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55-22306-18 — RING,WEARING

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

55-22306-18: RING,WEARING.

The RING,WEARING is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY, body_style: EXTERNAL LOCKING FLANGE, corner_shape: SQUARE ALL CORNERS, overall_length: 1.128 INCHES NOMINAL IN, body_inside_diameter: 4.490 INCHES NOMINAL IN, body_outside_diameter: 4.997 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4320-00-398-5477, 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
55-22306-18
NSN: 4320-00-398-5477
FSC: 4320 — Power and Hand Pumps
CAGE: 52081 — EURAMCO SAFETY INC (USA)
SPECIFICATIONS
materialCOPPER ALLOY
body_styleEXTERNAL LOCKING FLANGE
corner_shapeSQUARE ALL CORNERS
overall_length1.128 INCHES NOMINAL IN
body_inside_diameter4.490 INCHES NOMINAL IN
body_outside_diameter4.997 INCHES NOMINAL IN
end_to_flange_distance0.320 INCHES NOMINAL IN
center_flange_thickness0.242 INCHES NOMINAL IN
largest_external_anchor_flange_radius2.758 INCHES NOMINAL IN
smallest_external_anchor_flange_radius2.498 INCHES NOMINAL IN
NSN4320-00-398-5477
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RING,WEARING TITLE COMPONENT PN 55-22306-18 MFR RING,WEARING
KEY FEATURES
•
CENTER FLANGE THICKNESS: 0.242 INCHES NOMINAL IN
•
CORNER SHAPE: SQUARE ALL CORNERS
•
BODY STYLE: EXTERNAL LOCKING FLANGE
•
BODY OUTSIDE DIAMETER: 4.997 INCHES NOMINAL IN
•
END TO FLANGE DISTANCE: 0.320 INCHES NOMINAL IN
•
BODY INSIDE DIAMETER: 4.490 INCHES NOMINAL IN
•
SMALLEST EXTERNAL ANCHOR FLANGE RADIUS: 2.498 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
CENTER FLANGE THICKNESS0.242 INCHES NOMINAL IN
CORNER SHAPESQUARE ALL CORNERS
BODY STYLEEXTERNAL LOCKING FLANGE
BODY OUTSIDE DIAMETER4.997 INCHES NOMINAL IN
END TO FLANGE DISTANCE0.320 INCHES NOMINAL IN
OVERALL LENGTH1.128 INCHES NOMINAL IN
BODY INSIDE DIAMETER4.490 INCHES NOMINAL IN
SMALLEST EXTERNAL ANCHOR FLANGE RADIUS2.498 INCHES NOMINAL IN
MATERIALCOPPER ALLOY
LARGEST EXTERNAL ANCHOR FLANGE RADIUS2.758 INCHES NOMINAL IN
OTHER ITEMS IN FSC 4320 — Power and Hand Pumps
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4320-00-001-1633 4320-00-001-2628 4320-00-001-2629 4320-00-001-2630 4320-00-001-2631 4320-00-001-2632 4320-00-001-3377 4320-00-001-3384
SUBSTITUTES & CROSS-REFERENCES 1
08-984-862-00-003Reference document
Same NSN cross-reference
Reference document — Design control — primary 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 55-22306-18?
55-22306-18 is a RING,WEARING.
What parts can replace 55-22306-18?
There is 1 known substitute for 55-22306-18: 08-984-862-00-003. Substitute compatibility should be verified for your specific system.
What is the NSN for 55-22306-18?
55-22306-18 is cataloged in the U.S. Government catalog under NSN 4320-00-398-5477. 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.