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6579587 — PLATE,MOUNTING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

6579587: PLATE,MOUNTING.

The PLATE,MOUNTING is a the manufacturer industrial component. Key specifications include shape: SPECIAL, width: 4.000 INCHES NOMINAL4.000 INCHES NOMINAL IN, length: 10.000 INCHES NOMINAL10.000 INCHES NOMINAL IN, material: ALUMINUM ALLOY 6061, thickness: 0.500 INCHES NOMINAL0.500 INCHES NOMINAL IN, thread_size: 0.250-20. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-347-4284, 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
6579587
NSN: 5340-01-347-4284
FSC: 5340 — Hardware, Commercial
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
shapeSPECIAL
width4.000 INCHES NOMINAL4.000 INCHES NOMINAL IN
length10.000 INCHES NOMINAL10.000 INCHES NOMINAL IN
materialALUMINUM ALLOY 6061
thickness0.500 INCHES NOMINAL0.500 INCHES NOMINAL IN
thread_size0.250-20
surface_treatmentANODIZE
mounting_hole_typeTHREADED OR UNTHREADED
mounting_hole_diameter0.261 INCHES MINIMUM AND 0.267 INCHES MAXIMUM FIRST HOLE IN
mounting_hole_quantity1 AND 2 AND 3
screw_thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
material_document_and_classificationQQ-A-250/11 FED SPEC SINGLE MATERIAL RESPONSE
NSN5340-01-347-4284
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 6579587 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: 1 AND 2 AND 3
•
LENGTH: 10.000 INCHES NOMINAL10.000 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-250/11 FED SPEC SINGLE MATERIAL RESPONSE
•
MOUNTING HOLE DIAMETER: 0.198 INCHES MINIMUM AND 0.204 INCHES MAXIMUM ALL HOLES IN
•
SHAPE: SPECIAL
•
THREAD SIZE: 0.250-20
TECHNICAL CHARACTERISTICS
MOUNTING HOLE QUANTITY1 AND 2 AND 3
LENGTH10.000 INCHES NOMINAL10.000 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-250/11 FED SPEC SINGLE MATERIAL RESPONSE
MOUNTING HOLE DIAMETER0.198 INCHES MINIMUM AND 0.204 INCHES MAXIMUM ALL HOLES IN
MOUNTING HOLE DIAMETER0.261 INCHES MINIMUM AND 0.267 INCHES MAXIMUM FIRST HOLE IN
MOUNTING HOLE DIAMETER0.308 INCHES MINIMUM AND 0.318 INCHES MAXIMUM SECOND HOLE IN
SHAPESPECIAL
THREAD SIZE0.250-20
SCREW THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
SURFACE TREATMENTANODIZE
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
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 6579587?
6579587 is a PLATE,MOUNTING.
What is the NSN for 6579587?
6579587 is cataloged in the U.S. Government catalog under NSN 5340-01-347-4284. 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.