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Technical Data Sheet
PartsTable / MRO / 21-039
21-039 ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
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 CONNECTOR,PLUG,ELECTRICAL is a the manufacturer industrial component. Key specifications include material: STEEL, body_width: 0.900 INCHES NOMINAL IN, body_height: 1.100 INCHES NOMINAL IN, body_length: 1.200 INCHES NOMINAL IN, design_type: DRY, thread_size: 5/16-24. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 2990-00-074-8873, 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
MRO→ MRO_GENERAL→ 21-039
NSN: 2990-00-074-8873
FSC: 2990
CAGE: 79260 — WALKER MFG CO (USA)
SPECIFICATIONS
materialSTEEL
body_width0.900 INCHES NOMINAL IN
body_height1.100 INCHES NOMINAL IN
body_length1.200 INCHES NOMINAL IN
design_typeDRY
thread_size5/16-24
coolant_typeAIR
spindle_typeFEMALE
rating_methodELECTRICAL SINGLE COMPONENT SINGLE WINDING
inclosure_typeOPEN
inlet_locationCENTERED ON END OF BODY
muffler_designBAFFLE
NSN2990-00-074-8873
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CONNECTOR,PLUG,ELECTRICAL TITLE COMPONENT PN 21-039 MFR CONNECTOR,PLUG,ELECTRI
KEY FEATURES
•
OVERALL DIAMETER: 5.500 INCHES NOMINAL IN
•
COOLANT TYPE: AIR
•
DESIGN TYPE: DRY
•
INLET LOCATION: CENTERED ON END OF BODY
•
MATERIAL: STEEL LOCATION NOT OTHERWISE SPECIFIED
•
OUTLET LOCATION: CENTERED ON END OF BODY
•
OPERATING POSITION: UNIVERSAL
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL DIAMETER5.500 INCHES NOMINAL IN
COOLANT TYPEAIR
DESIGN TYPEDRY
OVERALL LENGTH27.380 INCHES NOMINAL IN
INLET LOCATIONCENTERED ON END OF BODY
MATERIALSTEEL LOCATION NOT OTHERWISE SPECIFIED
OUTLET LOCATIONCENTERED ON END OF BODY
OPERATING POSITIONUNIVERSAL
OUTLET PROJECTION LENGTH10.940 INCHES NOMINAL FIRST OUTLET IN
BAFFLE QUANTITY1
VERIFIED SUBSTITUTES & CROSS-REFERENCES 27
21039Interchangeable
interchangeable cross-reference
interchangeable
6S6-120VInterchangeable
interchangeable cross-reference
interchangeable
8017/21-03-5 GR EEN 120V 60HZInterchangeable
interchangeable cross-reference
interchangeable
656-120/125VInterchangeable
interchangeable cross-reference
interchangeable
730-2709Interchangeable
interchangeable cross-reference
interchangeable
651194R1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 21-039?
21-039 is a CONNECTOR,PLUG,ELECTRICAL. It is classified as a MRO (MRO_GENERAL).
What parts can replace 21-039?
There are 27 known substitutes for 21-039: 21039, 6S6-120V, 8017/21-03-5 GR EEN 120V 60HZ and 24 more. Substitute compatibility should be verified for your specific system.
Is 21-039 still available?
21-039 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026