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GK4331 ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The TRANSFORMER,POWER is a the manufacturer industrial component. Key specifications include body_width: 1.625 INCHES MAXIMUM IN, body_height: 1.375 INCHES MAXIMUM IN, body_length: 1.719 INCHES MAXIMUM IN, inclosure_type: OPEN, overall_length: 2.438 INCHES MAXIMUM IN, mounting_method: BRACKET(S) AND UNTHREADED HOLE(S) SINGLE GROUP. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5950-00-988-7761, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
GK4331
NSN: 5950-00-988-7761
FSC: 5950
CAGE: 51181 — KEYTRONICS, INC. DIV API TECHNOLOGIES CORP- MAGNETICS (USA)
SPECIFICATIONS
body_width1.625 INCHES MAXIMUM IN
body_height1.375 INCHES MAXIMUM IN
body_length1.719 INCHES MAXIMUM IN
inclosure_typeOPEN
overall_length2.438 INCHES MAXIMUM IN
mounting_methodBRACKET(S) AND UNTHREADED HOLE(S) SINGLE GROUP
frequency_rating50.0 HERTZ NOMINAL OR 60.0 HERTZ NOMINAL SINGLE COMPONENT
features_providedTINNED WIRE LEADS
reliability_indicatorNOT ESTABLISHED
mounting_hole_diameter0.187 INCHES NOMINAL SINGLE GROUP IN
winding_operating_voltage7.10 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
mounting_facility_quantity2 SINGLE GROUP
NSN5950-00-988-7761
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available TRANSFORMER,POWER TITLE COMPONENT PN GK4331 MFR TRANSFORMER,POWER
KEY FEATURES
•
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
•
WINDING OPERATING VOLTAGE: 35.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY
TECHNICAL CHARACTERISTICS (FLIS)
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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
UD16Interchangeable
interchangeable cross-reference
interchangeable
784250Interchangeable
interchangeable cross-reference
interchangeable
0 241 319 512Interchangeable
interchangeable cross-reference
interchangeable
B86Interchangeable
interchangeable cross-reference
interchangeable
5895-381PC38Interchangeable
interchangeable cross-reference
interchangeable
5585734 PIECE 7Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is GK4331?
GK4331 is a TRANSFORMER,POWER.
What parts can replace GK4331?
There are 20 known substitutes for GK4331: UD16, 784250, 0 241 319 512 and 17 more. Substitute compatibility should be verified for your specific system.
What is the NSN for GK4331?
GK4331 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5950-00-988-7761. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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Last verified: July 2026