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6590-20-122-8042 — PLATE,MOUNTING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

6590-20-122-8042: PLATE,MOUNTING.

The PLATE,MOUNTING is a the manufacturer industrial component. Key specifications include shape: RECTANGULAR, width: 5.6100 INCHES MINIMUM AND 5.6200 INCHES MAXIMUM IN, length: 6.7500 INCHES NOMINAL IN, material: ALUMINUM ALLOY 6061, thickness: 0.0630 INCHES NOMINAL IN, surface_treatment: CHROMATE. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-397-3428, 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
6590-20-122-8042
NSN: 5340-01-397-3428
FSC: 5340 — Hardware, Commercial
CAGE: 78286 — SIKORSKY AIRCRAFT CORPORATION DBA SIKORSKY AIRCRAFT CORP (USA)
SPECIFICATIONS
shapeRECTANGULAR
width5.6100 INCHES MINIMUM AND 5.6200 INCHES MAXIMUM IN
length6.7500 INCHES NOMINAL IN
materialALUMINUM ALLOY 6061
thickness0.0630 INCHES NOMINAL IN
surface_treatmentCHROMATE
material_document_and_classificationQQ-A-250/11 FED SPEC SINGLE MATERIAL RESPONSE
surface_treatment_document_and_classificationMIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE
NSN5340-01-397-3428
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 6590-20-122-8042 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: 6.7500 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-250/11 FED SPEC SINGLE MATERIAL RESPONSE
•
SHAPE: RECTANGULAR
•
SURFACE TREATMENT: CHROMATE
•
WIDTH: 5.6100 INCHES MINIMUM AND 5.6200 INCHES MAXIMUM IN
•
MATERIAL: ALUMINUM ALLOY 6061
•
THICKNESS: 0.0630 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
LENGTH6.7500 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-250/11 FED SPEC SINGLE MATERIAL RESPONSE
SHAPERECTANGULAR
SURFACE TREATMENTCHROMATE
WIDTH5.6100 INCHES MINIMUM AND 5.6200 INCHES MAXIMUM IN
MATERIALALUMINUM ALLOY 6061
THICKNESS0.0630 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
71680009413379Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 6590-20-122-8042?
6590-20-122-8042 is a PLATE,MOUNTING.
What parts can replace 6590-20-122-8042?
There is 1 known substitute for 6590-20-122-8042: 71680009413379. Substitute compatibility should be verified for your specific system.
What is the NSN for 6590-20-122-8042?
6590-20-122-8042 is cataloged in the U.S. Government catalog under NSN 5340-01-397-3428. 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.