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ACO44059 — RETAINER,HELICAL COMPRESSION SPR

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

ACO44059: RETAINER,HELICAL COMPRESSION SPR.

RETAINER,HELICAL COMPRESSION SPR. Key specifications include material: STEEL CORROSION RESISTING, overall_height: 0.590 INCHES NOMINAL IN, flange_diameter: 1.220 INCHES NOMINAL IN, flange_thickness: 0.531 INCHES NOMINAL IN, style_designator: PARALLEL, body_inside_diameter: 0.862 INCHES MINIMUM AND 0.866 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-172-9484, 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
ACO44059
NSN: 5340-01-172-9484
FSC: 5340 — Hardware, Commercial
CAGE: K1037 — MEGGITT AEROSPACE LIMITED (GBR)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
overall_height0.590 INCHES NOMINAL IN
flange_diameter1.220 INCHES NOMINAL IN
flange_thickness0.531 INCHES NOMINAL IN
style_designatorPARALLEL
body_inside_diameter0.862 INCHES MINIMUM AND 0.866 INCHES MAXIMUM IN
fsc_application_dataVALVE,BRAKE CONTROL
body_outside_diameter0.922 INCHES MINIMUM AND 0.925 INCHES MAXIMUM IN
casehardening_indicatorNOT CASEHARDENED
outside_chamfer_angle_in_deg90.0
NSN5340-01-172-9484
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: ACO44059 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
•
FLANGE DIAMETER: 1.220 INCHES NOMINAL IN
•
FSC APPLICATION DATA: VALVE,BRAKE CONTROL
•
FLANGE THICKNESS: 0.531 INCHES NOMINAL IN
•
BODY OUTSIDE DIAMETER: 0.922 INCHES MINIMUM AND 0.925 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: PARALLEL
•
BODY INSIDE DIAMETER: 0.862 INCHES MINIMUM AND 0.866 INCHES MAXIMUM IN
•
OUTSIDE CHAMFER ANGLE IN DEG: 90.0
TECHNICAL CHARACTERISTICS
FLANGE DIAMETER1.220 INCHES NOMINAL IN
OVERALL HEIGHT0.590 INCHES NOMINAL IN
FSC APPLICATION DATAVALVE,BRAKE CONTROL
FLANGE THICKNESS0.531 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER0.922 INCHES MINIMUM AND 0.925 INCHES MAXIMUM IN
STYLE DESIGNATORPARALLEL
BODY INSIDE DIAMETER0.862 INCHES MINIMUM AND 0.866 INCHES MAXIMUM IN
OUTSIDE CHAMFER ANGLE IN DEG90.0
CASEHARDENING INDICATORNOT 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 ACO44059?
ACO44059 is a RETAINER,HELICAL COMPRESSION SPR.
What is the NSN for ACO44059?
ACO44059 is cataloged in the U.S. Government catalog under NSN 5340-01-172-9484. 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.