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4S439 — PLUNGER,QUICK RELEASE

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

4S439: PLUNGER,QUICK RELEASE.

The PLUNGER,QUICK RELEASE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, overall_width: 0.1880 INCHES NOMINAL IN, overall_length: 1.2500 INCHES NOMINAL IN, mounting_method: THREADED HOLE(S), end_item_identification: LIGHT ARMORED VEHICLE, part_name_assigned_by_controlling_agency: SPRING PLUNGER. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-711-0976, 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
4S439
NSN: 5340-01-711-0976
FSC: 5340 — Hardware, Commercial
CAGE: 53309 — SCHNEE-MOREHEAD INC (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
overall_width0.1880 INCHES NOMINAL IN
overall_length1.2500 INCHES NOMINAL IN
mounting_methodTHREADED HOLE(S)
end_item_identificationLIGHT ARMORED VEHICLE
part_name_assigned_by_controlling_agencySPRING PLUNGER
NSN5340-01-711-0976
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 4S439 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
•
MOUNTING METHOD: THREADED HOLE(S)
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
TECHNICAL CHARACTERISTICS
MOUNTING METHODTHREADED HOLE(S)
OVERALL LENGTH1.2500 INCHES NOMINAL IN
OVERALL WIDTH0.1880 INCHES NOMINAL IN
PART NAME ASSIGNED BY CONTROLLING AGENCYSPRING PLUNGER
END ITEM IDENTIFICATIONLIGHT ARMORED VEHICLE
MATERIALSTEEL CORROSION RESISTING OVERALL
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
2YLF6Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4S439?
4S439 is a PLUNGER,QUICK RELEASE.
What parts can replace 4S439?
There is 1 known substitute for 4S439: 2YLF6. Substitute compatibility should be verified for your specific system.
What is the NSN for 4S439?
4S439 is cataloged in the U.S. Government catalog under NSN 5340-01-711-0976. This indicates validated use in U.S. government and defense supply chains.
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