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25203540771 — COVER,ACCESS

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

25203540771: COVER,ACCESS.

The COVER,ACCESS is a the manufacturer industrial component. Key specifications include width: 4.875 INCHES NOMINAL IN, length: 6.250 INCHES NOMINAL IN, material: STEEL, inside_width: 3.005 INCHES NOMINAL IN, corner_radius: 1.250 INCHES NOMINAL IN, hole_diameter: 0.406 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-354-0771, 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
25203540771
NSN: 5340-00-354-0771
FSC: 5340 — Hardware, Commercial
CAGE: A00AM — E.C.A ETABLISSEMENT CENTRAL DES APPROVISIONNEMENTS DES FORCES ARMEES ROYALES
SPECIFICATIONS
width4.875 INCHES NOMINAL IN
length6.250 INCHES NOMINAL IN
materialSTEEL
inside_width3.005 INCHES NOMINAL IN
corner_radius1.250 INCHES NOMINAL IN
hole_diameter0.406 INCHES NOMINAL IN
inside_length4.380 INCHES NOMINAL IN
body_thickness0.060 INCHES NOMINAL IN
flange_thickness0.060 INCHES NOMINAL IN
fsc_application_dataTRANSMISSION,MECHANICAL,VEHICULAR
inside_corner_radius0.094 INCHES NOMINAL IN
securing_device_typeTHREADED FASTENER
NSN5340-00-354-0771
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 25203540771 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: 2.438 INCHES NOMINAL IN
•
FSC APPLICATION DATA: TRANSMISSION,MECHANICAL,VEHICULAR
•
INSIDE WIDTH: 3.005 INCHES NOMINAL IN
•
CORNER RADIUS: 1.250 INCHES NOMINAL IN
•
LENGTH: 6.250 INCHES NOMINAL IN
•
INSIDE LENGTH: 4.380 INCHES NOMINAL IN
•
DISTANCE BETWEEN HOLES ALONG LENGTH: 2.750 INCHES NOMINAL IN
•
FLANGE THICKNESS: 0.060 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
DISTANCE FROM FIRST HOLE CENTERLINE TO END ALONG WIDTH2.438 INCHES NOMINAL IN
FSC APPLICATION DATATRANSMISSION,MECHANICAL,VEHICULAR
INSIDE WIDTH3.005 INCHES NOMINAL IN
CORNER RADIUS1.250 INCHES NOMINAL IN
LENGTH6.250 INCHES NOMINAL IN
INSIDE LENGTH4.380 INCHES NOMINAL IN
DISTANCE BETWEEN HOLES ALONG LENGTH2.750 INCHES NOMINAL IN
FLANGE THICKNESS0.060 INCHES NOMINAL IN
INSIDE CORNER RADIUS0.094 INCHES NOMINAL IN
FIRST RECESS INSIDE HEIGHT0.221 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 2
BB7165Reference document
Same NSN cross-reference
Reference document — Secondary reference
2520003540771Reference document
Same NSN cross-reference
Reference document — Informative 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 25203540771?
25203540771 is a COVER,ACCESS.
What parts can replace 25203540771?
There are 2 known substitutes for 25203540771: BB7165, 2520003540771. Substitute compatibility should be verified for your specific system.
What is the NSN for 25203540771?
25203540771 is cataloged in the U.S. Government catalog under NSN 5340-00-354-0771. 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.