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10390405 — COVER,ACCESS

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

10390405: COVER,ACCESS.

The COVER,ACCESS is a the manufacturer industrial component. Key specifications include width: 3.810 INCHES NOMINAL IN, length: 3.810 INCHES NOMINAL IN, material: ALUMINUM ALLOY 5052 OR ALUMINUM ALLOY 5086, corner_radius: 0.590 INCHES NOMINAL IN, hole_diameter: 0.281 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN, body_thickness: 0.190 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-106-8137, 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
10390405
NSN: 5340-01-106-8137
FSC: 5340 — Hardware, Commercial
CAGE: A486G — NIMIKKEISTOKESKUS NCB FINLAND (FIN)
SPECIFICATIONS
width3.810 INCHES NOMINAL IN
length3.810 INCHES NOMINAL IN
materialALUMINUM ALLOY 5052 OR ALUMINUM ALLOY 5086
corner_radius0.590 INCHES NOMINAL IN
hole_diameter0.281 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN
body_thickness0.190 INCHES NOMINAL IN
features_providedSPECIAL MARKING
securing_device_typeSPECIAL
peripheral_shape_styleRECTANGLE, MULTI HOLES
end_item_identificationARMORED MULTI-PURPOSE VEHICLE (AMPV); MULTIPLE LAUNCH ROCKET SYSTEM (MLRS); A4 BRADLEY FIGHTING VEHICLE; A3 BRADLEY FIGHTING VEHICLE
hole_quantity_along_length3
cross-sectional_shape_styleFLAT
NSN5340-01-106-8137
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 10390405 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: 1.525 INCHES NOMINAL IN
•
CORNER RADIUS: 0.590 INCHES NOMINAL IN
•
LENGTH: 3.810 INCHES NOMINAL IN
•
DISTANCE BETWEEN HOLES ALONG LENGTH: 1.500 INCHES NOMINAL IN
•
HOLE QUANTITY ALONG LENGTH: 3
•
MOUNTING OPENING SHAPE STYLE: UNTHREADED HOLE
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-250/8 FED SPEC 1ST MATERIAL RESPONSE AND QQ-A-250/7 FED SPEC 2ND MATERIAL RESPONSE
•
CROSS-SECTIONAL SHAPE STYLE: FLAT
TECHNICAL CHARACTERISTICS
DISTANCE FROM FIRST HOLE CENTERLINE TO END ALONG WIDTH1.525 INCHES NOMINAL IN
CORNER RADIUS0.590 INCHES NOMINAL IN
LENGTH3.810 INCHES NOMINAL IN
DISTANCE BETWEEN HOLES ALONG LENGTH1.500 INCHES NOMINAL IN
HOLE QUANTITY ALONG LENGTH3
MOUNTING OPENING SHAPE STYLEUNTHREADED HOLE
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-250/8 FED SPEC 1ST MATERIAL RESPONSE AND QQ-A-250/7 FED SPEC 2ND MATERIAL RESPONSE
CROSS-SECTIONAL SHAPE STYLEFLAT
FEATURES PROVIDEDSPECIAL MARKING
SECURING DEVICE TYPESPECIAL
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 10390405?
10390405 is a COVER,ACCESS.
What is the NSN for 10390405?
10390405 is cataloged in the U.S. Government catalog under NSN 5340-01-106-8137. 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.