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6565-21-111-4041 — COVER,ACCESS

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

6565-21-111-4041: COVER,ACCESS.

The COVER,ACCESS is a the manufacturer industrial component. Key specifications include width: 2.910 INCHES NOMINAL IN, length: 3.250 INCHES NOMINAL IN, material: PLASTIC, inside_angle: 45.0 DEGREES NOMINAL, inside_width: 1.620 INCHES NOMINAL IN, corner_radius: 0.250 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-939-9045, 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
6565-21-111-4041
NSN: 5340-00-939-9045
FSC: 5340 — Hardware, Commercial
CAGE: 78286 — SIKORSKY AIRCRAFT CORPORATION DBA SIKORSKY AIRCRAFT CORP (USA)
SPECIFICATIONS
width2.910 INCHES NOMINAL IN
length3.250 INCHES NOMINAL IN
materialPLASTIC
inside_angle45.0 DEGREES NOMINAL
inside_width1.620 INCHES NOMINAL IN
corner_radius0.250 INCHES NOMINAL IN
hole_diameter0.390 INCHES NOMINAL IN
inside_length3.250 INCHES NOMINAL IN
body_thickness0.033 INCHES NOMINAL IN
flange_thickness0.033 INCHES NOMINAL IN
fsc_application_dataAIRCRAFT HYDRAULIC,VACUUM,AND DE-ICING SYSTEMS COMPONENTS
peripheral_shape_styleRECTANGLE, ONE CENTER HOLE
NSN5340-00-939-9045
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 6565-21-111-4041 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: 1.910 INCHES NOMINAL IN
•
FSC APPLICATION DATA: AIRCRAFT HYDRAULIC,VACUUM,AND DE-ICING SYSTEMS COMPONENTS
•
INSIDE WIDTH: 1.620 INCHES NOMINAL IN
•
CORNER RADIUS: 0.250 INCHES NOMINAL IN
•
LENGTH: 3.250 INCHES NOMINAL IN
•
INSIDE LENGTH: 3.250 INCHES NOMINAL IN
•
FLANGE THICKNESS: 0.033 INCHES NOMINAL IN
•
FIRST RECESS INSIDE HEIGHT: 0.460 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
DISTANCE FROM FIRST HOLE CENTERLINE TO END ALONG WIDTH1.910 INCHES NOMINAL IN
FSC APPLICATION DATAAIRCRAFT HYDRAULIC,VACUUM,AND DE-ICING SYSTEMS COMPONENTS
INSIDE WIDTH1.620 INCHES NOMINAL IN
CORNER RADIUS0.250 INCHES NOMINAL IN
LENGTH3.250 INCHES NOMINAL IN
INSIDE LENGTH3.250 INCHES NOMINAL IN
FLANGE THICKNESS0.033 INCHES NOMINAL IN
FIRST RECESS INSIDE HEIGHT0.460 INCHES NOMINAL IN
MOUNTING OPENING SHAPE STYLEUNTHREADED HOLE
CROSS-SECTIONAL SHAPE STYLESQUARE OR RECTANGULAR RECESS
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
65652-11114Reference 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 6565-21-111-4041?
6565-21-111-4041 is a COVER,ACCESS.
What parts can replace 6565-21-111-4041?
There is 1 known substitute for 6565-21-111-4041: 65652-11114. Substitute compatibility should be verified for your specific system.
What is the NSN for 6565-21-111-4041?
6565-21-111-4041 is cataloged in the U.S. Government catalog under NSN 5340-00-939-9045. 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.