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4452K544 — PLUG,VENT

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

4452K544: PLUG,VENT.

The PLUG,VENT is a the manufacturer industrial component. Key specifications include length: 0.560 INCHES NOMINAL IN, material: STEEL CORROSION RESISTING, outside_diameter: 0.500 INCHES NOMINAL IN, special_features: 0.375 HEX SOCKET PLUG, end_connection_type: THREADED, end_item_identification: HPU ASSEMBLY. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-644-2944, 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
4452K544
NSN: 5340-01-644-2944
FSC: 5340 — Hardware, Commercial
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
length0.560 INCHES NOMINAL IN
materialSTEEL CORROSION RESISTING
outside_diameter0.500 INCHES NOMINAL IN
special_features0.375 HEX SOCKET PLUG
end_connection_typeTHREADED
end_item_identificationHPU ASSEMBLY
thread_size_and_series/type_designatorTPI 14 NPTF
NSN5340-01-644-2944
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 4452K544 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
LENGTH: 0.560 INCHES NOMINAL IN
•
END CONNECTION TYPE: THREADED
•
OUTSIDE DIAMETER: 0.500 INCHES NOMINAL IN
•
MATERIAL: STEEL CORROSION RESISTING
•
THREAD SIZE AND SERIES/TYPE DESIGNATOR: TPI 14 NPTF
TECHNICAL CHARACTERISTICS
LENGTH0.560 INCHES NOMINAL IN
END CONNECTION TYPETHREADED
OUTSIDE DIAMETER0.500 INCHES NOMINAL IN
SPECIAL FEATURES0.375 HEX SOCKET PLUG
END ITEM IDENTIFICATIONHPU ASSEMBLY
MATERIALSTEEL CORROSION RESISTING
THREAD SIZE AND SERIES/TYPE DESIGNATORTPI 14 NPTF
OTHER ITEMS IN FSC 5340 — Hardware, Commercial
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5340-00-000-0068 5340-00-000-0132 5340-00-000-8150 5340-00-001-1251 5340-00-001-1264 5340-00-001-1265 5340-00-001-1266 5340-00-001-1275
SUBSTITUTES & CROSS-REFERENCES 1
F143203 REV J ITEM NO50Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4452K544?
4452K544 is a PLUG,VENT.
What parts can replace 4452K544?
There is 1 known substitute for 4452K544: F143203 REV J ITEM NO50. Substitute compatibility should be verified for your specific system.
What is the NSN for 4452K544?
4452K544 is cataloged in the U.S. Government catalog under NSN 5340-01-644-2944. 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.