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717512840-001 — COVER,ACCESS

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

717512840-001: COVER,ACCESS.

The COVER,ACCESS is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 6061, inside_width: 3.515 INCHES MINIMUM AND 3.525 INCHES MAXIMUM IN, hole_diameter: 0.169 INCHES NOMINAL AND 0.191 INCHES NOMINAL IN, body_thickness: 0.100 INCHES NOMINAL IN, flange_thickness: 0.070 INCHES NOMINAL IN, outside_diameter: 4.520 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-285-6779, 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
717512840-001
NSN: 5340-01-285-6779
FSC: 5340 — Hardware, Commercial
CAGE: 04939 — LOCKHEED MARTIN CORPORATION (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 6061
inside_width3.515 INCHES MINIMUM AND 3.525 INCHES MAXIMUM IN
hole_diameter0.169 INCHES NOMINAL AND 0.191 INCHES NOMINAL IN
body_thickness0.100 INCHES NOMINAL IN
flange_thickness0.070 INCHES NOMINAL IN
outside_diameter4.520 INCHES NOMINAL IN
special_featuresONE ADDITIONAL HOLE 0.233 IN. MIN AND 0.239 IN. MAX DIA; ONE CENTER APERTURE 1.000 IN. DIA IN
bolt_circle_diameter4.150 INCHES NOMINAL IN
inside_corner_radius0.060 INCHES NOMINAL IN
securing_device_typeSPECIAL
peripheral_shape_styleROUND, MULTI HOLES
bolt_circle_hole_quantity7
NSN5340-01-285-6779
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 717512840-001 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
•
INSIDE WIDTH: 3.515 INCHES MINIMUM AND 3.525 INCHES MAXIMUM IN
•
FLANGE THICKNESS: 0.070 INCHES NOMINAL IN
•
BOLT CIRCLE HOLE QUANTITY: 7
•
INSIDE CORNER RADIUS: 0.060 INCHES NOMINAL IN
•
FIRST RECESS INSIDE HEIGHT: 0.590 INCHES NOMINAL IN
•
MOUNTING OPENING SHAPE STYLE: UNTHREADED HOLE
•
CROSS-SECTIONAL SHAPE STYLE: SQUARE OR RECTANGULAR RECESS
•
OUTSIDE DIAMETER: 4.520 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
INSIDE WIDTH3.515 INCHES MINIMUM AND 3.525 INCHES MAXIMUM IN
FLANGE THICKNESS0.070 INCHES NOMINAL IN
BOLT CIRCLE HOLE QUANTITY7
INSIDE CORNER RADIUS0.060 INCHES NOMINAL IN
FIRST RECESS INSIDE HEIGHT0.590 INCHES NOMINAL IN
MOUNTING OPENING SHAPE STYLEUNTHREADED HOLE
CROSS-SECTIONAL SHAPE STYLESQUARE OR RECTANGULAR RECESS
OUTSIDE DIAMETER4.520 INCHES NOMINAL IN
SECURING DEVICE TYPESPECIAL
BOLT CIRCLE DIAMETER4.150 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

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 — mutilation + specific procedure
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FREQUENTLY ASKED QUESTIONS
What is 717512840-001?
717512840-001 is a COVER,ACCESS.
What is the NSN for 717512840-001?
717512840-001 is cataloged in the U.S. Government catalog under NSN 5340-01-285-6779. 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.