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BS5-1881-5 — RING,WEARING

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

BS5-1881-5: RING,WEARING.

The RING,WEARING is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY, body_style: INTERNAL FLANGE W/EXTERNAL LOCKING FLANGE, corner_shape: SQUARE ALL CORNERS, overall_length: 1.000 INCHES NOMINAL IN, distance_from_end: 5.750 INCHES NOMINAL IN, body_inside_diameter: 5.750 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4320-00-398-9502, 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
BS5-1881-5
NSN: 4320-00-398-9502
FSC: 4320 — Power and Hand Pumps
CAGE: 63857 — CIRCOR NAVAL SOLUTIONS LLC DBA WARREN PUMPS (USA)
SPECIFICATIONS
materialCOPPER ALLOY
body_styleINTERNAL FLANGE W/EXTERNAL LOCKING FLANGE
corner_shapeSQUARE ALL CORNERS
overall_length1.000 INCHES NOMINAL IN
distance_from_end5.750 INCHES NOMINAL IN
body_inside_diameter5.750 INCHES NOMINAL IN
body_outside_diameter6.250 INCHES NOMINAL IN
internal_flange_width0.438 INCHES NOMINAL IN
end_to_flange_distance0.812 INCHES NOMINAL IN
distance_between_flanges0.625 INCHES NOMINAL IN
distance_below_centerline0.062 INCHES NOMINAL IN
internal_flange_lip_width0.172 INCHES NOMINAL IN
NSN4320-00-398-9502
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RING,WEARING TITLE COMPONENT PN BS5-1881-5 MFR RING,WEARING
KEY FEATURES
•
CORNER SHAPE: SQUARE ALL CORNERS
•
DISTANCE BETWEEN FLANGES: 0.625 INCHES NOMINAL IN
•
INTERNAL FLANGE OUTSIDE DIAMETER: 6.625 INCHES NOMINAL IN
•
BODY STYLE: INTERNAL FLANGE W/EXTERNAL LOCKING FLANGE
•
INTERNAL FLANGE LIP WIDTH: 0.172 INCHES NOMINAL IN
•
DISTANCE FROM END: 5.750 INCHES NOMINAL IN
•
BODY OUTSIDE DIAMETER: 6.250 INCHES NOMINAL IN
•
END TO FLANGE DISTANCE: 0.812 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
CORNER SHAPESQUARE ALL CORNERS
DISTANCE BETWEEN FLANGES0.625 INCHES NOMINAL IN
INTERNAL FLANGE OUTSIDE DIAMETER6.625 INCHES NOMINAL IN
BODY STYLEINTERNAL FLANGE W/EXTERNAL LOCKING FLANGE
INTERNAL FLANGE LIP WIDTH0.172 INCHES NOMINAL IN
DISTANCE FROM END5.750 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER6.250 INCHES NOMINAL IN
END TO FLANGE DISTANCE0.812 INCHES NOMINAL IN
OVERALL LENGTH1.000 INCHES NOMINAL IN
INTERNAL FLANGE INSIDE DIAMETER4.750 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 7
BS4-1664PC5Reference document
Same NSN cross-reference
Reference document — Secondary reference
BS5-1881PC5Reference document
Same NSN cross-reference
Reference document — Secondary reference
BS4-1876PC5Reference document
Same NSN cross-reference
Reference document — Secondary reference
BS5-1435PC5Reference document
Same NSN cross-reference
Reference document — Secondary reference
BS4-1430 PIECE 5Reference document
Same NSN cross-reference
Reference document — Secondary reference
H4320-398-9502Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 BS5-1881-5?
BS5-1881-5 is a RING,WEARING.
What parts can replace BS5-1881-5?
There are 7 known substitutes for BS5-1881-5: BS4-1664PC5, BS5-1881PC5, BS4-1876PC5 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for BS5-1881-5?
BS5-1881-5 is cataloged in the U.S. Government catalog under NSN 4320-00-398-9502. 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.