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ACO44054 — SEAT,HELICAL COMPRESSION SPRING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

ACO44054: SEAT,HELICAL COMPRESSION SPRING.

SEAT,HELICAL COMPRESSION SPRING. Key specifications include material: STEEL CORROSION RESISTING, design_type: SOLID, end_diameter: 0.3070 INCHES MINIMUM AND 0.3150 INCHES MAXIMUM IN, overall_height: 0.8460 INCHES NOMINAL IN, special_features: NOT CASEHARDENED, style_designator: SEAT. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-172-9499, 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
ACO44054
NSN: 5340-01-172-9499
FSC: 5340 — Hardware, Commercial
CAGE: K1037 — MEGGITT AEROSPACE LIMITED (GBR)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
design_typeSOLID
end_diameter0.3070 INCHES MINIMUM AND 0.3150 INCHES MAXIMUM IN
overall_height0.8460 INCHES NOMINAL IN
special_featuresNOT CASEHARDENED
style_designatorSEAT
first_step_diameter0.5850 INCHES MINIMUM AND 0.5880 INCHES MAXIMUM IN
counterbore_diameter0.4700 INCHES NOMINAL IN
countersink_angle_in_deg90.0
distance_from_end_to_first_step0.7320 INCHES NOMINAL IN
NSN5340-01-172-9499
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: ACO44054 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
•
COUNTERSINK ANGLE IN DEG: 90.0
•
FIRST STEP DIAMETER: 0.5850 INCHES MINIMUM AND 0.5880 INCHES MAXIMUM IN
•
END DIAMETER: 0.3070 INCHES MINIMUM AND 0.3150 INCHES MAXIMUM IN
•
DISTANCE FROM END TO FIRST STEP: 0.7320 INCHES NOMINAL IN
•
DESIGN TYPE: SOLID
•
STYLE DESIGNATOR: SEAT
•
COUNTERBORE DIAMETER: 0.4700 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.8460 INCHES NOMINAL IN
COUNTERSINK ANGLE IN DEG90.0
FIRST STEP DIAMETER0.5850 INCHES MINIMUM AND 0.5880 INCHES MAXIMUM IN
END DIAMETER0.3070 INCHES MINIMUM AND 0.3150 INCHES MAXIMUM IN
DISTANCE FROM END TO FIRST STEP0.7320 INCHES NOMINAL IN
DESIGN TYPESOLID
STYLE DESIGNATORSEAT
COUNTERBORE DIAMETER0.4700 INCHES NOMINAL IN
SPECIAL FEATURESNOT CASEHARDENED
MATERIALSTEEL CORROSION RESISTING
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 ACO44054?
ACO44054 is a SEAT,HELICAL COMPRESSION SPRING.
What is the NSN for ACO44054?
ACO44054 is cataloged in the U.S. Government catalog under NSN 5340-01-172-9499. 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.