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DF-4428-4 — MOUNT,RESILIENT,UTILITY

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

DF-4428-4: MOUNT,RESILIENT,UTILITY.

The MOUNT,RESILIENT,UTILITY is a the manufacturer industrial component. Key specifications include height: 1.390 INCHES NOMINAL IN, stud_length: 3.490 INCHES NOMINAL ALL THREADED STUD IN, thread_size: 1-14 ALL THREADED PORTIONS, flange_width: 3.670 INCHES NOMINAL IN, flange_length: 10.750 INCHES NOMINAL IN, flange_thickness: 0.750 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-391-5023, 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
DF-4428-4
NSN: 5340-01-391-5023
FSC: 5340 — Hardware, Commercial
CAGE: 96867 — BUSHINGS INC (USA)
SPECIFICATIONS
height1.390 INCHES NOMINAL IN
stud_length3.490 INCHES NOMINAL ALL THREADED STUD IN
thread_size1-14 ALL THREADED PORTIONS
flange_width3.670 INCHES NOMINAL IN
flange_length10.750 INCHES NOMINAL IN
flange_thickness0.750 INCHES NOMINAL IN
style_designatorRECTANGULAR W/TWO THREADED STUDS TWO-HOLE FLANGE
end_item_identificationP/N 8VA71MPC 7082 7000 DIESEL ENGINE ONBOARD 49 FT BUSL CLASS COAST GUARD VESSELS FT
flange_mounting_hole_diameter0.540 INCHES NOMINAL IN
distance_between_mounting_hole_centers9.000 INCHES NOMINAL IN
NSN5340-01-391-5023
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: DF-4428-4 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: 0.540 INCHES NOMINAL IN
•
DISTANCE BETWEEN MOUNTING HOLE CENTERS: 9.000 INCHES NOMINAL IN
•
FLANGE THICKNESS: 0.750 INCHES NOMINAL IN
•
STYLE DESIGNATOR: RECTANGULAR W/TWO THREADED STUDS TWO-HOLE FLANGE
•
FLANGE LENGTH: 10.750 INCHES NOMINAL IN
•
STUD LENGTH: 3.490 INCHES NOMINAL ALL THREADED STUD IN
•
HEIGHT: 1.390 INCHES NOMINAL IN
•
THREAD SIZE: 1-14 ALL THREADED PORTIONS
TECHNICAL CHARACTERISTICS
FLANGE MOUNTING HOLE DIAMETER0.540 INCHES NOMINAL IN
DISTANCE BETWEEN MOUNTING HOLE CENTERS9.000 INCHES NOMINAL IN
FLANGE THICKNESS0.750 INCHES NOMINAL IN
STYLE DESIGNATORRECTANGULAR W/TWO THREADED STUDS TWO-HOLE FLANGE
FLANGE LENGTH10.750 INCHES NOMINAL IN
STUD LENGTH3.490 INCHES NOMINAL ALL THREADED STUD IN
HEIGHT1.390 INCHES NOMINAL IN
THREAD SIZE1-14 ALL THREADED PORTIONS
FLANGE WIDTH3.670 INCHES NOMINAL IN
END ITEM IDENTIFICATIONP/N 8VA71MPC 7082 7000 DIESEL ENGINE ONBOARD 49 FT BUSL CLASS COAST GUARD VESSELS FT
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 DF-4428-4?
DF-4428-4 is a MOUNT,RESILIENT,UTILITY.
What is the NSN for DF-4428-4?
DF-4428-4 is cataloged in the U.S. Government catalog under NSN 5340-01-391-5023. 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.