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Technical Data Sheet
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L5178 ✓ 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

RESISTOR,VARIABLE,WIRE WOUND,NON. Key specifications include material: STEEL, end_similarity: NOT IDENTICAL, overall_length: 8.000 INCHES NOMINAL IN, first_end_style: FLAT KEYWAY, second_end_style: WOODRUFF KEYWAY, first_end_diameter: 0.7480 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3040-01-039-2783, 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
L5178
NSN: 3040-01-039-2783
FSC: 3040
CAGE: 92381 — CROWN INDUSTRIAL PRODUCTS CO (USA)
SPECIFICATIONS
materialSTEEL
end_similarityNOT IDENTICAL
overall_length8.000 INCHES NOMINAL IN
first_end_styleFLAT KEYWAY
second_end_styleWOODRUFF KEYWAY
first_end_diameter0.7480 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN
second_end_diameter0.7480 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN
external_keyway_length0.750 INCHES NOMINAL SECOND END IN
first_end_keyway_depth0.102 INCHES MINIMUM AND 0.107 INCHES MAXIMUM IN
first_end_keyway_width0.1870 INCHES MINIMUM AND 0.1890 INCHES MAXIMUM IN
second_end_keyway_width0.1870 INCHES MINIMUM AND 0.1890 INCHES MAXIMUM IN
second_end_distance_from_keyway_center_to_end3.000 INCHES NOMINAL IN
NSN3040-01-039-2783
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RESISTOR,VARIABLE,WIRE WOUND,NON TITLE COMPONENT PN L5178 MFR RESISTOR,VARIABLE,WIRE
KEY FEATURES
•
SECOND END DIAMETER: 0.7480 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN
•
SECOND END KEYWAY WIDTH: 0.1870 INCHES MINIMUM AND 0.1890 INCHES MAXIMUM IN
•
FIRST END KEYWAY WIDTH: 0.1870 INCHES MINIMUM AND 0.1890 INCHES MAXIMUM IN
•
EXTERNAL KEYWAY LENGTH: 0.750 INCHES NOMINAL SECOND END IN
•
SECOND END DISTANCE FROM KEYWAY CENTER TO END: 3.000 INCHES NOMINAL IN
•
FIRST END DIAMETER: 0.7480 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN
•
FIRST END KEYWAY DEPTH: 0.102 INCHES MINIMUM AND 0.107 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
SECOND END DIAMETER0.7480 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN
SECOND END KEYWAY WIDTH0.1870 INCHES MINIMUM AND 0.1890 INCHES MAXIMUM IN
FIRST END KEYWAY WIDTH0.1870 INCHES MINIMUM AND 0.1890 INCHES MAXIMUM IN
EXTERNAL KEYWAY LENGTH0.750 INCHES NOMINAL SECOND END IN
SECOND END DISTANCE FROM KEYWAY CENTER TO END3.000 INCHES NOMINAL IN
EXTERNAL KEYWAY LENGTH1.500 INCHES NOMINAL FIRST END IN
FIRST END DIAMETER0.7480 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN
FIRST END KEYWAY DEPTH0.102 INCHES MINIMUM AND 0.107 INCHES MAXIMUM IN
MATERIALSTEEL
SECOND END STYLEWOODRUFF KEYWAY
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
9895Interchangeable
interchangeable cross-reference
interchangeable
30152Interchangeable
interchangeable cross-reference
interchangeable
68462Interchangeable
interchangeable cross-reference
interchangeable
22-209Interchangeable
interchangeable cross-reference
interchangeable
3440-0004Interchangeable
interchangeable cross-reference
interchangeable
30152-0Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is L5178?
L5178 is a RESISTOR,VARIABLE,WIRE WOUND,NON.
What parts can replace L5178?
There are 19 known substitutes for L5178: 9895, 30152, 68462 and 16 more. Substitute compatibility should be verified for your specific system.
What is the NSN for L5178?
L5178 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3040-01-039-2783. 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