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500-1021-03 — PLATE,MOUNTING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

500-1021-03: PLATE,MOUNTING.

The PLATE,MOUNTING is a the manufacturer industrial component. Key specifications include shape: RECTANGULAR W/ROUNDED CORNERS, width: 10.25 INCHES NOMINAL IN, length: 20.0 INCHES NOMINAL IN, material: ALUMINUM ALLOY 6061, thickness: 0.95 INCHES NOMINAL IN, document_type: ENGINEERING DRAWING. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-675-4430, 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
500-1021-03
NSN: 5340-01-675-4430
FSC: 5340 — Hardware, Commercial
CAGE: 68RH1 — UNIVERSAL SONAR MOUNT (USA)
SPECIFICATIONS
shapeRECTANGULAR W/ROUNDED CORNERS
width10.25 INCHES NOMINAL IN
length20.0 INCHES NOMINAL IN
materialALUMINUM ALLOY 6061
thickness0.95 INCHES NOMINAL IN
document_typeENGINEERING DRAWING
mounting_methodSCREW
surface_treatmentANODIZE
mounting_hole_typeCOUNTERSUNK
mounting_hole_quantity35
part_name_assigned_by_controlling_agencyUSM, 20 X 11 FIXED PLATE W/ HINGE
next_higher_assembly_identification_designatorUSM EXPEDITION MOUNT
NSN5340-01-675-4430
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 500-1021-03 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: 35
•
DOCUMENT TYPE: ENGINEERING DRAWING
•
LENGTH: 20.0 INCHES NOMINAL IN
•
MOUNTING METHOD: SCREW
•
SHAPE: RECTANGULAR W/ROUNDED CORNERS
•
NEXT HIGHER ASSEMBLY IDENTIFICATION DESIGNATOR: USM EXPEDITION MOUNT
•
COLOR: BLACK
•
SURFACE TREATMENT: ANODIZE
TECHNICAL CHARACTERISTICS
MOUNTING HOLE QUANTITY35
DOCUMENT TYPEENGINEERING DRAWING
LENGTH20.0 INCHES NOMINAL IN
MOUNTING METHODSCREW
SHAPERECTANGULAR W/ROUNDED CORNERS
NEXT HIGHER ASSEMBLY IDENTIFICATION DESIGNATORUSM EXPEDITION MOUNT
COLORBLACK
SURFACE TREATMENTANODIZE
WIDTH10.25 INCHES NOMINAL IN
PART NAME ASSIGNED BY CONTROLLING AGENCYUSM, 20 X 11 FIXED PLATE W/ HINGE
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
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 500-1021-03?
500-1021-03 is a PLATE,MOUNTING.
What is the NSN for 500-1021-03?
500-1021-03 is cataloged in the U.S. Government catalog under NSN 5340-01-675-4430. 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.