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561-6404325-70 — PLATE,MOUNTING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

561-6404325-70: PLATE,MOUNTING.

The PLATE,MOUNTING is a the manufacturer industrial component. Key specifications include shape: RECTANGULAR, width: 4.990 INCHES MINIMUM AND 4.990 INCHES MINIMUM AND 4.992 INCHES MAXIMUM4.992 INCHES MAXIMUM IN, length: 5.660 INCHES NOMINAL5.660 INCHES NOMINAL IN, material: ALUMINUM ALLOY, thickness: 1.500 INCHES NOMINAL1.500 INCHES NOMINAL IN, aperture_shape: ROUND. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-422-4489, 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
561-6404325-70
NSN: 5340-01-422-4489
FSC: 5340 — Hardware, Commercial
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
shapeRECTANGULAR
width4.990 INCHES MINIMUM AND 4.990 INCHES MINIMUM AND 4.992 INCHES MAXIMUM4.992 INCHES MAXIMUM IN
length5.660 INCHES NOMINAL5.660 INCHES NOMINAL IN
materialALUMINUM ALLOY
thickness1.500 INCHES NOMINAL1.500 INCHES NOMINAL IN
aperture_shapeROUND
aperture_diameter1.380 INCHES NOMINAL IN
features_providedAPERTURE
mounting_hole_typeUNTHREADED
mounting_hole_diameter0.281 INCHES NOMINAL ALL HOLES IN
mounting_hole_quantity4
material_document_and_classificationASTM-B209 ASSN STD SINGLE MATERIAL RESPONSE
NSN5340-01-422-4489
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 561-6404325-70 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
•
MOUNTING HOLE QUANTITY: 4
•
LENGTH: 5.660 INCHES NOMINAL5.660 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM-B209 ASSN STD SINGLE MATERIAL RESPONSE
•
MOUNTING HOLE DIAMETER: 0.281 INCHES NOMINAL ALL HOLES IN
•
SHAPE: RECTANGULAR
•
APERTURE DIAMETER: 1.380 INCHES NOMINAL IN
•
FEATURES PROVIDED: APERTURE
•
WIDTH: 4.990 INCHES MINIMUM AND 4.990 INCHES MINIMUM AND 4.992 INCHES MAXIMUM4.992 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
MOUNTING HOLE QUANTITY4
LENGTH5.660 INCHES NOMINAL5.660 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONASTM-B209 ASSN STD SINGLE MATERIAL RESPONSE
MOUNTING HOLE DIAMETER0.281 INCHES NOMINAL ALL HOLES IN
SHAPERECTANGULAR
APERTURE DIAMETER1.380 INCHES NOMINAL IN
FEATURES PROVIDEDAPERTURE
WIDTH4.990 INCHES MINIMUM AND 4.990 INCHES MINIMUM AND 4.992 INCHES MAXIMUM4.992 INCHES MAXIMUM IN
MATERIALALUMINUM ALLOY
THICKNESS1.500 INCHES NOMINAL1.500 INCHES NOMINAL IN
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
DF2018-470-70Same 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 561-6404325-70?
561-6404325-70 is a PLATE,MOUNTING.
What parts can replace 561-6404325-70?
There is 1 known substitute for 561-6404325-70: DF2018-470-70. Substitute compatibility should be verified for your specific system.
What is the NSN for 561-6404325-70?
561-6404325-70 is cataloged in the U.S. Government catalog under NSN 5340-01-422-4489. 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.