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74A321421-1049 — COVER,ACCESS

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

74A321421-1049: COVER,ACCESS.

The COVER,ACCESS is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY, securing_device_type: THREADED FASTENER, end_item_identification: AIRCRAFT MODEL F-18, mounting_opening_shape_style: UNTHREADED HOLE, material_document_and_classification: MMS-1420,COND T-73651 ASSN STD SINGLE MATERIAL RESPONSE. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-154-4767, 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
74A321421-1049
NSN: 5340-01-154-4767
FSC: 5340 — Hardware, Commercial
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialALUMINUM ALLOY
securing_device_typeTHREADED FASTENER
end_item_identificationAIRCRAFT MODEL F-18
mounting_opening_shape_styleUNTHREADED HOLE
material_document_and_classificationMMS-1420,COND T-73651 ASSN STD SINGLE MATERIAL RESPONSE
NSN5340-01-154-4767
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 74A321421-1049 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 OPENING SHAPE STYLE: UNTHREADED HOLE
•
MATERIAL DOCUMENT AND CLASSIFICATION: MMS-1420,COND T-73651 ASSN STD SINGLE MATERIAL RESPONSE
•
SECURING DEVICE TYPE: THREADED FASTENER
•
MATERIAL: ALUMINUM ALLOY
TECHNICAL CHARACTERISTICS
MOUNTING OPENING SHAPE STYLEUNTHREADED HOLE
MATERIAL DOCUMENT AND CLASSIFICATIONMMS-1420,COND T-73651 ASSN STD SINGLE MATERIAL RESPONSE
SECURING DEVICE TYPETHREADED FASTENER
END ITEM IDENTIFICATIONAIRCRAFT MODEL F-18
MATERIALALUMINUM ALLOY
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
10130420Reference document
Same NSN cross-reference
Reference document — Informative reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Demilitarization required — critical (Q)
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FREQUENTLY ASKED QUESTIONS
What is 74A321421-1049?
74A321421-1049 is a COVER,ACCESS.
What parts can replace 74A321421-1049?
There is 1 known substitute for 74A321421-1049: 10130420. Substitute compatibility should be verified for your specific system.
What is the NSN for 74A321421-1049?
74A321421-1049 is cataloged in the U.S. Government catalog under NSN 5340-01-154-4767. This indicates validated use in U.S. government and defense supply chains.
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