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6520-70-800-6041 — COVER,ACCESS

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

6520-70-800-6041: COVER,ACCESS.

The COVER,ACCESS is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 7075, hole_diameter: 0.193 INCHES NOMINAL IN, surface_treatment: PRIMER ZINC CHROMATE, bolt_circle_diameter: 18.000 INCHES NOMINAL IN, securing_device_type: THREADED FASTENER, peripheral_shape_style: ROUND, MULTI HOLES. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-915-6769, 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
6520-70-800-6041
NSN: 5340-00-915-6769
FSC: 5340 — Hardware, Commercial
CAGE: 78286 — SIKORSKY AIRCRAFT CORPORATION DBA SIKORSKY AIRCRAFT CORP (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 7075
hole_diameter0.193 INCHES NOMINAL IN
surface_treatmentPRIMER ZINC CHROMATE
bolt_circle_diameter18.000 INCHES NOMINAL IN
securing_device_typeTHREADED FASTENER
peripheral_shape_styleROUND, MULTI HOLES
bolt_circle_hole_quantity16
mounting_opening_shape_styleUNTHREADED HOLE
material_document_and_classificationQQ-A-250/13,T6 FED SPEC SINGLE MATERIAL RESPONSE
surface_treatment_document_and_classificationTT-P-7757 FED SPEC SINGLE TREATMENT RESPONSE
NSN5340-00-915-6769
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 6520-70-800-6041 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: TT-P-7757 FED SPEC SINGLE TREATMENT RESPONSE
•
BOLT CIRCLE HOLE QUANTITY: 16
•
MOUNTING OPENING SHAPE STYLE: UNTHREADED HOLE
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-250/13,T6 FED SPEC SINGLE MATERIAL RESPONSE
•
SECURING DEVICE TYPE: THREADED FASTENER
•
BOLT CIRCLE DIAMETER: 18.000 INCHES NOMINAL IN
•
SURFACE TREATMENT: PRIMER ZINC CHROMATE
•
PERIPHERAL SHAPE STYLE: ROUND, MULTI HOLES
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONTT-P-7757 FED SPEC SINGLE TREATMENT RESPONSE
BOLT CIRCLE HOLE QUANTITY16
MOUNTING OPENING SHAPE STYLEUNTHREADED HOLE
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-250/13,T6 FED SPEC SINGLE MATERIAL RESPONSE
SECURING DEVICE TYPETHREADED FASTENER
BOLT CIRCLE DIAMETER18.000 INCHES NOMINAL IN
SURFACE TREATMENTPRIMER ZINC CHROMATE
PERIPHERAL SHAPE STYLEROUND, MULTI HOLES
MATERIALALUMINUM ALLOY 7075
HOLE DIAMETER0.193 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: Terminal item — no further procurement; issued until stock is exhaustedDemilitarization required — critical (Q)
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FREQUENTLY ASKED QUESTIONS
What is 6520-70-800-6041?
6520-70-800-6041 is a COVER,ACCESS.
What is the NSN for 6520-70-800-6041?
6520-70-800-6041 is cataloged in the U.S. Government catalog under NSN 5340-00-915-6769. 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.