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1051020 — MOUNT,RESILIENT,UTILITY

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

1051020: MOUNT,RESILIENT,UTILITY.

The MOUNT,RESILIENT,UTILITY is a the manufacturer industrial component. Key specifications include height: 0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN, material: ALUMINUM PLATE, load_rating: 10.0 POUNDS MAXIMUM LBS, flange_width: 1.735 INCHES MINIMUM AND 1.765 INCHES MAXIMUM IN, flange_length: 1.735 INCHES MINIMUM AND 1.765 INCHES MAXIMUM IN, inside_diameter: 0.250 INCHES MINIMUM AND 0.256 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-476-0095, 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
1051020
NSN: 5340-01-476-0095
FSC: 5340 — Hardware, Commercial
CAGE: 09205 — LOCKHEED MARTIN CORP ELECTRONICS AND MISSILES DIV (USA)
SPECIFICATIONS
height0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN
materialALUMINUM PLATE
load_rating10.0 POUNDS MAXIMUM LBS
flange_width1.735 INCHES MINIMUM AND 1.765 INCHES MAXIMUM IN
flange_length1.735 INCHES MINIMUM AND 1.765 INCHES MAXIMUM IN
inside_diameter0.250 INCHES MINIMUM AND 0.256 INCHES MAXIMUM IN
flange_thickness0.058 INCHES MINIMUM AND 0.068 INCHES MAXIMUM IN
special_featuresAXIAL NAT. FREQ. FN (HZ) 37, DYNAMIC AXIAL SPRING RATE 1405 LBS/IN., DYNAMIC RADIAL SPRING RATE 1277 LBS/IN. LBS
style_designatorROUND SPRING COMPRESSION FOUR-HOLE FLANGE
flange_mounting_hole_diameter0.208 INCHES MINIMUM AND 0.213 INCHES MAXIMUM IN
distance_between_mounting_hole_centers1.370 INCHES MINIMUM AND 1.380 INCHES MAXIMUM IN
shortest_distance_between_mounting_hole_centers1.370 INCHES MINIMUM AND 1.380 INCHES MAXIMUM IN
NSN5340-01-476-0095
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 1051020 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
•
FLANGE MOUNTING HOLE DIAMETER: 0.208 INCHES MINIMUM AND 0.213 INCHES MAXIMUM IN
•
LOAD RATING: 10.0 POUNDS MAXIMUM LBS
•
DISTANCE BETWEEN MOUNTING HOLE CENTERS: 1.370 INCHES MINIMUM AND 1.380 INCHES MAXIMUM IN
•
FLANGE THICKNESS: 0.058 INCHES MINIMUM AND 0.068 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: ROUND SPRING COMPRESSION FOUR-HOLE FLANGE
•
FLANGE LENGTH: 1.735 INCHES MINIMUM AND 1.765 INCHES MAXIMUM IN
•
SHORTEST DISTANCE BETWEEN MOUNTING HOLE CENTERS: 1.370 INCHES MINIMUM AND 1.380 INCHES MAXIMUM IN
•
INSIDE DIAMETER: 0.250 INCHES MINIMUM AND 0.256 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
FLANGE MOUNTING HOLE DIAMETER0.208 INCHES MINIMUM AND 0.213 INCHES MAXIMUM IN
LOAD RATING10.0 POUNDS MAXIMUM LBS
DISTANCE BETWEEN MOUNTING HOLE CENTERS1.370 INCHES MINIMUM AND 1.380 INCHES MAXIMUM IN
FLANGE THICKNESS0.058 INCHES MINIMUM AND 0.068 INCHES MAXIMUM IN
STYLE DESIGNATORROUND SPRING COMPRESSION FOUR-HOLE FLANGE
FLANGE LENGTH1.735 INCHES MINIMUM AND 1.765 INCHES MAXIMUM IN
SHORTEST DISTANCE BETWEEN MOUNTING HOLE CENTERS1.370 INCHES MINIMUM AND 1.380 INCHES MAXIMUM IN
INSIDE DIAMETER0.250 INCHES MINIMUM AND 0.256 INCHES MAXIMUM IN
HEIGHT0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN
SPECIAL FEATURESAXIAL NAT. FREQ. FN (HZ) 37, DYNAMIC AXIAL SPRING RATE 1405 LBS/IN., DYNAMIC RADIAL SPRING RATE 1277 LBS/IN. LBS
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: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1051020?
1051020 is a MOUNT,RESILIENT,UTILITY.
What is the NSN for 1051020?
1051020 is cataloged in the U.S. Government catalog under NSN 5340-01-476-0095. 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.