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5S1211 — COVER,ACCESS

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

5S1211: COVER,ACCESS.

The COVER,ACCESS is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY, inside_width: 2.903 INCHES NOMINAL IN, hole_diameter: 0.350 INCHES NOMINAL IN, inside_length: 1.265 INCHES NOMINAL IN, body_thickness: 0.451 INCHES NOMINAL IN, flange_thickness: 0.188 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-246-2746, 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
5S1211
NSN: 5340-00-246-2746
FSC: 5340 — Hardware, Commercial
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
materialALUMINUM ALLOY
inside_width2.903 INCHES NOMINAL IN
hole_diameter0.350 INCHES NOMINAL IN
inside_length1.265 INCHES NOMINAL IN
body_thickness0.451 INCHES NOMINAL IN
flange_thickness0.188 INCHES NOMINAL IN
outside_diameter3.315 INCHES NOMINAL IN
bolt_circle_diameter2.625 INCHES NOMINAL IN
securing_device_typeTHREADED FASTENER
peripheral_shape_styleROUND, MULTI HOLES
bolt_circle_hole_quantity5
first_recess_inside_height0.417 INCHES NOMINAL IN
NSN5340-00-246-2746
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 5S1211 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: 2.903 INCHES NOMINAL IN
•
INSIDE LENGTH: 1.265 INCHES NOMINAL IN
•
FLANGE THICKNESS: 0.188 INCHES NOMINAL IN
•
BOLT CIRCLE HOLE QUANTITY: 5
•
FIRST RECESS INSIDE HEIGHT: 0.417 INCHES NOMINAL IN
•
MOUNTING OPENING SHAPE STYLE: UNTHREADED HOLE
•
CROSS-SECTIONAL SHAPE STYLE: SQUARE OR RECTANGULAR RECESS
•
OUTSIDE DIAMETER: 3.315 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
INSIDE WIDTH2.903 INCHES NOMINAL IN
INSIDE LENGTH1.265 INCHES NOMINAL IN
FLANGE THICKNESS0.188 INCHES NOMINAL IN
BOLT CIRCLE HOLE QUANTITY5
FIRST RECESS INSIDE HEIGHT0.417 INCHES NOMINAL IN
MOUNTING OPENING SHAPE STYLEUNTHREADED HOLE
CROSS-SECTIONAL SHAPE STYLESQUARE OR RECTANGULAR RECESS
OUTSIDE DIAMETER3.315 INCHES NOMINAL IN
SECURING DEVICE TYPETHREADED FASTENER
BOLT CIRCLE DIAMETER2.625 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
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 5S1211?
5S1211 is a COVER,ACCESS.
What is the NSN for 5S1211?
5S1211 is cataloged in the U.S. Government catalog under NSN 5340-00-246-2746. 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.