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428457 — SEAT,HELICAL COMPRESSION SPRING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

428457: SEAT,HELICAL COMPRESSION SPRING.

SEAT,HELICAL COMPRESSION SPRING. Key specifications include design_type: SOLID, end_diameter: 8.0000 MILLIMETERS NOMINAL MM, overall_height: 21.5000 MILLIMETERS NOMINAL MM, first_step_diameter: 9.5000 MILLIMETERS NOMINAL MM, counterbore_diameter: 5.5000 MILLIMETERS NOMINAL MM, second_step_diameter: 14.0000 MILLIMETERS NOMINAL MM. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-116-3218, 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
428457
NSN: 5340-01-116-3218
FSC: 5340 — Hardware, Commercial
CAGE: 62983 — EATON AEROSPACE, LLC DBA JACKSON SOUTH (USA)
SPECIFICATIONS
design_typeSOLID
end_diameter8.0000 MILLIMETERS NOMINAL MM
overall_height21.5000 MILLIMETERS NOMINAL MM
first_step_diameter9.5000 MILLIMETERS NOMINAL MM
counterbore_diameter5.5000 MILLIMETERS NOMINAL MM
second_step_diameter14.0000 MILLIMETERS NOMINAL MM
distance_from_end_to_first_step19.0000 MILLIMETERS NOMINAL MM
NSN5340-01-116-3218
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 428457 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
•
FIRST STEP DIAMETER: 9.5000 MILLIMETERS NOMINAL MM
•
END DIAMETER: 8.0000 MILLIMETERS NOMINAL MM
•
DISTANCE FROM END TO FIRST STEP: 19.0000 MILLIMETERS NOMINAL MM
•
DESIGN TYPE: SOLID
•
SECOND STEP DIAMETER: 14.0000 MILLIMETERS NOMINAL MM
•
COUNTERBORE DIAMETER: 5.5000 MILLIMETERS NOMINAL MM
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT21.5000 MILLIMETERS NOMINAL MM
FIRST STEP DIAMETER9.5000 MILLIMETERS NOMINAL MM
END DIAMETER8.0000 MILLIMETERS NOMINAL MM
DISTANCE FROM END TO FIRST STEP19.0000 MILLIMETERS NOMINAL MM
DESIGN TYPESOLID
SECOND STEP DIAMETER14.0000 MILLIMETERS NOMINAL MM
COUNTERBORE DIAMETER5.5000 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 428457?
428457 is a SEAT,HELICAL COMPRESSION SPRING.
What is the NSN for 428457?
428457 is cataloged in the U.S. Government catalog under NSN 5340-01-116-3218. This indicates validated use in U.S. government and defense supply chains.
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