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790-6403000-6 — COVER,ACCESS

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

790-6403000-6: COVER,ACCESS.

The COVER,ACCESS is a the manufacturer industrial component. Key specifications include width: 19.200 INCHES NOMINAL IN, length: 19.840 INCHES NOMINAL IN, corner_radius: 0.500 INCHES NOMINAL IN, body_thickness: 0.250 INCHES NOMINAL IN, peripheral_shape_style: RECTANGLE, MULTI HOLES, cross-sectional_shape_style: FLAT. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-425-8487, 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
790-6403000-6
NSN: 5340-01-425-8487
FSC: 5340 — Hardware, Commercial
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
width19.200 INCHES NOMINAL IN
length19.840 INCHES NOMINAL IN
corner_radius0.500 INCHES NOMINAL IN
body_thickness0.250 INCHES NOMINAL IN
peripheral_shape_styleRECTANGLE, MULTI HOLES
hole_quantity_along_width6
cross-sectional_shape_styleFLAT
distance_between_holes_along_width7.000 INCHES NOMINAL IN
distance_between_holes_along_length19.000 INCHES NOMINAL IN
distance_from_first_hole_centerline_to_end_along_width2.900 INCHES NOMINAL IN
distance_from_first_hole_centerline_to_end_along_length0.420 INCHES NOMINAL IN
NSN5340-01-425-8487
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 790-6403000-6 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: 2.900 INCHES NOMINAL IN
•
CORNER RADIUS: 0.500 INCHES NOMINAL IN
•
LENGTH: 19.840 INCHES NOMINAL IN
•
DISTANCE BETWEEN HOLES ALONG LENGTH: 19.000 INCHES NOMINAL IN
•
DISTANCE BETWEEN HOLES ALONG WIDTH: 7.000 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: FLAT
•
HOLE QUANTITY ALONG WIDTH: 6
•
DISTANCE FROM FIRST HOLE CENTERLINE TO END ALONG LENGTH: 0.420 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
DISTANCE FROM FIRST HOLE CENTERLINE TO END ALONG WIDTH2.900 INCHES NOMINAL IN
CORNER RADIUS0.500 INCHES NOMINAL IN
LENGTH19.840 INCHES NOMINAL IN
DISTANCE BETWEEN HOLES ALONG LENGTH19.000 INCHES NOMINAL IN
DISTANCE BETWEEN HOLES ALONG WIDTH7.000 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLEFLAT
HOLE QUANTITY ALONG WIDTH6
DISTANCE FROM FIRST HOLE CENTERLINE TO END ALONG LENGTH0.420 INCHES NOMINAL IN
PERIPHERAL SHAPE STYLERECTANGLE, MULTI HOLES
WIDTH19.200 INCHES NOMINAL IN
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 1
790-6403022 REV AReference document
Same NSN cross-reference
Reference document — Drawing number reference only
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 790-6403000-6?
790-6403000-6 is a COVER,ACCESS.
What parts can replace 790-6403000-6?
There is 1 known substitute for 790-6403000-6: 790-6403022 REV A. Substitute compatibility should be verified for your specific system.
What is the NSN for 790-6403000-6?
790-6403000-6 is cataloged in the U.S. Government catalog under NSN 5340-01-425-8487. 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.