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751790-1-1 — SEAT,HELICAL COMPRESSION SPRING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

751790-1-1: SEAT,HELICAL COMPRESSION SPRING.

SEAT,HELICAL COMPRESSION SPRING. Key specifications include end_diameter: 0.3480 INCHES MINIMUM AND 0.3520 INCHES MAXIMUM IN, overall_height: 0.5650 INCHES MINIMUM AND 0.5750 INCHES MAXIMUM IN, style_designator: SEAT, first_step_length: 0.2100 INCHES NOMINAL IN, first_step_diameter: 0.6000 INCHES NOMINAL IN, second_end_diameter: 0.3200 INCHES MINIMUM AND 0.3220 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-214-2606, 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
751790-1-1
NSN: 5340-01-214-2606
FSC: 5340 — Hardware, Commercial
CAGE: 73030 — HAMILTON SUNDSTRAND CORPORATION DBA COLLINS AEROSPACE (USA)
SPECIFICATIONS
end_diameter0.3480 INCHES MINIMUM AND 0.3520 INCHES MAXIMUM IN
overall_height0.5650 INCHES MINIMUM AND 0.5750 INCHES MAXIMUM IN
style_designatorSEAT
first_step_length0.2100 INCHES NOMINAL IN
first_step_diameter0.6000 INCHES NOMINAL IN
second_end_diameter0.3200 INCHES MINIMUM AND 0.3220 INCHES MAXIMUM IN
fsc_application_dataCONTROL,PRESSURE 1660011433511
distance_from_end_to_first_step0.0650 INCHES MINIMUM AND 0.0750 INCHES MAXIMUM IN
NSN5340-01-214-2606
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 751790-1-1 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: CONTROL,PRESSURE 1660011433511
•
FIRST STEP DIAMETER: 0.6000 INCHES NOMINAL IN
•
END DIAMETER: 0.3480 INCHES MINIMUM AND 0.3520 INCHES MAXIMUM IN
•
SECOND END DIAMETER: 0.3200 INCHES MINIMUM AND 0.3220 INCHES MAXIMUM IN
•
DISTANCE FROM END TO FIRST STEP: 0.0650 INCHES MINIMUM AND 0.0750 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: SEAT
•
FIRST STEP LENGTH: 0.2100 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.5650 INCHES MINIMUM AND 0.5750 INCHES MAXIMUM IN
FSC APPLICATION DATACONTROL,PRESSURE 1660011433511
FIRST STEP DIAMETER0.6000 INCHES NOMINAL IN
END DIAMETER0.3480 INCHES MINIMUM AND 0.3520 INCHES MAXIMUM IN
SECOND END DIAMETER0.3200 INCHES MINIMUM AND 0.3220 INCHES MAXIMUM IN
DISTANCE FROM END TO FIRST STEP0.0650 INCHES MINIMUM AND 0.0750 INCHES MAXIMUM IN
STYLE DESIGNATORSEAT
FIRST STEP LENGTH0.2100 INCHES NOMINAL IN
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 751790-1-1?
751790-1-1 is a SEAT,HELICAL COMPRESSION SPRING.
What is the NSN for 751790-1-1?
751790-1-1 is cataloged in the U.S. Government catalog under NSN 5340-01-214-2606. 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.