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4645266-0001 — COVER,ACCESS

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

4645266-0001: COVER,ACCESS.

The COVER,ACCESS is a the manufacturer industrial component. Key specifications include material: STEEL, inside_diameter: 25.250 INCHES NOMINAL IN, flange_thickness: 3.880 INCHES NOMINAL IN, outside_diameter: 34.750 INCHES NOMINAL IN, inside_corner_radius: 3.750 INCHES NOMINAL IN, peripheral_shape_style: ROUND, ONE HOLE. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-346-1682, 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
4645266-0001
NSN: 5340-01-346-1682
FSC: 5340 — Hardware, Commercial
CAGE: 80064 — NAVAL SHIP SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialSTEEL
inside_diameter25.250 INCHES NOMINAL IN
flange_thickness3.880 INCHES NOMINAL IN
outside_diameter34.750 INCHES NOMINAL IN
inside_corner_radius3.750 INCHES NOMINAL IN
peripheral_shape_styleROUND, ONE HOLE
first_recess_inside_height1.380 INCHES NOMINAL IN
cross-sectional_shape_styleCIRCULAR RECESS
criticality_code_justificationZZZY
bolt_hole_centerline_to_nearest_edge_distance17.375 INCHES NOMINAL IN
reference_number_differentiating_characteristicsQUALITY CONTROL IN ACCORDANCE WITH NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS
NSN5340-01-346-1682
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 4645266-0001 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: 3.880 INCHES NOMINAL IN
•
INSIDE CORNER RADIUS: 3.750 INCHES NOMINAL IN
•
FIRST RECESS INSIDE HEIGHT: 1.380 INCHES NOMINAL IN
•
CRITICALITY CODE JUSTIFICATION: ZZZY
•
CROSS-SECTIONAL SHAPE STYLE: CIRCULAR RECESS
•
OUTSIDE DIAMETER: 34.750 INCHES NOMINAL IN
•
BOLT HOLE CENTERLINE TO NEAREST EDGE DISTANCE: 17.375 INCHES NOMINAL IN
•
INSIDE DIAMETER: 25.250 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
FLANGE THICKNESS3.880 INCHES NOMINAL IN
INSIDE CORNER RADIUS3.750 INCHES NOMINAL IN
FIRST RECESS INSIDE HEIGHT1.380 INCHES NOMINAL IN
CRITICALITY CODE JUSTIFICATIONZZZY
CROSS-SECTIONAL SHAPE STYLECIRCULAR RECESS
OUTSIDE DIAMETER34.750 INCHES NOMINAL IN
BOLT HOLE CENTERLINE TO NEAREST EDGE DISTANCE17.375 INCHES NOMINAL IN
INSIDE DIAMETER25.250 INCHES NOMINAL IN
PERIPHERAL SHAPE STYLEROUND, ONE HOLE
MATERIALSTEEL
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 3
123-4645266 ITEM 1L1Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
4645266-0001L1Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
123-4645266 ITEM 1Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 4645266-0001?
4645266-0001 is a COVER,ACCESS.
What parts can replace 4645266-0001?
There are 3 known substitutes for 4645266-0001: 123-4645266 ITEM 1L1, 4645266-0001L1, 123-4645266 ITEM 1. Substitute compatibility should be verified for your specific system.
What is the NSN for 4645266-0001?
4645266-0001 is cataloged in the U.S. Government catalog under NSN 5340-01-346-1682. 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.