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903249 ✓ 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 BASE ASSEMBLY,CONVERTER is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, cone_width: 1.1250 INCHES NOMINAL IN, bore_diameter: 1.7500 INCHES NOMINAL IN, special_features: DUTY CLASS HM SERIES, style_designator: STEEP ANGLE, cone_corner_radius: 0.1400 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 1660-00-874-2792, 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
903249
NSN: 1660-00-874-2792
FSC: 1660
CAGE: 03990 — INGERSOLL-RAND COMPANY DBA INGERSOLL-RAND (USA)
SPECIFICATIONS
materialSTEEL OVERALL
cone_width1.1250 INCHES NOMINAL IN
bore_diameter1.7500 INCHES NOMINAL IN
special_featuresDUTY CLASS HM SERIES
style_designatorSTEEP ANGLE
cone_corner_radius0.1400 INCHES NOMINAL IN
standard_tolerance_designationAFBMA CLASS 2
NSN1660-00-874-2792
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available BASE ASSEMBLY,CONVERTER TITLE COMPONENT PN 903249 MFR BASE ASSEMBLY,CONVERTE
KEY FEATURES
•
FSC APPLICATION DATA: HEAT AND VENT SYSTEM,AIR CONDITIONING,AIRCRAFT
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: 3.250 IN. H,11.000 IN. W,13.000 IN. LG IN
TECHNICAL CHARACTERISTICS (FLIS)
FSC APPLICATION DATAHEAT AND VENT SYSTEM,AIR CONDITIONING,AIRCRAFT
GENERAL CHARACTERISTICS ITEM DESCRIPTION3.250 IN. H,11.000 IN. W,13.000 IN. LG IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
56-31221-36Interchangeable
interchangeable cross-reference
interchangeable
3110348Interchangeable
interchangeable cross-reference
interchangeable
49848Interchangeable
interchangeable cross-reference
interchangeable
8148650Interchangeable
Same NIIN cross-reference
interchangeable
904494Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 903249?
903249 is a BASE ASSEMBLY,CONVERTER.
What parts can replace 903249?
There are 5 known substitutes for 903249: 56-31221-36, 3110348, 49848 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 903249?
903249 is cataloged in the Federal Logistics Information System (FLIS) under NSN 1660-00-874-2792. 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