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040427 — SEAT,HELICAL COMPRESSION SPRING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

040427: SEAT,HELICAL COMPRESSION SPRING.

SEAT,HELICAL COMPRESSION SPRING. Key specifications include part_name_assigned_by_controlling_agency: BED CRITICAL CARE. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-364-3479, 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
040427
NSN: 5340-00-364-3479
NIINs: 003643479, 015195649
FSC: 5340 — Hardware, Commercial
CAGE: 31361 — WOODWARD, INC. (USA)
SPECIFICATIONS
part_name_assigned_by_controlling_agencyBED CRITICAL CARE
NSN5340-00-364-3479
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 040427 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
•
END DIAMETER: 0.7520 INCHES MINIMUM AND 0.7540 INCHES MAXIMUM IN
•
DESIGN TYPE: SOLID
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STYLE DESIGNATOR: SEAT
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COUNTERBORE LENGTH: 0.1510 INCHES NOMINAL IN
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COUNTERBORE DIAMETER: 0.6790 INCHES NOMINAL IN
•
BORE DIAMETER: 0.3750 INCHES NOMINAL IN
•
MATERIAL: STEEL
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.1880 INCHES NOMINAL IN
END DIAMETER0.7520 INCHES MINIMUM AND 0.7540 INCHES MAXIMUM IN
DESIGN TYPESOLID
STYLE DESIGNATORSEAT
COUNTERBORE LENGTH0.1510 INCHES NOMINAL IN
COUNTERBORE DIAMETER0.6790 INCHES NOMINAL IN
BORE DIAMETER0.3750 INCHES NOMINAL IN
MATERIALSTEEL
SUBSTITUTES & CROSS-REFERENCES 1
3249144Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 040427?
040427 is a SEAT,HELICAL COMPRESSION SPRING.
What parts can replace 040427?
There is 1 known substitute for 040427: 3249144. Substitute compatibility should be verified for your specific system.
What is the NSN for 040427?
040427 is cataloged in the U.S. Government catalog under NSN 5340-00-364-3479. 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.