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T-1409 — TRANSISTOR

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

T-1409: TRANSISTOR.

The TRANSISTOR is a the manufacturer industrial component. Key specifications include material: STEEL LOCATION NOT OTHERWISE SPECIFIED, body_shape: ROUND, design_type: DRY, coolant_type: AIR, inlet_location: CENTERED ON END OF BODY, muffler_design: STRAIGHT THROUGH W/BAFFLE. This part is cataloged in the U.S.

Government catalog under NSN 2990-00-423-9105, 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
T-1409
NSN: 2990-00-423-9105
NIINs: 004239105, 011517435
FSC: 2990 — Miscellaneous Engine Accessories, Nonaircraft
CAGE: 76700 — CUMMINS FILTRATION INC. (USA)
SPECIFICATIONS
materialSTEEL LOCATION NOT OTHERWISE SPECIFIED
body_shapeROUND
design_typeDRY
coolant_typeAIR
inlet_locationCENTERED ON END OF BODY
muffler_designSTRAIGHT THROUGH W/BAFFLE
overall_length19.125 INCHES NOMINAL IN
baffle_quantity1
outlet_locationCENTERED ON END OF BODY
overall_diameter8.500 INCHES NOMINAL IN
special_featuresJUNCTION PATTERN ARRANGEMENT: NPN
operating_positionUNIVERSAL
NSN2990-00-423-9105
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available TRANSISTOR TITLE COMPONENT PN T-1409 MFR TRANSISTOR
KEY FEATURES
•
OPERATING POSITION: UNIVERSAL
•
INLET LOCATION: CENTERED ON END OF BODY
•
COOLANT TYPE: AIR
•
DESIGN TYPE: DRY
•
OVERALL DIAMETER: 8.500 INCHES NOMINAL IN
•
INLET PROJECTION LENGTH: 3.968 INCHES NOMINAL SINGLE INLET IN
•
BAFFLE QUANTITY: 1
TECHNICAL CHARACTERISTICS
OPERATING POSITIONUNIVERSAL
INLET LOCATIONCENTERED ON END OF BODY
COOLANT TYPEAIR
DESIGN TYPEDRY
OVERALL DIAMETER8.500 INCHES NOMINAL IN
INLET PROJECTION LENGTH3.968 INCHES NOMINAL SINGLE INLET IN
BAFFLE QUANTITY1
OVERALL LENGTH19.125 INCHES NOMINAL IN
MUFFLER DESIGNSTRAIGHT THROUGH W/BAFFLE
OUTLET OUTSIDE DIAMETER3.030 INCHES NOMINAL FIRST OUTLET IN
SUBSTITUTES & CROSS-REFERENCES 5
3B6718Reference document
Same NSN cross-reference
Reference document — Secondary reference
MFM08-0011Reference document
Same NSN cross-reference
Reference document — Secondary reference
0624A0298Reference document
Same NSN cross-reference
Reference document — Secondary reference
ABT1409Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
1409Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is T-1409?
T-1409 is a TRANSISTOR.
What parts can replace T-1409?
There are 5 known substitutes for T-1409: 3B6718, MFM08-0011, 0624A0298 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for T-1409?
T-1409 is cataloged in the U.S. Government catalog under NSN 2990-00-423-9105. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.