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G257286-1 — COVER,ACCESS

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

G257286-1: COVER,ACCESS.

The COVER,ACCESS is a the manufacturer industrial component. Key specifications include width: 2.630 INCHES NOMINAL IN, length: 10.440 INCHES NOMINAL IN, material: ALUMINUM ALLOY 6061, body_thickness: 0.540 INCHES NOMINAL IN, securing_device_type: THREADED FASTENER, peripheral_shape_style: RECTANGLE, MULTI HOLES. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-209-9933, 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
G257286-1
NSN: 5340-01-209-9933
FSC: 5340 — Hardware, Commercial
CAGE: 3B150 — RAYTHEON COMPANY DBA RAYTHEON CO (USA)
SPECIFICATIONS
width2.630 INCHES NOMINAL IN
length10.440 INCHES NOMINAL IN
materialALUMINUM ALLOY 6061
body_thickness0.540 INCHES NOMINAL IN
securing_device_typeTHREADED FASTENER
peripheral_shape_styleRECTANGLE, MULTI HOLES
end_item_identificationAN/ALQ-184 ECM POD
hole_quantity_along_length13
cross-sectional_shape_styleFLAT
distance_between_holes_along_length1.600 INCHES NOMINAL IN
distance_from_first_hole_centerline_to_end_along_width0.490 INCHES NOMINAL IN
distance_from_first_hole_centerline_to_end_along_length0.330 INCHES NOMINAL IN
NSN5340-01-209-9933
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: G257286-1 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: 0.490 INCHES NOMINAL IN
•
LENGTH: 10.440 INCHES NOMINAL IN
•
DISTANCE BETWEEN HOLES ALONG LENGTH: 1.600 INCHES NOMINAL IN
•
HOLE QUANTITY ALONG LENGTH: 13
•
CROSS-SECTIONAL SHAPE STYLE: FLAT
•
SECURING DEVICE TYPE: THREADED FASTENER
•
DISTANCE FROM FIRST HOLE CENTERLINE TO END ALONG LENGTH: 0.330 INCHES NOMINAL IN
•
PERIPHERAL SHAPE STYLE: RECTANGLE, MULTI HOLES
TECHNICAL CHARACTERISTICS
DISTANCE FROM FIRST HOLE CENTERLINE TO END ALONG WIDTH0.490 INCHES NOMINAL IN
LENGTH10.440 INCHES NOMINAL IN
DISTANCE BETWEEN HOLES ALONG LENGTH1.600 INCHES NOMINAL IN
HOLE QUANTITY ALONG LENGTH13
CROSS-SECTIONAL SHAPE STYLEFLAT
SECURING DEVICE TYPETHREADED FASTENER
DISTANCE FROM FIRST HOLE CENTERLINE TO END ALONG LENGTH0.330 INCHES NOMINAL IN
PERIPHERAL SHAPE STYLERECTANGLE, MULTI HOLES
WIDTH2.630 INCHES NOMINAL IN
END ITEM IDENTIFICATIONAN/ALQ-184 ECM POD
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 G257286-1?
G257286-1 is a COVER,ACCESS.
What is the NSN for G257286-1?
G257286-1 is cataloged in the U.S. Government catalog under NSN 5340-01-209-9933. 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.