
1730-00-676-9488 INTERCHANGEABLE
Cap,filler
6240-00-836-207927035 INTERCHANGEABLE
Lamp,incandescent
Ktm 2 Llc Dba Arrow Safety Device Company
5930-01-264-426310999 INTERCHANGEABLE
Switch,sensitive
Unicontrol Inc Hays Cleveland Div
4130-01-346-28653786-1 INTERCHANGEABLE
Door,refrigerator
B/e Aerospace, Inc.
2530-01-393-2178 INTERCHANGEABLE
Piston,hydraulic Brake
4820-01-485-0530 INTERCHANGEABLE
Valve,flow Control
5999-01-700-185407070-37861-1 INTERCHANGEABLE
Strip,electrical Grounding
United States Department of the Navy Dba Naval Surface Warfare Center Panama City
5999-01-707-311537861-4 INTERCHANGEABLE
Strip,electrical Grounding
United States Department of the Navy Dba Naval Surface Warfare Center Panama City
Cross-Reference Index
Part NumberManufacturer
37861 Freed Transformer Co (USA)
27035 Emerson Electric Co White-Rodgers Div (USA)
Related Parts
1730-00-676-9488INTERCHANGEABLE
CAP,FILLER
6240-00-836-2079INTERCHANGEABLE
LAMP,INCANDESCENT
27035
5930-01-264-4263INTERCHANGEABLE
SWITCH,SENSITIVE
10999
4130-01-346-2865INTERCHANGEABLE
DOOR,REFRIGERATOR
3786-1
2530-01-393-2178INTERCHANGEABLE
PISTON,HYDRAULIC BRAKE
4820-01-485-0530INTERCHANGEABLE
VALVE,FLOW CONTROL
5999-01-700-1854INTERCHANGEABLE
STRIP,ELECTRICAL GROUNDING
07070-37861-1
5999-01-707-3115INTERCHANGEABLE
STRIP,ELECTRICAL GROUNDING
37861-4

Frequently Asked Questions

What is NSN 5950-00-086-8868?

NSN 5950-00-086-8868 is a Transformer,audio Frequency, manufactured by Freed Transformer Co, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-086-8868?

NSN 5950-00-086-8868 has 2 cross-referenced part numbers: 37861 (Freed Transformer Co), 27035 (Emerson Electric Co White-Rodgers Div).

What NSN replaces 5950-00-086-8868?

There are 8 known substitutes for 5950-00-086-8868: 1730-00-676-9488, 6240-00-836-2079, 5930-01-264-4263 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 37861?

Key specifications for 37861: Thread Series Designator: UNIFIED NATIONAL COARSE (UNC) SINGLE GROUP; Winding Operating Current: 10.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY; Frequency Rating: 5.0 KILOHERTZ NOMINAL SINGLE COMPONENT; Distance Between Mounting Facility Centers: 0.750 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN. 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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