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PartsTable / COMPONENT / 5-4-1378-2-140
5-4-1378-2-140 ✓ 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 RING,DEE is a the manufacturer industrial component. Key specifications include material: STEEL, stock_size: 0.192 IN. DIA IN, inside_width: 1.124 INCHES NOMINAL IN, inside_height: 0.844 INCHES NOMINAL IN, surface_treatment: ZINC, straight_side_form: NONROLLER.

This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5365-01-023-3427, 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
5-4-1378-2-140
NSN: 5365-01-023-3427
FSC: 5365
CAGE: 81334 — WESTCOTT SNYDER MFG CORP (USA)
SPECIFICATIONS
materialSTEEL
stock_size0.192 IN. DIA IN
inside_width1.124 INCHES NOMINAL IN
inside_height0.844 INCHES NOMINAL IN
surface_treatmentZINC
straight_side_formNONROLLER
nondefinitive_spec/std_data2 CLASS AND E CONFIGURATION
NSN5365-01-023-3427
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RING,DEE TITLE COMPONENT PN 5-4-1378-2-140 MFR RING,DEE
KEY FEATURES
•
MATERIAL: STEEL
•
NONDEFINITIVE SPEC/STD DATA: 2 CLASS AND E CONFIGURATION
•
STRAIGHT SIDE FORM: NONROLLER
•
SURFACE TREATMENT: ZINC
•
INSIDE WIDTH: 1.124 INCHES NOMINAL IN
•
INSIDE HEIGHT: 0.844 INCHES NOMINAL IN
•
STOCK SIZE: 0.192 IN. DIA IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL
NONDEFINITIVE SPEC/STD DATA2 CLASS AND E CONFIGURATION
STRAIGHT SIDE FORMNONROLLER
SURFACE TREATMENTZINC
INSIDE WIDTH1.124 INCHES NOMINAL IN
INSIDE HEIGHT0.844 INCHES NOMINAL IN
STOCK SIZE0.192 IN. DIA IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
MILR3390Interchangeable
interchangeable cross-reference
interchangeable
MIL-R-3390 CLASS 1 CONFIG KInterchangeable
interchangeable cross-reference
interchangeable
4-1-454Interchangeable
interchangeable cross-reference
interchangeable
CLASS 1, CONFIG X, STYLE 1Interchangeable
interchangeable cross-reference
interchangeable
M3390-CL 2, CON K, 0.162 DIAInterchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-3390Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 5-4-1378-2-140?
5-4-1378-2-140 is a RING,DEE.
What parts can replace 5-4-1378-2-140?
There are 9 known substitutes for 5-4-1378-2-140: MILR3390, MIL-R-3390 CLASS 1 CONFIG K, 4-1-454 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 5-4-1378-2-140?
5-4-1378-2-140 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5365-01-023-3427. 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.
PartsTable Design LLC · partstable.com
Last verified: July 2026