PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

9981Transformer,power

Standex Electronics, Inc. · NSN 5950-00-890-9688 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-890-9688 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-890-9688. Primary manufacturer part number: 9981.
Features
  • Transformer,power — FSC 5950
  • Body Length: 2.313 INCHES NOMINAL IN
  • Reliability Indicator: NOT ESTABLISHED
  • Winding Operating Current: 300.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT SINGLE SECONDARY
  • Inclosure Type: FULLY INCLOSED
  • Center to Center Distance Between Mounting Facilities Parallel to Width: 1.688 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Winding Function and Quantity: 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
  • Winding Operating Voltage: 340.00 AC VOLTS NOMINAL 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 5950-00-890-9688, 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 Standex Electronics, Inc.. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 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
NSN5950-00-890-9688
Primary Part Number9981
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerStandex Electronics, Inc.
StatusACTIVE
Body Length2.313 INCHES NOMINAL IN
Reliability IndicatorNOT ESTABLISHED
Winding Operating Current300.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT SINGLE SECONDARY
Inclosure TypeFULLY INCLOSED
Center to Center Distance Between Mounting Facilities Parallel to Width1.688 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Winding Operating Voltage340.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Mounting MethodTHREADED STUD(S) SINGLE GROUP
Frequency Rating400.0 HERTZ NOMINAL SINGLE COMPONENT
Winding Operating Voltage55.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Thread Quantity Per Inch32 SINGLE GROUP
Nominal Thread Size0.138 INCHES SINGLE GROUP IN
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Terminal Type and Quantity5 TAB, SOLDER LUG
Mounting Facility Quantity4 SINGLE GROUP
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Body Outside Diameter2.500 INCHES NOMINAL IN
Center to Center Distance Between Mounting Facilities Parallel to Length1.438 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
4310-00-374-73539981 INTERCHANGEABLE
Ring,piston
Hdt Expeditionary Systems Inc
5955-00-499-7326712732-19 INTERCHANGEABLE
Crystal Unit,quartz
Raytheon Company Div Rmd Strategic
5330-00-524-8784 INTERCHANGEABLE
Seal,oil,track Roller
2940-00-580-6302 INTERCHANGEABLE
Filter Element,fluid
5130-00-705-233799-81 INTERCHANGEABLE
Nose Assembly,faste
Huck International, Inc. Div Kingston Operations
5305-01-133-8955N09981 INTERCHANGEABLE
Screw,machine
Leslie Controls, Inc. Dba Leslie Controls Inc
6515-01-307-74500099810 INTERCHANGEABLE
Tube,drainage,surgical
C. R. Bard, Inc.
8340-01-467-9179 INTERCHANGEABLE
Steel Stake,pin Set
Cross-Reference Index
Part NumberManufacturer
968-1D914 Gap Instrument Corp (USA)
9981 PRIMARY Standex Electronics, Inc. (USA)
968-1D914 Advanced Logic Resources Inc Dba Alr (USA)
Related Parts
4310-00-374-7353INTERCHANGEABLE
RING,PISTON
9981
5955-00-499-7326INTERCHANGEABLE
CRYSTAL UNIT,QUARTZ
712732-19
5330-00-524-8784INTERCHANGEABLE
SEAL,OIL,TRACK ROLLER
2940-00-580-6302INTERCHANGEABLE
FILTER ELEMENT,FLUID
5130-00-705-2337INTERCHANGEABLE
NOSE ASSEMBLY,FASTE
99-81
5305-01-133-8955INTERCHANGEABLE
SCREW,MACHINE
N09981
6515-01-307-7450INTERCHANGEABLE
TUBE,DRAINAGE,SURGICAL
0099810
8340-01-467-9179INTERCHANGEABLE
STEEL STAKE,PIN SET

Frequently Asked Questions

What is NSN 5950-00-890-9688?

NSN 5950-00-890-9688 is a Transformer,power, manufactured by Standex Electronics, Inc., classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-890-9688?

NSN 5950-00-890-9688 has 3 cross-referenced part numbers: 968-1D914 (Gap Instrument Corp), 9981 (Standex Electronics, Inc.), 968-1D914 (Advanced Logic Resources Inc Dba Alr).

What NSN replaces 5950-00-890-9688?

There are 8 known substitutes for 5950-00-890-9688: 4310-00-374-7353, 5955-00-499-7326, 5330-00-524-8784 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 9981?

Key specifications for 9981: Body Length: 2.313 INCHES NOMINAL IN; Reliability Indicator: NOT ESTABLISHED; Winding Operating Current: 300.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT SINGLE SECONDARY; Inclosure Type: FULLY INCLOSED. 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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