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US4-275-012 ITEM O2 CAP — CAP,FILLER OPENING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

US4-275-012 ITEM O2 CAP: CAP,FILLER OPENING.

The CAP,FILLER OPENING is a the manufacturer industrial component. Key specifications include material: ALUMINUM AND STEEL HANDLE, special_features: CAP FOR LIFE BOAT, accommodation_type: KNURLED END GRIPPING, retaining_device_type: CHAIN, pressure_relief_method: MANUAL, system_for_which_designed: PRESSURIZED. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-417-9385, 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
US4-275-012 ITEM O2 CAP
NSN: 5340-01-417-9385
FSC: 5340 — Hardware, Commercial
CAGE: 63504 — PALFINGER MARINE USA, LLC (USA)
SPECIFICATIONS
materialALUMINUM AND STEEL HANDLE
special_featuresCAP FOR LIFE BOAT
accommodation_typeKNURLED END GRIPPING
retaining_device_typeCHAIN
pressure_relief_methodMANUAL
system_for_which_designedPRESSURIZED
NSN5340-01-417-9385
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: US4-275-012 ITEM O2 CAP 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
•
ACCOMMODATION TYPE: KNURLED END GRIPPING
•
RETAINING DEVICE TYPE: CHAIN
•
SYSTEM FOR WHICH DESIGNED: PRESSURIZED
•
PRESSURE RELIEF METHOD: MANUAL
•
MATERIAL: ALUMINUM AND STEEL HANDLE
TECHNICAL CHARACTERISTICS
ACCOMMODATION TYPEKNURLED END GRIPPING
RETAINING DEVICE TYPECHAIN
SYSTEM FOR WHICH DESIGNEDPRESSURIZED
PRESSURE RELIEF METHODMANUAL
SPECIAL FEATURESCAP FOR LIFE BOAT
MATERIALALUMINUM AND STEEL HANDLE
SUBSTITUTES & CROSS-REFERENCES 3
3C5N1K3AAReference document
Same NSN cross-reference
Reference document — Secondary reference
3CSSN1K3AAReference document
Same NSN cross-reference
Reference document — Secondary reference
4965-3Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
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 US4-275-012 ITEM O2 CAP?
US4-275-012 ITEM O2 CAP is a CAP,FILLER OPENING.
What parts can replace US4-275-012 ITEM O2 CAP?
There are 3 known substitutes for US4-275-012 ITEM O2 CAP: 3C5N1K3AA, 3CSSN1K3AA, 4965-3. Substitute compatibility should be verified for your specific system.
What is the NSN for US4-275-012 ITEM O2 CAP?
US4-275-012 ITEM O2 CAP is cataloged in the U.S. Government catalog under NSN 5340-01-417-9385. 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.