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EW-549AZ — COVER,ACCESS

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

EW-549AZ: COVER,ACCESS.

The COVER,ACCESS is a the manufacturer industrial component. Key specifications include material: STEEL, hole_diameter: 0.562 INCHES NOMINAL IN, body_thickness: 0.718 INCHES NOMINAL IN, flange_thickness: 0.156 INCHES NOMINAL IN, outside_diameter: 3.750 INCHES NOMINAL IN, bolt_circle_diameter: 1.740 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-483-8146, 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
EW-549AZ
NSN: 5340-01-483-8146
FSC: 5340 — Hardware, Commercial
CAGE: 65427 — DC FABRICATORS INC (USA)
SPECIFICATIONS
materialSTEEL
hole_diameter0.562 INCHES NOMINAL IN
body_thickness0.718 INCHES NOMINAL IN
flange_thickness0.156 INCHES NOMINAL IN
outside_diameter3.750 INCHES NOMINAL IN
bolt_circle_diameter1.740 INCHES NOMINAL IN
securing_device_typeSPECIAL
peripheral_shape_styleROUND, MULTI HOLES
bolt_circle_hole_quantity4
cross-sectional_shape_styleFLAT, ROUND RIB REINFORCED
mounting_opening_shape_styleUNTHREADED HOLE
material_document_and_classificationASTM A516, GR 70 ASSN STD SINGLE MATERIAL RESPONSE
NSN5340-01-483-8146
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: EW-549AZ 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: 0.156 INCHES NOMINAL IN
•
BOLT CIRCLE HOLE QUANTITY: 4
•
MOUNTING OPENING SHAPE STYLE: UNTHREADED HOLE
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A516, GR 70 ASSN STD SINGLE MATERIAL RESPONSE
•
CROSS-SECTIONAL SHAPE STYLE: FLAT, ROUND RIB REINFORCED
•
OUTSIDE DIAMETER: 3.750 INCHES NOMINAL IN
•
SECURING DEVICE TYPE: SPECIAL
•
BOLT CIRCLE DIAMETER: 1.740 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
FLANGE THICKNESS0.156 INCHES NOMINAL IN
BOLT CIRCLE HOLE QUANTITY4
MOUNTING OPENING SHAPE STYLEUNTHREADED HOLE
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A516, GR 70 ASSN STD SINGLE MATERIAL RESPONSE
CROSS-SECTIONAL SHAPE STYLEFLAT, ROUND RIB REINFORCED
OUTSIDE DIAMETER3.750 INCHES NOMINAL IN
SECURING DEVICE TYPESPECIAL
BOLT CIRCLE DIAMETER1.740 INCHES NOMINAL IN
PERIPHERAL SHAPE STYLEROUND, MULTI HOLES
PART NAME ASSIGNED BY CONTROLLING AGENCYSTEAM CHEST COVER FOR AIR EJECTOR
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 1
EW-2200CT ITEM7Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 EW-549AZ?
EW-549AZ is a COVER,ACCESS.
What parts can replace EW-549AZ?
There is 1 known substitute for EW-549AZ: EW-2200CT ITEM7. Substitute compatibility should be verified for your specific system.
What is the NSN for EW-549AZ?
EW-549AZ is cataloged in the U.S. Government catalog under NSN 5340-01-483-8146. 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.