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66-2418 — RETAINER,HELICAL COMPRESSION SPR

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

66-2418: RETAINER,HELICAL COMPRESSION SPR.

RETAINER,HELICAL COMPRESSION SPR. Key specifications include material: STEEL COMP 4340, lip_thickness: 0.100 INCHES NOMINAL IN, overall_height: 0.580 INCHES NOMINAL IN, flange_diameter: 0.780 INCHES NOMINAL IN, flange_thickness: 0.060 INCHES NOMINAL IN, style_designator: PARALLEL. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-573-3153, 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
66-2418
NSN: 5340-00-573-3153
FSC: 5340 — Hardware, Commercial
CAGE: 17765 — THE BOEING COMPANY DIV COMMERCIAL (USA)
SPECIFICATIONS
materialSTEEL COMP 4340
lip_thickness0.100 INCHES NOMINAL IN
overall_height0.580 INCHES NOMINAL IN
flange_diameter0.780 INCHES NOMINAL IN
flange_thickness0.060 INCHES NOMINAL IN
style_designatorPARALLEL
end_hole_diameter0.421 INCHES MINIMUM AND 0.423 INCHES MAXIMUM IN
body_inside_diameter0.460 INCHES MINIMUM AND 0.470 INCHES MAXIMUM IN
body_outside_diameter0.560 INCHES NOMINAL IN
material_document_and_classificationMIL-S-5000, COMP 4340 MIL SPEC SINGLE MATERIAL RESPONSE
NSN5340-00-573-3153
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 66-2418 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: 0.780 INCHES NOMINAL IN
•
FLANGE THICKNESS: 0.060 INCHES NOMINAL IN
•
BODY OUTSIDE DIAMETER: 0.560 INCHES NOMINAL IN
•
STYLE DESIGNATOR: PARALLEL
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-5000, COMP 4340 MIL SPEC SINGLE MATERIAL RESPONSE
•
BODY INSIDE DIAMETER: 0.460 INCHES MINIMUM AND 0.470 INCHES MAXIMUM IN
•
LIP THICKNESS: 0.100 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
FLANGE DIAMETER0.780 INCHES NOMINAL IN
OVERALL HEIGHT0.580 INCHES NOMINAL IN
FLANGE THICKNESS0.060 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER0.560 INCHES NOMINAL IN
STYLE DESIGNATORPARALLEL
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5000, COMP 4340 MIL SPEC SINGLE MATERIAL RESPONSE
BODY INSIDE DIAMETER0.460 INCHES MINIMUM AND 0.470 INCHES MAXIMUM IN
LIP THICKNESS0.100 INCHES NOMINAL IN
MATERIALSTEEL COMP 4340
END HOLE DIAMETER0.421 INCHES MINIMUM AND 0.423 INCHES MAXIMUM 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: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 66-2418?
66-2418 is a RETAINER,HELICAL COMPRESSION SPR.
What is the NSN for 66-2418?
66-2418 is cataloged in the U.S. Government catalog under NSN 5340-00-573-3153. This indicates validated use in U.S. government and defense supply chains.
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