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53X-01-185 — COVER,ACCESS

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

53X-01-185: COVER,ACCESS.

The COVER,ACCESS is a the manufacturer industrial component. Key specifications include material: STEEL, hole_diameter: 0.468 INCHES NOMINAL IN, body_thickness: 0.630 INCHES NOMINAL IN, outside_diameter: 8.250 INCHES NOMINAL IN, special_features: CENTER HOLE 1.500 IN. DIA; MATERIAL: NITRONIC 50 IN, bolt_circle_diameter: 5.250 INCHES NOMINAL IN.

This part is cataloged in the U.S. Government catalog under NSN 5340-01-357-8694, 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
53X-01-185
NSN: 5340-01-357-8694
FSC: 5340 — Hardware, Commercial
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialSTEEL
hole_diameter0.468 INCHES NOMINAL IN
body_thickness0.630 INCHES NOMINAL IN
outside_diameter8.250 INCHES NOMINAL IN
special_featuresCENTER HOLE 1.500 IN. DIA; MATERIAL: NITRONIC 50 IN
bolt_circle_diameter5.250 INCHES NOMINAL IN
securing_device_typeSPECIAL
peripheral_shape_styleROUND, MULTI HOLES
end_item_identificationW/S:CAPSTANS; TOWED ARRAY HANDLING EQUIPMENT; DECK MACHINERY; SHIP, OHIO CLASS SSN (TRIDENT); SUBMARINE ACOUSTIC SONAR SYSTEMS
bolt_circle_hole_quantity12
cross-sectional_shape_styleFLAT
mounting_opening_shape_styleUNTHREADED HOLE
NSN5340-01-357-8694
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 53X-01-185 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
•
BOLT CIRCLE HOLE QUANTITY: 12
•
MOUNTING OPENING SHAPE STYLE: UNTHREADED HOLE
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A276 ASSN STD SINGLE MATERIAL RESPONSE
•
CROSS-SECTIONAL SHAPE STYLE: FLAT
•
OUTSIDE DIAMETER: 8.250 INCHES NOMINAL IN
•
SECURING DEVICE TYPE: SPECIAL
•
BOLT CIRCLE DIAMETER: 5.250 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
BOLT CIRCLE HOLE QUANTITY12
MOUNTING OPENING SHAPE STYLEUNTHREADED HOLE
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A276 ASSN STD SINGLE MATERIAL RESPONSE
CROSS-SECTIONAL SHAPE STYLEFLAT
OUTSIDE DIAMETER8.250 INCHES NOMINAL IN
SECURING DEVICE TYPESPECIAL
BOLT CIRCLE DIAMETER5.250 INCHES NOMINAL IN
SPECIAL FEATURESCENTER HOLE 1.500 IN. DIA; MATERIAL: NITRONIC 50 IN
PERIPHERAL SHAPE STYLEROUND, MULTI HOLES
END ITEM IDENTIFICATIONW/S:CAPSTANS; TOWED ARRAY HANDLING EQUIPMENT; DECK MACHINERY; SHIP, OHIO CLASS SSN (TRIDENT); SUBMARINE ACOUSTIC SONAR SYSTEMS
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
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 53X-01-185?
53X-01-185 is a COVER,ACCESS.
What is the NSN for 53X-01-185?
53X-01-185 is cataloged in the U.S. Government catalog under NSN 5340-01-357-8694. 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.