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Technical Data Sheet
PartsTable / MRO / IN121
IN121 ✓ 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 IN121 is a the manufacturer industrial component. Key specifications include color: BLACK, phase: SINGLE, shank_height: 0.875 INCHES NOMINAL IN, overall_height: 1.125 INCHES NOMINAL IN, inside_diameter: 0.457 INCHES NOMINAL IN, outside_diameter: 1.500 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 5895-00-062-0811, 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→ IN121
NSN: 5895-00-062-0811
FSC: 5895
CAGE: 00781 — CESSNA AIRCRAFT CO ARC AVIONICS DIV (USA)
SPECIFICATIONS
colorBLACK
phaseSINGLE
shank_height0.875 INCHES NOMINAL IN
overall_height1.125 INCHES NOMINAL IN
inside_diameter0.457 INCHES NOMINAL IN
outside_diameter1.500 INCHES NOMINAL IN
special_featuresDIMENSIONS 3.250 IN. BY 3.250 IN. BY 4.125 IN.; ACCURACY RATING: 2.0 MARKER DEGREE IN
style_designatorTHREADED
unable_to_decodeUNABLE TO DECODE
identification_code_colorBROWN
surface_treatment_and_locationOVERALL GLAZED
NSN5895-00-062-0811
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available IN121 TITLE COMPONENT PN IN121 MFR IN121
KEY FEATURES
•
COLOR: BLACK
•
PHASE: SINGLE
TECHNICAL CHARACTERISTICS (FLIS)
COLORBLACK
SPECIAL FEATURESDIMENSIONS 3.250 IN. BY 3.250 IN. BY 4.125 IN.; ACCURACY RATING: 2.0 MARKER DEGREE IN
PHASESINGLE
COLORBLACK
SPECIAL FEATURESDIMENSIONS 3.250 IN. BY 3.250 IN. BY 4.125 IN.; ACCURACY RATING: 2.0 MARKER DEGREE IN
PHASESINGLE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
SC-D-4742ITEM4Interchangeable
interchangeable cross-reference
interchangeable
IN121Interchangeable
interchangeable cross-reference
interchangeable
SCD4742BInterchangeable
interchangeable cross-reference
interchangeable
49760Interchangeable
interchangeable cross-reference
interchangeable
120 15/16Interchangeable
interchangeable cross-reference
interchangeable
273-10Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is IN121?
IN121 is a IN121. It is classified as a MRO (MRO_GENERAL).
What parts can replace IN121?
There are 6 known substitutes for IN121: SC-D-4742ITEM4, IN121, SCD4742B and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for IN121?
IN121 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5895-00-062-0811. 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