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68686E — COVER,ACCESS

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

68686E: COVER,ACCESS.

The COVER,ACCESS is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1010 AND STEEL COMP 1020, hole_diameter: 0.467 INCHES MINIMUM AND 0.474 INCHES MAXIMUM IN, body_thickness: 0.106 INCHES NOMINAL IN, inside_diameter: 2.875 INCHES NOMINAL IN, flange_thickness: 0.106 INCHES NOMINAL IN, outside_diameter: 4.687 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-679-4523, 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
68686E
NSN: 5340-00-679-4523
FSC: 5340 — Hardware, Commercial
CAGE: 09386 — ALLIEDSIGNAL INC ALLIEDSIGNAL BRAKING SYSTEMS-WHEEL END PRODUCTS (USA)
SPECIFICATIONS
materialSTEEL COMP 1010 AND STEEL COMP 1020
hole_diameter0.467 INCHES MINIMUM AND 0.474 INCHES MAXIMUM IN
body_thickness0.106 INCHES NOMINAL IN
inside_diameter2.875 INCHES NOMINAL IN
flange_thickness0.106 INCHES NOMINAL IN
outside_diameter4.687 INCHES NOMINAL IN
surface_treatmentENAMEL
bolt_circle_diameter4.000 INCHES NOMINAL IN
inside_corner_radius3.500 INCHES NOMINAL IN
securing_device_typeTHREADED FASTENER
peripheral_shape_styleROUND, MULTI HOLES
bolt_circle_hole_quantity3
NSN5340-00-679-4523
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 68686E 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-E-529 FED SPEC SINGLE TREATMENT RESPONSE
•
FLANGE THICKNESS: 0.106 INCHES NOMINAL IN
•
BOLT CIRCLE HOLE QUANTITY: 3
•
INSIDE CORNER RADIUS: 3.500 INCHES NOMINAL IN
•
FIRST RECESS INSIDE HEIGHT: 0.531 INCHES NOMINAL IN
•
MOUNTING OPENING SHAPE STYLE: UNTHREADED HOLE
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-00640 FED SPEC ALL MATERIAL RESPONSES
•
CROSS-SECTIONAL SHAPE STYLE: SPHERICAL RECESS
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONTT-E-529 FED SPEC SINGLE TREATMENT RESPONSE
FLANGE THICKNESS0.106 INCHES NOMINAL IN
BOLT CIRCLE HOLE QUANTITY3
INSIDE CORNER RADIUS3.500 INCHES NOMINAL IN
FIRST RECESS INSIDE HEIGHT0.531 INCHES NOMINAL IN
MOUNTING OPENING SHAPE STYLEUNTHREADED HOLE
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-00640 FED SPEC ALL MATERIAL RESPONSES
CROSS-SECTIONAL SHAPE STYLESPHERICAL RECESS
OUTSIDE DIAMETER4.687 INCHES NOMINAL IN
SECURING DEVICE TYPETHREADED FASTENER
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 68686E?
68686E is a COVER,ACCESS.
What is the NSN for 68686E?
68686E is cataloged in the U.S. Government catalog under NSN 5340-00-679-4523. 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.