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PartsTable / COMPONENT / M21397
M21397 ✓ 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 QUADRANT,RUDDER ROP is a the manufacturer industrial component. Key specifications include material: ALUMINUM, overall_width: 2.375 INCHES NOMINAL IN, overall_length: 2.375 INCHES NOMINAL IN, mounting_method: SCREW, construction_type: ONE-PIECE, overall_thickness: 0.330 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 2030-00-393-3867, 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
M21397
NSN: 2030-00-393-3867
FSC: 2030
CAGE: 79577 — NORTH AND JUDD INC WILCOX-CRITTENDEN DIV (USA)
SPECIFICATIONS
materialALUMINUM
overall_width2.375 INCHES NOMINAL IN
overall_length2.375 INCHES NOMINAL IN
mounting_methodSCREW
construction_typeONE-PIECE
overall_thickness0.330 INCHES NOMINAL IN
surface_treatmentANODIZE
dial_aperture_size1.875 IN. DIA IN
mounting_hole_size0.169 IN. DIA HOLES IN
dial_aperture_shapeCIRCULAR
mounting_hole_quantity3
mounting_hole_configurationTWO HOLES SPACED 180 DEG APART AND ONE HOLE SPACED 90 DEG FROM THE TWO HOLES THAT ARE SPACED 180 DEG APART. ALL THREE HOLES ON A 2.625 IN. DIA CIRCLE IN
NSN2030-00-393-3867
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available QUADRANT,RUDDER ROP TITLE COMPONENT PN M21397 MFR QUADRANT,RUDDER ROP
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
12530Interchangeable
interchangeable cross-reference
interchangeable
21015Interchangeable
interchangeable cross-reference
interchangeable
M21397Interchangeable
interchangeable cross-reference
interchangeable
M2135-1Interchangeable
interchangeable cross-reference
interchangeable
2139722G001Interchangeable
interchangeable cross-reference
interchangeable
SL521BBInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is M21397?
M21397 is a QUADRANT,RUDDER ROP.
What parts can replace M21397?
There are 17 known substitutes for M21397: 12530, 21015, M21397 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for M21397?
M21397 is cataloged in the Federal Logistics Information System (FLIS) under NSN 2030-00-393-3867. 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