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7286781 — PLATE,MOUNTING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

7286781: PLATE,MOUNTING.

The PLATE,MOUNTING is a the manufacturer industrial component. Key specifications include shape: ROUND, material: NICKEL ALLOY AND ALUMINUM ALLOY, thickness: 0.440 INCHES NOMINAL0.440 INCHES NOMINAL IN, aperture_type: COUNTERBORED, aperture_shape: ROUND, outside_diameter: 3.996 INCHES NOMINAL3.996 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-505-0640, 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
7286781
NSN: 5340-01-505-0640
FSC: 5340 — Hardware, Commercial
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
shapeROUND
materialNICKEL ALLOY AND ALUMINUM ALLOY
thickness0.440 INCHES NOMINAL0.440 INCHES NOMINAL IN
aperture_typeCOUNTERBORED
aperture_shapeROUND
outside_diameter3.996 INCHES NOMINAL3.996 INCHES NOMINAL IN
special_featuresMOUNTING CONFIGURATION: EQUALLY SPACED ON A 3.125 IN DIA BOLT CIRCLE IN
aperture_diameter0.500 INCHES NOMINAL IN
counterbore_depth0.123 INCHES NOMINAL0.123 INCHES NOMINAL IN
features_providedRAISED SURFACE AND APERTURE
mounting_hole_typeUNTHREADED
counterbore_diameter0.880 INCHES MINIMUM AND 0.880 INCHES MINIMUM AND 0.883 INCHES MAXIMUM0.883 INCHES MAXIMUM IN
NSN5340-01-505-0640
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 7286781 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
•
APERTURE TYPE: COUNTERBORED
•
RAISED SURFACE HEIGHT: 0.437 INCHES NOMINAL IN
•
MOUNTING HOLE DIAMETER: 0.406 INCHES NOMINAL ALL HOLES IN
•
SHAPE: ROUND
•
OUTSIDE DIAMETER: 3.996 INCHES NOMINAL3.996 INCHES NOMINAL IN
•
APERTURE DIAMETER: 0.500 INCHES NOMINAL IN
•
COUNTERBORE DEPTH: 0.123 INCHES NOMINAL0.123 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
MOUNTING HOLE QUANTITY4
APERTURE TYPECOUNTERBORED
RAISED SURFACE HEIGHT0.437 INCHES NOMINAL IN
MOUNTING HOLE DIAMETER0.406 INCHES NOMINAL ALL HOLES IN
SHAPEROUND
OUTSIDE DIAMETER3.996 INCHES NOMINAL3.996 INCHES NOMINAL IN
APERTURE DIAMETER0.500 INCHES NOMINAL IN
COUNTERBORE DEPTH0.123 INCHES NOMINAL0.123 INCHES NOMINAL IN
FEATURES PROVIDEDRAISED SURFACE AND APERTURE
COUNTERBORE DIAMETER0.880 INCHES MINIMUM AND 0.880 INCHES MINIMUM AND 0.883 INCHES MAXIMUM0.883 INCHES MAXIMUM 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
H684-1505-17Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 7286781?
7286781 is a PLATE,MOUNTING.
What parts can replace 7286781?
There is 1 known substitute for 7286781: H684-1505-17. Substitute compatibility should be verified for your specific system.
What is the NSN for 7286781?
7286781 is cataloged in the U.S. Government catalog under NSN 5340-01-505-0640. 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.