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4121351 — PLATE,MOUNTING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

4121351: PLATE,MOUNTING.

The PLATE,MOUNTING is a the manufacturer industrial component. Key specifications include shape: RECTANGULAR W/ROUNDED CORNERS, width: 15.0 MILLIMETERS NOMINAL MM, length: 21.0 MILLIMETERS NOMINAL MM, material: ALUMINUM, thickness: 0.5 MILLIMETERS NOMINAL MM, end_item_identification: 5340-01-652-5208. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-702-8310, 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
4121351
NSN: 5340-01-702-8310
FSC: 5340 — Hardware, Commercial
CAGE: 75Q65 — OSHKOSH DEFENSE LLC (USA)
SPECIFICATIONS
shapeRECTANGULAR W/ROUNDED CORNERS
width15.0 MILLIMETERS NOMINAL MM
length21.0 MILLIMETERS NOMINAL MM
materialALUMINUM
thickness0.5 MILLIMETERS NOMINAL MM
end_item_identification5340-01-652-5208
part_name_assigned_by_controlling_agencyLABEL, INFO.
NSN5340-01-702-8310
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 4121351 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: 21.0 MILLIMETERS NOMINAL MM
•
SHAPE: RECTANGULAR W/ROUNDED CORNERS
•
WIDTH: 15.0 MILLIMETERS NOMINAL MM
•
MATERIAL: ALUMINUM
•
THICKNESS: 0.5 MILLIMETERS NOMINAL MM
TECHNICAL CHARACTERISTICS
LENGTH21.0 MILLIMETERS NOMINAL MM
SHAPERECTANGULAR W/ROUNDED CORNERS
WIDTH15.0 MILLIMETERS NOMINAL MM
PART NAME ASSIGNED BY CONTROLLING AGENCYLABEL, INFO.
END ITEM IDENTIFICATION5340-01-652-5208
MATERIALALUMINUM
THICKNESS0.5 MILLIMETERS NOMINAL MM
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 4121351?
4121351 is a PLATE,MOUNTING.
What is the NSN for 4121351?
4121351 is cataloged in the U.S. Government catalog under NSN 5340-01-702-8310. 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.