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999R0228 PIECE 5 — RING,WEARING

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

999R0228 PIECE 5: RING,WEARING.

The RING,WEARING is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY, body_style: EXTERNAL FLANGE, corner_shape: SQUARE ALL CORNERS, overall_length: 0.625 INCHES NOMINAL IN, surface_finish: 125.0 MICROINCHES ALL SURFACES, flange_diameter: 6.187 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4320-01-213-7731, 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
999R0228 PIECE 5
NSN: 4320-01-213-7731
FSC: 4320 — Power and Hand Pumps
CAGE: 63857 — CIRCOR NAVAL SOLUTIONS LLC DBA WARREN PUMPS (USA)
SPECIFICATIONS
materialCOPPER ALLOY
body_styleEXTERNAL FLANGE
corner_shapeSQUARE ALL CORNERS
overall_length0.625 INCHES NOMINAL IN
surface_finish125.0 MICROINCHES ALL SURFACES
flange_diameter6.187 INCHES NOMINAL IN
bolt_hole_quantity4
body_inside_diameter4.875 INCHES NOMINAL IN
bolt_circle_diameter5.625 INCHES NOMINAL IN
body_outside_diameter5.186 INCHES NOMINAL IN
end_item_identificationWARREN PUMPS MODEL 3-1/2-SED-8 CENTRIFUGAL PUMP
left_side_flange_thickness0.187 INCHES NOMINAL IN
NSN4320-01-213-7731
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RING,WEARING TITLE COMPONENT PN 999R0228 PIECE 5 MFR RING,WEARING
KEY FEATURES
•
SURFACE FINISH: 125.0 MICROINCHES ALL SURFACES
•
FLANGE DIAMETER: 6.187 INCHES NOMINAL IN
•
CORNER SHAPE: SQUARE ALL CORNERS
•
BODY STYLE: EXTERNAL FLANGE
•
BODY OUTSIDE DIAMETER: 5.186 INCHES NOMINAL IN
•
UNTHREADED MOUNTING HOLE DIAMETER: 0.221 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-B-16261,GRADE 3 MIL SPEC SINGLE MATERIAL RESPONSE
TECHNICAL CHARACTERISTICS
SURFACE FINISH125.0 MICROINCHES ALL SURFACES
FLANGE DIAMETER6.187 INCHES NOMINAL IN
CORNER SHAPESQUARE ALL CORNERS
BODY STYLEEXTERNAL FLANGE
BODY OUTSIDE DIAMETER5.186 INCHES NOMINAL IN
UNTHREADED MOUNTING HOLE DIAMETER0.221 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-B-16261,GRADE 3 MIL SPEC SINGLE MATERIAL RESPONSE
OVERALL LENGTH0.625 INCHES NOMINAL IN
LEFT SIDE FLANGE THICKNESS0.187 INCHES NOMINAL IN
BODY INSIDE DIAMETER4.875 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 2
654B0182Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
999R0228Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 999R0228 PIECE 5?
999R0228 PIECE 5 is a RING,WEARING.
What parts can replace 999R0228 PIECE 5?
There are 2 known substitutes for 999R0228 PIECE 5: 654B0182, 999R0228. Substitute compatibility should be verified for your specific system.
What is the NSN for 999R0228 PIECE 5?
999R0228 PIECE 5 is cataloged in the U.S. Government catalog under NSN 4320-01-213-7731. 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.