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4450K1 — PNEUMATIC MUFFLER,EXHAUST-INTAKE

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

4450K1: PNEUMATIC MUFFLER,EXHAUST-INTAKE.

PNEUMATIC MUFFLER,EXHAUST-INTAKE. Key specifications include material: STEEL LOCATION NOT OTHERWISE SPECIFIED, body_shape: TAPERED, overall_width: 0.4375 INCHES NOMINAL IN, inlet_location: LOCATED ON END OF BODY, muffler_design: STRAIGHT THROUGH, overall_height: 0.4375 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4330-01-425-7680, 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
4450K1
NSN: 4330-01-425-7680
FSC: 4330 — Centrifugals, Separators, and Pressure and Vacuum Filters
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialSTEEL LOCATION NOT OTHERWISE SPECIFIED
body_shapeTAPERED
overall_width0.4375 INCHES NOMINAL IN
inlet_locationLOCATED ON END OF BODY
muffler_designSTRAIGHT THROUGH
overall_height0.4375 INCHES NOMINAL IN
overall_length1.125 INCHES NOMINAL IN
special_featuresCAN BE USED FOR GASOLINE,OIL AND AIR FILTER,40MICRON ELEMENT,MAX PRESSURE 300 PSI,TEMP 40 TO 300 DEG
thread_directionRIGHT-HAND INLET
inlet_thread_size0.125-27 LOCATION NOT OTHERWISE SPECIFIED
inlet_connection_typeTHREADED LOCATION NOT OTHERWISE SPECIFIED
inlet_thread_locationEXTERNAL LOCATION NOT OTHERWISE SPECIFIED
NSN4330-01-425-7680
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available PNEUMATIC MUFFLER,EXHAUST-INTAKE TITLE COMPONENT PN 4450K1 MFR PNEUMATIC MUFFLER,EXHA
KEY FEATURES
•
INLET LOCATION: LOCATED ON END OF BODY
•
INLET CONNECTION QUANTITY: 1
•
INLET THREAD LOCATION: EXTERNAL LOCATION NOT OTHERWISE SPECIFIED
•
MUFFLER DESIGN: STRAIGHT THROUGH
•
INLET CONNECTION TYPE: THREADED LOCATION NOT OTHERWISE SPECIFIED
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.4375 INCHES NOMINAL IN
INLET LOCATIONLOCATED ON END OF BODY
INLET CONNECTION QUANTITY1
INLET THREAD LOCATIONEXTERNAL LOCATION NOT OTHERWISE SPECIFIED
OVERALL LENGTH1.125 INCHES NOMINAL IN
OVERALL WIDTH0.4375 INCHES NOMINAL IN
MUFFLER DESIGNSTRAIGHT THROUGH
INLET CONNECTION TYPETHREADED LOCATION NOT OTHERWISE SPECIFIED
THREAD DIRECTIONRIGHT-HAND INLET
BODY SHAPETAPERED
OTHER ITEMS IN FSC 4330 — Centrifugals, Separators, and Pressure and Vacuum Filters
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4330-00-000-0145 4330-00-001-1246 4330-00-001-1733 4330-00-001-2626 4330-00-001-2700 4330-00-001-3511 4330-00-001-3512
SUBSTITUTES & CROSS-REFERENCES 1
F1R12-A55-1012-001Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4450K1?
4450K1 is a PNEUMATIC MUFFLER,EXHAUST-INTAKE.
What parts can replace 4450K1?
There is 1 known substitute for 4450K1: F1R12-A55-1012-001. Substitute compatibility should be verified for your specific system.
What is the NSN for 4450K1?
4450K1 is cataloged in the U.S. Government catalog under NSN 4330-01-425-7680. 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.