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6990408 — PLATE,MOUNTING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

6990408: PLATE,MOUNTING.

The PLATE,MOUNTING is a the manufacturer industrial component. Key specifications include shape: SQUARE, width: 30.000 INCHES NOMINAL IN, length: 30.000 INCHES NOMINAL IN, material: ALUMINUM ALLOY, thickness: 0.500 INCHES NOMINAL IN, special_features: MOUNTING CONFIGURATION: 1 HOLE EACH CORNER (0.409 IN. DIAMETER) 2 INCHES FROM EACH SIDE IN.

This part is cataloged in the U.S. Government catalog under NSN 5340-01-566-3734, 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
6990408
NSN: 5340-01-566-3734
FSC: 5340 — Hardware, Commercial
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
shapeSQUARE
width30.000 INCHES NOMINAL IN
length30.000 INCHES NOMINAL IN
materialALUMINUM ALLOY
thickness0.500 INCHES NOMINAL IN
special_featuresMOUNTING CONFIGURATION: 1 HOLE EACH CORNER (0.409 IN. DIAMETER) 2 INCHES FROM EACH SIDE IN
end_item_identificationTMD WRAPPING STAND ASSEMBLY
NSN5340-01-566-3734
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 6990408 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
•
LENGTH: 30.000 INCHES NOMINAL IN
•
SHAPE: SQUARE
•
WIDTH: 30.000 INCHES NOMINAL IN
•
MATERIAL: ALUMINUM ALLOY
•
THICKNESS: 0.500 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
LENGTH30.000 INCHES NOMINAL IN
SHAPESQUARE
SPECIAL FEATURESMOUNTING CONFIGURATION: 1 HOLE EACH CORNER (0.409 IN. DIAMETER) 2 INCHES FROM EACH SIDE IN
WIDTH30.000 INCHES NOMINAL IN
END ITEM IDENTIFICATIONTMD WRAPPING STAND ASSEMBLY
MATERIALALUMINUM ALLOY
THICKNESS0.500 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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Demilitarization required — mutilation
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FREQUENTLY ASKED QUESTIONS
What is 6990408?
6990408 is a PLATE,MOUNTING.
What is the NSN for 6990408?
6990408 is cataloged in the U.S. Government catalog under NSN 5340-01-566-3734. 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.