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5540G9060 — SEAT,HELICAL COMPRESSION SPRING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

5540G9060: SEAT,HELICAL COMPRESSION SPRING.

SEAT,HELICAL COMPRESSION SPRING. Key specifications include material: STEEL, design_type: SOLID, end_diameter: 0.7500 INCHES NOMINAL IN, bore_diameter: 0.5000 INCHES NOMINAL IN, overall_height: 0.7190 INCHES NOMINAL IN, style_designator: SEAT. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-217-8734, 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
5540G9060
NSN: 5340-00-217-8734
FSC: 5340 — Hardware, Commercial
CAGE: 83299 — HYSTER-YALE GROUP, INC. DBA YALE MATERIALS HANDLING (USA)
SPECIFICATIONS
materialSTEEL
design_typeSOLID
end_diameter0.7500 INCHES NOMINAL IN
bore_diameter0.5000 INCHES NOMINAL IN
overall_height0.7190 INCHES NOMINAL IN
style_designatorSEAT
features_providedCASEHARDENED
first_step_diameter1.1250 INCHES NOMINAL IN
countersink_diameter0.3750 INCHES NOMINAL IN
distance_from_end_to_first_step0.5310 INCHES NOMINAL IN
NSN5340-00-217-8734
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 5540G9060 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: 1.1250 INCHES NOMINAL IN
•
END DIAMETER: 0.7500 INCHES NOMINAL IN
•
COUNTERSINK DIAMETER: 0.3750 INCHES NOMINAL IN
•
DISTANCE FROM END TO FIRST STEP: 0.5310 INCHES NOMINAL IN
•
DESIGN TYPE: SOLID
•
STYLE DESIGNATOR: SEAT
•
FEATURES PROVIDED: CASEHARDENED
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.7190 INCHES NOMINAL IN
FIRST STEP DIAMETER1.1250 INCHES NOMINAL IN
END DIAMETER0.7500 INCHES NOMINAL IN
COUNTERSINK DIAMETER0.3750 INCHES NOMINAL IN
DISTANCE FROM END TO FIRST STEP0.5310 INCHES NOMINAL IN
DESIGN TYPESOLID
STYLE DESIGNATORSEAT
FEATURES PROVIDEDCASEHARDENED
BORE DIAMETER0.5000 INCHES NOMINAL IN
MATERIALSTEEL
SUBSTITUTES & CROSS-REFERENCES 2
865509Reference document
Same NSN cross-reference
Reference document — Secondary reference
16448516423Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 5540G9060?
5540G9060 is a SEAT,HELICAL COMPRESSION SPRING.
What parts can replace 5540G9060?
There are 2 known substitutes for 5540G9060: 865509, 16448516423. Substitute compatibility should be verified for your specific system.
What is the NSN for 5540G9060?
5540G9060 is cataloged in the U.S. Government catalog under NSN 5340-00-217-8734. 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.