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719090-1 — SEAT,HELICAL COMPRESSION SPRING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

719090-1: SEAT,HELICAL COMPRESSION SPRING.

SEAT,HELICAL COMPRESSION SPRING. Key specifications include material: STEEL COMP 410, fsc_application_data: FUEL CONTROL,ENGINE,ACFT, material_hardness_rating: 75.0 ROCKWELL SUPERFICIAL 15-N MINIMUM AND 79.5 ROCKWELL SUPERFICIAL 15-N MAXIMUM, material_document_and_classification: AMS 5612 ASSN STD SINGLE MATERIAL RESPONSE. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-786-3243, 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
719090-1
NSN: 5340-00-786-3243
FSC: 5340 — Hardware, Commercial
CAGE: 45934 — ONTIC ENGINEERING & MANUFACTURING, INC DBA ONTIC US (USA)
SPECIFICATIONS
materialSTEEL COMP 410
fsc_application_dataFUEL CONTROL,ENGINE,ACFT
material_hardness_rating75.0 ROCKWELL SUPERFICIAL 15-N MINIMUM AND 79.5 ROCKWELL SUPERFICIAL 15-N MAXIMUM
material_document_and_classificationAMS 5612 ASSN STD SINGLE MATERIAL RESPONSE
NSN5340-00-786-3243
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 719090-1 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
•
FSC APPLICATION DATA: FUEL CONTROL,ENGINE,ACFT
•
MATERIAL HARDNESS RATING: 75.0 ROCKWELL SUPERFICIAL 15-N MINIMUM AND 79.5 ROCKWELL SUPERFICIAL 15-N MAXIMUM
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5612 ASSN STD SINGLE MATERIAL RESPONSE
•
MATERIAL: STEEL COMP 410
TECHNICAL CHARACTERISTICS
FSC APPLICATION DATAFUEL CONTROL,ENGINE,ACFT
MATERIAL HARDNESS RATING75.0 ROCKWELL SUPERFICIAL 15-N MINIMUM AND 79.5 ROCKWELL SUPERFICIAL 15-N MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5612 ASSN STD SINGLE MATERIAL RESPONSE
MATERIALSTEEL COMP 410
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)Demilitarization required — critical (Q)
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FREQUENTLY ASKED QUESTIONS
What is 719090-1?
719090-1 is a SEAT,HELICAL COMPRESSION SPRING.
What is the NSN for 719090-1?
719090-1 is cataloged in the U.S. Government catalog under NSN 5340-00-786-3243. 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.