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12478041 — COVER,ACCESS

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

12478041: COVER,ACCESS.

The COVER,ACCESS is a the manufacturer industrial component. Key specifications include width: 13.690 INCHES NOMINAL IN, length: 21.750 INCHES NOMINAL IN, material: ALUMINUM ALLOY, body_thickness: 0.125 INCHES NOMINAL IN, peripheral_shape_style: RECTANGLE, MULTI HOLES, end_item_identification: 2350-01-390-4683. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-554-8326, 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
12478041
NSN: 5340-01-554-8326
FSC: 5340 — Hardware, Commercial
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
width13.690 INCHES NOMINAL IN
length21.750 INCHES NOMINAL IN
materialALUMINUM ALLOY
body_thickness0.125 INCHES NOMINAL IN
peripheral_shape_styleRECTANGLE, MULTI HOLES
end_item_identification2350-01-390-4683
hole_quantity_along_width8
hole_quantity_along_length10
cross-sectional_shape_styleFLAT
part_name_assigned_by_controlling_agencyCOVER,ACCESS HYDRAULIC CONNECTIONS
distance_from_first_hole_centerline_to_end_along_width0.750 INCHES NOMINAL IN
distance_from_first_hole_centerline_to_end_along_length0.750 INCHES NOMINAL IN
NSN5340-01-554-8326
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 12478041 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
•
DISTANCE FROM FIRST HOLE CENTERLINE TO END ALONG WIDTH: 0.750 INCHES NOMINAL IN
•
LENGTH: 21.750 INCHES NOMINAL IN
•
HOLE QUANTITY ALONG LENGTH: 10
•
CROSS-SECTIONAL SHAPE STYLE: FLAT
•
HOLE QUANTITY ALONG WIDTH: 8
•
DISTANCE FROM FIRST HOLE CENTERLINE TO END ALONG LENGTH: 0.750 INCHES NOMINAL IN
•
PERIPHERAL SHAPE STYLE: RECTANGLE, MULTI HOLES
•
WIDTH: 13.690 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
DISTANCE FROM FIRST HOLE CENTERLINE TO END ALONG WIDTH0.750 INCHES NOMINAL IN
LENGTH21.750 INCHES NOMINAL IN
HOLE QUANTITY ALONG LENGTH10
CROSS-SECTIONAL SHAPE STYLEFLAT
HOLE QUANTITY ALONG WIDTH8
DISTANCE FROM FIRST HOLE CENTERLINE TO END ALONG LENGTH0.750 INCHES NOMINAL IN
PERIPHERAL SHAPE STYLERECTANGLE, MULTI HOLES
WIDTH13.690 INCHES NOMINAL IN
PART NAME ASSIGNED BY CONTROLLING AGENCYCOVER,ACCESS HYDRAULIC CONNECTIONS
END ITEM IDENTIFICATION2350-01-390-4683
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: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 12478041?
12478041 is a COVER,ACCESS.
What is the NSN for 12478041?
12478041 is cataloged in the U.S. Government catalog under NSN 5340-01-554-8326. 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.