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7403506 — COVER,ACCESS

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

7403506: COVER,ACCESS.

The COVER,ACCESS is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY, inside_width: 2.500 INCHES NOMINAL IN, body_thickness: 0.218 INCHES NOMINAL IN, outside_diameter: 2.750 INCHES NOMINAL IN, special_features: MADE FOR ORDALT 71321, surface_treatment: ANODIZE. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-552-9833, 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
7403506
NSN: 5340-01-552-9833
FSC: 5340 — Hardware, Commercial
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialALUMINUM ALLOY
inside_width2.500 INCHES NOMINAL IN
body_thickness0.218 INCHES NOMINAL IN
outside_diameter2.750 INCHES NOMINAL IN
special_featuresMADE FOR ORDALT 71321
surface_treatmentANODIZE
peripheral_shape_styleROUND, NO HOLES
end_item_identificationMK 63 MOD 2 SHIELD
first_recess_inside_height1.250 INCHES NOMINAL IN
cross-sectional_shape_styleSQUARE OR RECTANGULAR RECESS
material_document_and_classificationUNS A96061-T6 ASSN STD SINGLE MATERIAL RESPONSE
part_name_assigned_by_controlling_agencyCOVER, ACTUATOR
NSN5340-01-552-9833
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 7403506 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
•
INSIDE WIDTH: 2.500 INCHES NOMINAL IN
•
FIRST RECESS INSIDE HEIGHT: 1.250 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: UNS A96061-T6 ASSN STD SINGLE MATERIAL RESPONSE
•
CROSS-SECTIONAL SHAPE STYLE: SQUARE OR RECTANGULAR RECESS
•
OUTSIDE DIAMETER: 2.750 INCHES NOMINAL IN
•
SURFACE TREATMENT: ANODIZE
•
PERIPHERAL SHAPE STYLE: ROUND, NO HOLES
TECHNICAL CHARACTERISTICS
INSIDE WIDTH2.500 INCHES NOMINAL IN
FIRST RECESS INSIDE HEIGHT1.250 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONUNS A96061-T6 ASSN STD SINGLE MATERIAL RESPONSE
CROSS-SECTIONAL SHAPE STYLESQUARE OR RECTANGULAR RECESS
OUTSIDE DIAMETER2.750 INCHES NOMINAL IN
SPECIAL FEATURESMADE FOR ORDALT 71321
SURFACE TREATMENTANODIZE
PERIPHERAL SHAPE STYLEROUND, NO HOLES
PART NAME ASSIGNED BY CONTROLLING AGENCYCOVER, ACTUATOR
END ITEM IDENTIFICATIONMK 63 MOD 2 SHIELD
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

No substitute or cross-reference records for this part.

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 7403506?
7403506 is a COVER,ACCESS.
What is the NSN for 7403506?
7403506 is cataloged in the U.S. Government catalog under NSN 5340-01-552-9833. 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.