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12490053 — PLATE,MOUNTING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

12490053: PLATE,MOUNTING.

The PLATE,MOUNTING is a the manufacturer industrial component. Key specifications include shape: IRREGULAR, width: 2.000 INCHES NOMINAL IN, length: 9.250 INCHES NOMINAL IN, material: STEEL, thickness: 0.750 INCHES NOMINAL IN, mounting_hole_type: UNTHREADED. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-554-9183, 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
12490053
NSN: 5340-01-554-9183
FSC: 5340 — Hardware, Commercial
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
shapeIRREGULAR
width2.000 INCHES NOMINAL IN
length9.250 INCHES NOMINAL IN
materialSTEEL
thickness0.750 INCHES NOMINAL IN
mounting_hole_typeUNTHREADED
end_item_identificationM1A2
material_document_and_classificationMIL-A-12560 MIL SPEC SINGLE MATERIAL RESPONSE
part_name_assigned_by_controlling_agencyGUARD
NSN5340-01-554-9183
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 12490053 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: 9.250 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-A-12560 MIL SPEC SINGLE MATERIAL RESPONSE
•
SHAPE: IRREGULAR
•
WIDTH: 2.000 INCHES NOMINAL IN
•
MATERIAL: STEEL
•
THICKNESS: 0.750 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
LENGTH9.250 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-A-12560 MIL SPEC SINGLE MATERIAL RESPONSE
SHAPEIRREGULAR
WIDTH2.000 INCHES NOMINAL IN
PART NAME ASSIGNED BY CONTROLLING AGENCYGUARD
END ITEM IDENTIFICATIONM1A2
MATERIALSTEEL
THICKNESS0.750 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 12490053?
12490053 is a PLATE,MOUNTING.
What is the NSN for 12490053?
12490053 is cataloged in the U.S. Government catalog under NSN 5340-01-554-9183. 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.