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3408A144 — PLUNGER,QUICK RELEASE

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

3408A144: PLUNGER,QUICK RELEASE.

The PLUNGER,QUICK RELEASE is a the manufacturer industrial component. Key specifications include shape: ROUND, material: STEEL CORROSION RESISTING AND STEEL COMP 440C BLOCK, thread_length: 0.600 INCHES NOMINAL IN, overall_length: 0.673 INCHES NOMINAL IN, overall_diameter: 0.375 INCHES NOMINAL IN, special_features: NEXT ASSY 3392AS2119 AND 3392AS2112;USED ON MH-60S AHMK. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-657-5657, 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
3408A144
NSN: 5340-01-657-5657
FSC: 5340 — Hardware, Commercial
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
shapeROUND
materialSTEEL CORROSION RESISTING AND STEEL COMP 440C BLOCK
thread_length0.600 INCHES NOMINAL IN
overall_length0.673 INCHES NOMINAL IN
overall_diameter0.375 INCHES NOMINAL IN
special_featuresNEXT ASSY 3392AS2119 AND 3392AS2112;USED ON MH-60S AHMK
thread_directionRIGHT-HAND
end_pressure_rating6.0 POUNDS MINIMUM AND 21.0 POUNDS MAXIMUM LBS
nominal_thread_size16.0 INCHES IN
end_item_identificationMH-60S
thread_quantity_per_inch2A A
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
NSN5340-01-657-5657
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 3408A144 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
•
OVERALL DIAMETER: 0.375 INCHES NOMINAL IN
•
THREAD LENGTH: 0.600 INCHES NOMINAL IN
•
SHAPE: ROUND
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 16.0 INCHES IN
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER0.375 INCHES NOMINAL IN
THREAD LENGTH0.600 INCHES NOMINAL IN
SHAPEROUND
OVERALL LENGTH0.673 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE16.0 INCHES IN
SPECIAL FEATURESNEXT ASSY 3392AS2119 AND 3392AS2112;USED ON MH-60S AHMK
PART NAME ASSIGNED BY CONTROLLING AGENCYSPRING PLUNGER, BALL NOSE
END ITEM IDENTIFICATIONMH-60S
THREAD QUANTITY PER INCH2A A
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
3392AS2483Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 3408A144?
3408A144 is a PLUNGER,QUICK RELEASE.
What parts can replace 3408A144?
There is 1 known substitute for 3408A144: 3392AS2483. Substitute compatibility should be verified for your specific system.
What is the NSN for 3408A144?
3408A144 is cataloged in the U.S. Government catalog under NSN 5340-01-657-5657. 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.