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2S9731 — COVER,ACCESS

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

2S9731: COVER,ACCESS.

The COVER,ACCESS is a the manufacturer industrial component. Key specifications include material: STEEL, body_thickness: 0.359 INCHES NOMINAL IN, inside_diameter: 0.555 INCHES NOMINAL IN, flange_thickness: 0.545 INCHES NOMINAL IN, outside_diameter: 4.750 INCHES NOMINAL IN, inside_corner_radius: 0.750 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-195-8288, 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
2S9731
NSN: 5340-00-195-8288
FSC: 5340 — Hardware, Commercial
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
materialSTEEL
body_thickness0.359 INCHES NOMINAL IN
inside_diameter0.555 INCHES NOMINAL IN
flange_thickness0.545 INCHES NOMINAL IN
outside_diameter4.750 INCHES NOMINAL IN
inside_corner_radius0.750 INCHES NOMINAL IN
securing_device_typeFRICTION CATCH
peripheral_shape_styleROUND, ONE HOLE
first_recess_inside_height0.903 INCHES NOMINAL IN
cross-sectional_shape_styleCIRCULAR RECESS
bolt_hole_centerline_to_nearest_edge_distance2.375 INCHES NOMINAL IN
NSN5340-00-195-8288
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 2S9731 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: 0.545 INCHES NOMINAL IN
•
INSIDE CORNER RADIUS: 0.750 INCHES NOMINAL IN
•
FIRST RECESS INSIDE HEIGHT: 0.903 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: CIRCULAR RECESS
•
OUTSIDE DIAMETER: 4.750 INCHES NOMINAL IN
•
BOLT HOLE CENTERLINE TO NEAREST EDGE DISTANCE: 2.375 INCHES NOMINAL IN
•
SECURING DEVICE TYPE: FRICTION CATCH
•
INSIDE DIAMETER: 0.555 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
FLANGE THICKNESS0.545 INCHES NOMINAL IN
INSIDE CORNER RADIUS0.750 INCHES NOMINAL IN
FIRST RECESS INSIDE HEIGHT0.903 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLECIRCULAR RECESS
OUTSIDE DIAMETER4.750 INCHES NOMINAL IN
BOLT HOLE CENTERLINE TO NEAREST EDGE DISTANCE2.375 INCHES NOMINAL IN
SECURING DEVICE TYPEFRICTION CATCH
INSIDE DIAMETER0.555 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

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 2S9731?
2S9731 is a COVER,ACCESS.
What is the NSN for 2S9731?
2S9731 is cataloged in the U.S. Government catalog under NSN 5340-00-195-8288. 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.