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7439075-523 — MOUNT,RESILIENT,UTILITY

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

7439075-523: MOUNT,RESILIENT,UTILITY.

The MOUNT,RESILIENT,UTILITY is a the manufacturer industrial component. Key specifications include height: 1.125 INCHES NOMINAL IN, flange_width: 1.750 INCHES NOMINAL IN, flange_length: 1.750 INCHES NOMINAL IN, inside_diameter: 0.255 INCHES MINIMUM AND 0.264 INCHES MAXIMUM IN, flange_thickness: 0.063 INCHES NOMINAL IN, style_designator: ROUND W/BUSHING FOUR-HOLE FLANGE. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-546-5111, 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
7439075-523
NSN: 5340-00-546-5111
FSC: 5340 — Hardware, Commercial
CAGE: 18355 — THE BOEING COMPANY (USA)
SPECIFICATIONS
height1.125 INCHES NOMINAL IN
flange_width1.750 INCHES NOMINAL IN
flange_length1.750 INCHES NOMINAL IN
inside_diameter0.255 INCHES MINIMUM AND 0.264 INCHES MAXIMUM IN
flange_thickness0.063 INCHES NOMINAL IN
style_designatorROUND W/BUSHING FOUR-HOLE FLANGE
distance_from_flange_to_end0.438 INCHES NOMINAL IN
flange_mounting_hole_diameter0.164 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN
distance_between_mounting_hole_centers1.375 INCHES NOMINAL IN
shortest_distance_between_mounting_hole_centers0.187 INCHES NOMINAL IN
NSN5340-00-546-5111
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 7439075-523 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 MOUNTING HOLE DIAMETER: 0.164 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN
•
DISTANCE BETWEEN MOUNTING HOLE CENTERS: 1.375 INCHES NOMINAL IN
•
FLANGE THICKNESS: 0.063 INCHES NOMINAL IN
•
STYLE DESIGNATOR: ROUND W/BUSHING FOUR-HOLE FLANGE
•
FLANGE LENGTH: 1.750 INCHES NOMINAL IN
•
DISTANCE FROM FLANGE TO END: 0.438 INCHES NOMINAL IN
•
SHORTEST DISTANCE BETWEEN MOUNTING HOLE CENTERS: 0.187 INCHES NOMINAL IN
•
INSIDE DIAMETER: 0.255 INCHES MINIMUM AND 0.264 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
FLANGE MOUNTING HOLE DIAMETER0.164 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN
DISTANCE BETWEEN MOUNTING HOLE CENTERS1.375 INCHES NOMINAL IN
FLANGE THICKNESS0.063 INCHES NOMINAL IN
STYLE DESIGNATORROUND W/BUSHING FOUR-HOLE FLANGE
FLANGE LENGTH1.750 INCHES NOMINAL IN
DISTANCE FROM FLANGE TO END0.438 INCHES NOMINAL IN
SHORTEST DISTANCE BETWEEN MOUNTING HOLE CENTERS0.187 INCHES NOMINAL IN
INSIDE DIAMETER0.255 INCHES MINIMUM AND 0.264 INCHES MAXIMUM IN
HEIGHT1.125 INCHES NOMINAL IN
FLANGE WIDTH1.750 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 1
K375-2Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 7439075-523?
7439075-523 is a MOUNT,RESILIENT,UTILITY.
What parts can replace 7439075-523?
There is 1 known substitute for 7439075-523: K375-2. Substitute compatibility should be verified for your specific system.
What is the NSN for 7439075-523?
7439075-523 is cataloged in the U.S. Government catalog under NSN 5340-00-546-5111. 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.