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0263028-1 — COVER,ACCESS

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

0263028-1: COVER,ACCESS.

The COVER,ACCESS is a the manufacturer industrial component. Key specifications include width: 3.760 INCHES NOMINAL IN, length: 6.130 INCHES NOMINAL IN, material: ALUMINUM ALLOY 2024, corner_bevel_length: 0.380 INCHES NOMINAL IN, peripheral_shape_style: RECTANGLE, MULTI HOLES, end_item_identification: B-1B;AN/ALQ-161A A. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-193-4107, 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
0263028-1
NSN: 5340-01-193-4107
FSC: 5340 — Hardware, Commercial
CAGE: 24587 — RAYTHEON CO ESD LONG ISLAND DIV (USA)
SPECIFICATIONS
width3.760 INCHES NOMINAL IN
length6.130 INCHES NOMINAL IN
materialALUMINUM ALLOY 2024
corner_bevel_length0.380 INCHES NOMINAL IN
peripheral_shape_styleRECTANGLE, MULTI HOLES
end_item_identificationB-1B;AN/ALQ-161A A
hole_quantity_along_width3
hole_quantity_along_length6
distance_between_holes_along_width1.062 INCHES NOMINAL IN
distance_between_holes_along_length0.875 INCHES NOMINAL IN
material_document_and_classificationQQ-A-250/4 FED SPEC SINGLE MATERIAL RESPONSE
distance_from_first_hole_centerline_to_end_along_width0.250 INCHES NOMINAL IN
NSN5340-01-193-4107
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 0263028-1 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: 0.250 INCHES NOMINAL IN
•
LENGTH: 6.130 INCHES NOMINAL IN
•
DISTANCE BETWEEN HOLES ALONG LENGTH: 0.875 INCHES NOMINAL IN
•
HOLE QUANTITY ALONG LENGTH: 6
•
CORNER BEVEL LENGTH: 0.380 INCHES NOMINAL IN
•
DISTANCE BETWEEN HOLES ALONG WIDTH: 1.062 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-250/4 FED SPEC SINGLE MATERIAL RESPONSE
•
HOLE QUANTITY ALONG WIDTH: 3
TECHNICAL CHARACTERISTICS
DISTANCE FROM FIRST HOLE CENTERLINE TO END ALONG WIDTH0.250 INCHES NOMINAL IN
LENGTH6.130 INCHES NOMINAL IN
DISTANCE BETWEEN HOLES ALONG LENGTH0.875 INCHES NOMINAL IN
HOLE QUANTITY ALONG LENGTH6
CORNER BEVEL LENGTH0.380 INCHES NOMINAL IN
DISTANCE BETWEEN HOLES ALONG WIDTH1.062 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-250/4 FED SPEC SINGLE MATERIAL RESPONSE
HOLE QUANTITY ALONG WIDTH3
DISTANCE FROM FIRST HOLE CENTERLINE TO END ALONG LENGTH1.000 INCHES NOMINAL IN
PERIPHERAL SHAPE STYLERECTANGLE, MULTI HOLES
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)Demilitarization required — critical (Q)
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FREQUENTLY ASKED QUESTIONS
What is 0263028-1?
0263028-1 is a COVER,ACCESS.
What is the NSN for 0263028-1?
0263028-1 is cataloged in the U.S. Government catalog under NSN 5340-01-193-4107. 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.