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3866Z416 — COVER,ACCESS

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

3866Z416: COVER,ACCESS.

The COVER,ACCESS is a the manufacturer industrial component. Key specifications include material: IRON CAST, hole_diameter: 0.469 INCHES NOMINAL IN, body_thickness: 0.250 INCHES NOMINAL IN, inside_diameter: 4.500 INCHES NOMINAL IN, flange_thickness: 0.438 INCHES NOMINAL IN, bolt_circle_diameter: 6.000 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-734-8096, 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
3866Z416
NSN: 5340-00-734-8096
FSC: 5340 — Hardware, Commercial
CAGE: 78500 — MERITOR HEAVY VEHICLE SYSTEMS, LLC (USA)
SPECIFICATIONS
materialIRON CAST
hole_diameter0.469 INCHES NOMINAL IN
body_thickness0.250 INCHES NOMINAL IN
inside_diameter4.500 INCHES NOMINAL IN
flange_thickness0.438 INCHES NOMINAL IN
bolt_circle_diameter6.000 INCHES NOMINAL IN
inside_corner_radius0.250 INCHES NOMINAL IN
securing_device_typeTHREADED FASTENER
bolt_circle_hole_quantity6
first_recess_inside_height0.250 INCHES NOMINAL IN
mounting_opening_shape_styleUNTHREADED HOLE
NSN5340-00-734-8096
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 3866Z416 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
•
FLANGE THICKNESS: 0.438 INCHES NOMINAL IN
•
BOLT CIRCLE HOLE QUANTITY: 6
•
INSIDE CORNER RADIUS: 0.250 INCHES NOMINAL IN
•
FIRST RECESS INSIDE HEIGHT: 0.250 INCHES NOMINAL IN
•
MOUNTING OPENING SHAPE STYLE: UNTHREADED HOLE
•
SECURING DEVICE TYPE: THREADED FASTENER
•
INSIDE DIAMETER: 4.500 INCHES NOMINAL IN
•
BOLT CIRCLE DIAMETER: 6.000 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
FLANGE THICKNESS0.438 INCHES NOMINAL IN
BOLT CIRCLE HOLE QUANTITY6
INSIDE CORNER RADIUS0.250 INCHES NOMINAL IN
FIRST RECESS INSIDE HEIGHT0.250 INCHES NOMINAL IN
MOUNTING OPENING SHAPE STYLEUNTHREADED HOLE
SECURING DEVICE TYPETHREADED FASTENER
INSIDE DIAMETER4.500 INCHES NOMINAL IN
BOLT CIRCLE DIAMETER6.000 INCHES NOMINAL IN
MATERIALIRON CAST
HOLE DIAMETER0.469 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
7348096Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Demilitarization required — mutilation
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FREQUENTLY ASKED QUESTIONS
What is 3866Z416?
3866Z416 is a COVER,ACCESS.
What parts can replace 3866Z416?
There is 1 known substitute for 3866Z416: 7348096. Substitute compatibility should be verified for your specific system.
What is the NSN for 3866Z416?
3866Z416 is cataloged in the U.S. Government catalog under NSN 5340-00-734-8096. 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.