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5211638-1 — PLATE,MOUNTING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

5211638-1: PLATE,MOUNTING.

The PLATE,MOUNTING is a the manufacturer industrial component. Key specifications include shape: SPECIAL, width: 8.000 INCHES NOMINAL8.000 INCHES NOMINAL IN, length: 8.620 INCHES NOMINAL8.620 INCHES NOMINAL IN, material: ALUMINUM ALLOY 6061, thickness: 0.250 INCHES NOMINAL0.250 INCHES NOMINAL IN, special_features: GROOVES ON TOP 0.212 IN. MIN AND 0.218 IN.

MAXWD IN. This part is cataloged in the U.S. Government catalog under NSN 5340-01-310-1669, 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
5211638-1
NSN: 5340-01-310-1669
FSC: 5340 — Hardware, Commercial
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
shapeSPECIAL
width8.000 INCHES NOMINAL8.000 INCHES NOMINAL IN
length8.620 INCHES NOMINAL8.620 INCHES NOMINAL IN
materialALUMINUM ALLOY 6061
thickness0.250 INCHES NOMINAL0.250 INCHES NOMINAL IN
special_featuresGROOVES ON TOP 0.212 IN. MIN AND 0.218 IN. MAXWD IN
mounting_hole_typeUNTHREADED
mounting_hole_diameter0.271 INCHES MINIMUM AND 0.278 INCHES MAXIMUM ALL HOLES IN
mounting_hole_quantity2
material_document_and_classificationQQ-A-250/11 FED SPEC SINGLE MATERIAL RESPONSE
NSN5340-01-310-1669
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 5211638-1 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
•
LENGTH: 8.620 INCHES NOMINAL8.620 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-250/11 FED SPEC SINGLE MATERIAL RESPONSE
•
MOUNTING HOLE DIAMETER: 0.271 INCHES MINIMUM AND 0.278 INCHES MAXIMUM ALL HOLES IN
•
SHAPE: SPECIAL
•
WIDTH: 8.000 INCHES NOMINAL8.000 INCHES NOMINAL IN
•
MATERIAL: ALUMINUM ALLOY 6061
TECHNICAL CHARACTERISTICS
MOUNTING HOLE QUANTITY2
LENGTH8.620 INCHES NOMINAL8.620 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-250/11 FED SPEC SINGLE MATERIAL RESPONSE
MOUNTING HOLE DIAMETER0.271 INCHES MINIMUM AND 0.278 INCHES MAXIMUM ALL HOLES IN
SHAPESPECIAL
SPECIAL FEATURESGROOVES ON TOP 0.212 IN. MIN AND 0.218 IN. MAXWD IN
WIDTH8.000 INCHES NOMINAL8.000 INCHES NOMINAL IN
MATERIALALUMINUM ALLOY 6061
THICKNESS0.250 INCHES NOMINAL0.250 INCHES NOMINAL IN
MOUNTING HOLE TYPEUNTHREADED
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 5211638-1?
5211638-1 is a PLATE,MOUNTING.
What is the NSN for 5211638-1?
5211638-1 is cataloged in the U.S. Government catalog under NSN 5340-01-310-1669. 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.