PartsTable
Technical Data Sheet
PartsTable / MRO / C178
C178 ✓ 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

RESISTOR,VARIABLE,WIRE WOUND,PRE. Key specifications include material: COPPER ALLOY, body_style: CYLINDRICAL SERVO MOUNTED, body_length: 1.250 INCHES MAXIMUM IN, shaft_style: ROUND, SLOTTED, corner_shape: ROUND INSIDE RIGHT CORNER, pilot_length: 0.1250 INCHES NOMINAL 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 4320-00-555-3297, 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→ C178
NSN: 4320-00-555-3297
FSC: 4320
CAGE: 63857 — CIRCOR NAVAL SOLUTIONS LLC DBA WARREN PUMPS (USA)
SPECIFICATIONS
materialCOPPER ALLOY
body_styleCYLINDRICAL SERVO MOUNTED
body_length1.250 INCHES MAXIMUM IN
shaft_styleROUND, SLOTTED
corner_shapeROUND INSIDE RIGHT CORNER
pilot_length0.1250 INCHES NOMINAL IN
shaft_length0.500 INCHES NOMINAL IN
actuator_typeSINGLE SHAFT
body_diameter2.000 INCHES MAXIMUM IN
corner_radius0.250 INCHES NOMINAL INSIDE RIGHT CORNER IN
overall_width1.875 INCHES NOMINAL IN
overall_length1.250 INCHES NOMINAL IN
NSN4320-00-555-3297
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RESISTOR,VARIABLE,WIRE WOUND,PRE TITLE COMPONENT PN C178 MFR RESISTOR,VARIABLE,WIRE
KEY FEATURES
•
BODY OUTSIDE DIAMETER: 10.499 INCHES MINIMUM AND 10.500 INCHES MAXIMUM IN
•
CORNER SHAPE: SQUARE OUTSIDE LEFT CORNER
•
INTERNAL FLANGE WIDTH: 0.531 INCHES NOMINAL IN
•
BODY INSIDE DIAMETER: 9.375 INCHES MINIMUM AND 9.737 INCHES MAXIMUM IN
•
RIGHT SIDE FLANGE THICKNESS: 0.250 INCHES NOMINAL IN
•
CORNER RADIUS: 0.250 INCHES NOMINAL INSIDE RIGHT CORNER IN
•
SURFACE FINISH: 125.0 MICROINCHES ALL SURFACES
TECHNICAL CHARACTERISTICS (FLIS)
BODY OUTSIDE DIAMETER10.499 INCHES MINIMUM AND 10.500 INCHES MAXIMUM IN
CORNER SHAPESQUARE OUTSIDE LEFT CORNER
INTERNAL FLANGE WIDTH0.531 INCHES NOMINAL IN
BODY INSIDE DIAMETER9.375 INCHES MINIMUM AND 9.737 INCHES MAXIMUM IN
RIGHT SIDE FLANGE THICKNESS0.250 INCHES NOMINAL IN
CORNER RADIUS0.250 INCHES NOMINAL INSIDE RIGHT CORNER IN
CORNER SHAPESQUARE OUTSIDE RIGHT CORNER
SURFACE FINISH125.0 MICROINCHES ALL SURFACES
LEFT SIDE FLANGE THICKNESS0.250 INCHES NOMINAL IN
DISTANCE BETWEEN FLANGES0.625 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
239K350061Interchangeable
interchangeable cross-reference
interchangeable
C178Interchangeable
interchangeable cross-reference
interchangeable
381-0297-000Interchangeable
interchangeable cross-reference
interchangeable
AP20C62Interchangeable
interchangeable cross-reference
interchangeable
8604Interchangeable
interchangeable cross-reference
interchangeable
R529PC77Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is C178?
C178 is a RESISTOR,VARIABLE,WIRE WOUND,PRE. It is classified as a MRO (MRO_GENERAL).
What parts can replace C178?
There are 6 known substitutes for C178: 239K350061, C178, 381-0297-000 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for C178?
C178 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4320-00-555-3297. 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