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Technical Data Sheet
PartsTable / MRO / 7644921
7644921 ✓ 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

DUCT ASSEMBLY,AIR CONDITIONING-H. Key specifications include body_width: 1.760 INCHES MAXIMUM IN, body_height: 3.625 INCHES NOMINAL IN, body_length: 2.010 INCHES MAXIMUM IN, body_material: METAL, inclosure_type: HERMETICALLY SEALED, overall_height: 4.000 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 5915-00-931-8482, 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→ 7644921
NSN: 5915-00-931-8482
FSC: 5915
CAGE: 03538 — LOCKHEED MARTIN CORPORATION DIV RMS (USA)
SPECIFICATIONS
body_width1.760 INCHES MAXIMUM IN
body_height3.625 INCHES NOMINAL IN
body_length2.010 INCHES MAXIMUM IN
body_materialMETAL
inclosure_typeHERMETICALLY SEALED
overall_height4.000 INCHES MAXIMUM IN
special_featuresUNPACKAGED UNIT WEIGHT: LB1.000
style_designatorRECTANGULAR TERMINAL/TERMINALS ON ONE SURFACE
nominal_thread_size0.190 INCHES IN
operating_temp_range+15.0 TO 45.0 CELSIUS DEGC
end_item_identificationU/O TURBINE P/N764828-2 ACFT F16A/B
average_life_rating_in_hours10000.0
NSN5915-00-931-8482
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available DUCT ASSEMBLY,AIR CONDITIONING-H TITLE COMPONENT PN 7644921 MFR DUCT ASSEMBLY,AIR COND
KEY FEATURES
•
FREQUENCY BAND WIDTH PER FUNCTION: 3.30 KILOHERTZ BLANK AND 3.70 KILOHERTZ BLANK LOCATION NOT OTHERWISE SPECIFIED
•
INCLOSURE TYPE: HERMETICALLY SEALED
•
DISTANCE BETWEEN CENTERLINES OF MOUNTING FACILITIES PARALLEL TO BODY LENGTH: 1.250 INCHES NOMINAL IN
•
MOUNTING FACILITY SCREW THREAD SERIES DESIGNATOR: UNF
•
INSERTION LOSS AT REFERENCE FREQUENCY PER FUNCTION IN DECIBELS: 3.0 BLANK LOCATION NOT OTHERWISE SPECIFIED
•
SPECIFIED FREQUENCIES OF DISCRIMINATION PER FUNCTION: 3.20 KILOHERTZ BLANK AND 3.30 KILOHERTZ BLANK AND 3.70 KILOHERTZ BLANK AND 3.80 KILOHERTZ BLANK LOCATION NOT OTHERWISE SPECIFIED
•
BODY LENGTH: 2.010 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
FREQUENCY BAND WIDTH PER FUNCTION3.30 KILOHERTZ BLANK AND 3.70 KILOHERTZ BLANK LOCATION NOT OTHERWISE SPECIFIED
INCLOSURE TYPEHERMETICALLY SEALED
DISTANCE BETWEEN CENTERLINES OF MOUNTING FACILITIES PARALLEL TO BODY LENGTH1.250 INCHES NOMINAL IN
MOUNTING FACILITY SCREW THREAD SERIES DESIGNATORUNF
INSERTION LOSS AT REFERENCE FREQUENCY PER FUNCTION IN DECIBELS3.0 BLANK LOCATION NOT OTHERWISE SPECIFIED
SPECIFIED FREQUENCIES OF DISCRIMINATION PER FUNCTION3.20 KILOHERTZ BLANK AND 3.30 KILOHERTZ BLANK AND 3.70 KILOHERTZ BLANK AND 3.80 KILOHERTZ BLANK LOCATION NOT OTHERWISE SPECIFIED
SPECIAL FEATURESUNPACKAGED UNIT WEIGHT: LB1.000
BODY LENGTH2.010 INCHES MAXIMUM IN
FUNCTIONAL TERMINAL TYPE AND QUANTITY1 SOLDER STUD INPUT FIRST FUNCTION
INPUT IMPEDANCE PER FUNCTION W/LOAD1.0 KILOHMS BLANK LOCATION NOT OTHERWISE SPECIFIED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
J514Interchangeable
interchangeable cross-reference
interchangeable
PF101-12-8Interchangeable
interchangeable cross-reference
interchangeable
144049Interchangeable
interchangeable cross-reference
interchangeable
800903Interchangeable
interchangeable cross-reference
interchangeable
104-15Interchangeable
interchangeable cross-reference
interchangeable
J8DInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 7644921?
7644921 is a DUCT ASSEMBLY,AIR CONDITIONING-H. It is classified as a MRO (MRO_GENERAL).
What parts can replace 7644921?
There are 19 known substitutes for 7644921: J514, PF101-12-8, 144049 and 16 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 7644921?
7644921 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5915-00-931-8482. 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