PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

9973Transformer,power

Oeco, Llc Dba Pacific Scientific Oeco Div Fire Safety and Power Systems · NSN 5950-00-916-3873 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-916-3873 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-916-3873. Primary manufacturer part number: 9973.
Features
  • Transformer,power — FSC 5950
  • Frequency Rating: 380.0 HERTZ MINIMUM AND 440.0 HERTZ MAXIMUM SINGLE COMPONENT
  • Mounting Hole Diameter: 0.218 INCHES MINIMUM AND 0.228 INCHES MAXIMUM SINGLE GROUP IN
  • Input-Output Phase Relationship: SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
  • Winding Shielding Method: INTERNAL SHIELD BROUGHT OUT TO TERMINAL SINGLE COMPONENT
  • Terminal Type and Quantity: 6 WIRE LEAD
  • Mounting Facility Quantity: 4 SINGLE GROUP
  • Winding Operating Current: 960.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT SINGLE SECONDARY
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,power, cataloged under National Stock Number 5950-00-916-3873, 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 Oeco, Llc Dba Pacific Scientific Oeco Div Fire Safety and Power Systems. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, 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
NSN5950-00-916-3873
Primary Part Number9973
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerOeco, Llc Dba Pacific Scientific Oeco Div Fire Safety and Power Systems
StatusACTIVE
Frequency Rating380.0 HERTZ MINIMUM AND 440.0 HERTZ MAXIMUM SINGLE COMPONENT
Mounting Hole Diameter0.218 INCHES MINIMUM AND 0.228 INCHES MAXIMUM SINGLE GROUP IN
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Winding Shielding MethodINTERNAL SHIELD BROUGHT OUT TO TERMINAL SINGLE COMPONENT
Terminal Type and Quantity6 WIRE LEAD
Mounting Facility Quantity4 SINGLE GROUP
Winding Operating Current960.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT SINGLE SECONDARY
Body Width1.700 INCHES MAXIMUM IN
Body Length2.600 INCHES MAXIMUM IN
Center to Center Distance Between Mounting Facilities Parallel to Width1.200 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Inclosure TypeFULLY INCLOSED
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Winding Operating Voltage115.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Winding Operating Voltage52.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Mounting MethodFLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
Center to Center Distance Between Mounting Facilities Parallel to Length1.750 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Reliability IndicatorNOT ESTABLISHED
Body Height1.830 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
5999-00-186-391270-801074 INTERCHANGEABLE
Clamp,electrical
General Dynamics Mission Systems, Inc.
5331-00-359-441899-73 INTERCHANGEABLE
O-Ring
Ontic Engineering & Manufacturing, Inc Dba Ontic Us
5955-00-499-7320712732-11 INTERCHANGEABLE
Crystal Unit,quartz
Raytheon Company Div Rmd Strategic
5340-00-807-1081 INTERCHANGEABLE
Bracket,angle
5130-00-863-717699-73 INTERCHANGEABLE
Nose Assembly,fastener Installat
Huck International, Inc. Div Kingston Operations
5310-01-201-5006 INTERCHANGEABLE
Washer
4320-01-226-8550942AS108 INTERCHANGEABLE
Ram,second Stage
Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
6850-01-504-267824641-05 INTERCHANGEABLE
Turbidity Standard Solution
Hach Company Dba Hach Co
Cross-Reference Index
Part NumberManufacturer
9973 PRIMARY Oeco, Llc Dba Pacific Scientific Oeco Div Fire Safety and Power Systems (USA)
Related Parts
5999-00-186-3912INTERCHANGEABLE
CLAMP,ELECTRICAL
70-801074
5331-00-359-4418INTERCHANGEABLE
O-RING
99-73
5955-00-499-7320INTERCHANGEABLE
CRYSTAL UNIT,QUARTZ
712732-11
5340-00-807-1081INTERCHANGEABLE
BRACKET,ANGLE
5130-00-863-7176INTERCHANGEABLE
NOSE ASSEMBLY,FASTENER INSTALLAT
99-73
5310-01-201-5006INTERCHANGEABLE
WASHER
4320-01-226-8550INTERCHANGEABLE
RAM,SECOND STAGE
942AS108
6850-01-504-2678INTERCHANGEABLE
TURBIDITY STANDARD SOLUTION
24641-05

Frequently Asked Questions

What is NSN 5950-00-916-3873?

NSN 5950-00-916-3873 is a Transformer,power, manufactured by Oeco, Llc Dba Pacific Scientific Oeco Div Fire Safety and Power Systems, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-916-3873?

NSN 5950-00-916-3873 has 1 cross-referenced part number: 9973 (Oeco, Llc Dba Pacific Scientific Oeco Div Fire Safety and Power Systems).

What NSN replaces 5950-00-916-3873?

There are 8 known substitutes for 5950-00-916-3873: 5999-00-186-3912, 5331-00-359-4418, 5955-00-499-7320 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 9973?

Key specifications for 9973: Frequency Rating: 380.0 HERTZ MINIMUM AND 440.0 HERTZ MAXIMUM SINGLE COMPONENT; Mounting Hole Diameter: 0.218 INCHES MINIMUM AND 0.228 INCHES MAXIMUM SINGLE GROUP IN; Input-Output Phase Relationship: SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT; Winding Shielding Method: INTERNAL SHIELD BROUGHT OUT TO TERMINAL SINGLE COMPONENT. 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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