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5266298 — PLATE,MOUNTING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

5266298: PLATE,MOUNTING.

The PLATE,MOUNTING is a the manufacturer industrial component. Key specifications include shape: ROUND, material: ALUMINUM ALLOY 6061, thickness: 0.125 INCHES NOMINAL0.125 INCHES NOMINAL IN, outside_diameter: 2.000 INCHES NOMINAL2.000 INCHES NOMINAL IN, special_features: MOUNTING CONFIGURATION: 1.312 IN. C TO C IN, surface_treatment: CHROMATE.

This part is cataloged in the U.S. Government catalog under NSN 5340-01-400-2844, 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
5266298
NSN: 5340-01-400-2844
FSC: 5340 — Hardware, Commercial
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
shapeROUND
materialALUMINUM ALLOY 6061
thickness0.125 INCHES NOMINAL0.125 INCHES NOMINAL IN
outside_diameter2.000 INCHES NOMINAL2.000 INCHES NOMINAL IN
special_featuresMOUNTING CONFIGURATION: 1.312 IN. C TO C IN
surface_treatmentCHROMATE
mounting_hole_typeUNTHREADED
mounting_hole_diameter0.127 INCHES MINIMUM AND 0.133 INCHES MAXIMUM ALL HOLES IN
mounting_hole_quantity2
material_document_and_classificationQQ-A-225/8 FED SPEC SINGLE MATERIAL RESPONSE
surface_treatment_document_and_classificationMIL-C-5541, CL 1A MIL SPEC SINGLE TREATMENT RESPONSE A
NSN5340-01-400-2844
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 5266298 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: 2
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-C-5541, CL 1A MIL SPEC SINGLE TREATMENT RESPONSE A
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-225/8 FED SPEC SINGLE MATERIAL RESPONSE
•
MOUNTING HOLE DIAMETER: 0.127 INCHES MINIMUM AND 0.133 INCHES MAXIMUM ALL HOLES IN
•
SHAPE: ROUND
•
OUTSIDE DIAMETER: 2.000 INCHES NOMINAL2.000 INCHES NOMINAL IN
•
SURFACE TREATMENT: CHROMATE
TECHNICAL CHARACTERISTICS
MOUNTING HOLE QUANTITY2
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-5541, CL 1A MIL SPEC SINGLE TREATMENT RESPONSE A
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225/8 FED SPEC SINGLE MATERIAL RESPONSE
MOUNTING HOLE DIAMETER0.127 INCHES MINIMUM AND 0.133 INCHES MAXIMUM ALL HOLES IN
SHAPEROUND
OUTSIDE DIAMETER2.000 INCHES NOMINAL2.000 INCHES NOMINAL IN
SPECIAL FEATURESMOUNTING CONFIGURATION: 1.312 IN. C TO C IN
SURFACE TREATMENTCHROMATE
MATERIALALUMINUM ALLOY 6061
THICKNESS0.125 INCHES NOMINAL0.125 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
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 5266298?
5266298 is a PLATE,MOUNTING.
What is the NSN for 5266298?
5266298 is cataloged in the U.S. Government catalog under NSN 5340-01-400-2844. 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.