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BL-4571-1 — SPACER,RING

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

BL-4571-1: SPACER,RING.

The SPACER,RING is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 2024, inside_diameter: 2.500 INCHES NOMINAL IN, outside_diameter: 3.315 INCHES NOMINAL IN, special_features: FOUR HOLES,0.186 IN. MIN DIA,0.191 IN.

MAX DIA UNEQUALLY SPACED; ONE 0.281 IN. DIA HOLE IN, overall_thickness: 0.014 INCHES MINIMUM AND 0.018 INCHES MAXIMUM IN, material_document_and_classification: QQ-A-250/4,T3 FED SPEC SINGLE MATERIAL RESPONSE. This part is cataloged in the U.S.

Government catalog under NSN 5365-00-945-2273, 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
BL-4571-1
NSN: 5365-00-945-2273
FSC: 5365 — Bushings, Rings, Shims, and Spacers
CAGE: 08484 — BREEZE-EASTERN LLC (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 2024
inside_diameter2.500 INCHES NOMINAL IN
outside_diameter3.315 INCHES NOMINAL IN
special_featuresFOUR HOLES,0.186 IN. MIN DIA,0.191 IN. MAX DIA UNEQUALLY SPACED; ONE 0.281 IN. DIA HOLE IN
overall_thickness0.014 INCHES MINIMUM AND 0.018 INCHES MAXIMUM IN
material_document_and_classificationQQ-A-250/4,T3 FED SPEC SINGLE MATERIAL RESPONSE
NSN5365-00-945-2273
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SPACER,RING TITLE COMPONENT PN BL-4571-1 MFR SPACER,RING
KEY FEATURES
•
OUTSIDE DIAMETER: 3.315 INCHES NOMINAL IN
•
OVERALL THICKNESS: 0.014 INCHES MINIMUM AND 0.018 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-250/4,T3 FED SPEC SINGLE MATERIAL RESPONSE
•
INSIDE DIAMETER: 2.500 INCHES NOMINAL IN
•
MATERIAL: ALUMINUM ALLOY 2024
TECHNICAL CHARACTERISTICS
OUTSIDE DIAMETER3.315 INCHES NOMINAL IN
OVERALL THICKNESS0.014 INCHES MINIMUM AND 0.018 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-250/4,T3 FED SPEC SINGLE MATERIAL RESPONSE
INSIDE DIAMETER2.500 INCHES NOMINAL IN
SPECIAL FEATURESFOUR HOLES,0.186 IN. MIN DIA,0.191 IN. MAX DIA UNEQUALLY SPACED; ONE 0.281 IN. DIA HOLE IN
MATERIALALUMINUM ALLOY 2024
OTHER ITEMS IN FSC 5365 — Bushings, Rings, Shims, and Spacers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5365-00-000-6078 5365-00-000-7436 5365-00-001-1292 5365-00-001-1365 5365-00-001-1841 5365-00-001-1915 5365-00-001-1916 5365-00-001-1940
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is BL-4571-1?
BL-4571-1 is a SPACER,RING.
What is the NSN for BL-4571-1?
BL-4571-1 is cataloged in the U.S. Government catalog under NSN 5365-00-945-2273. 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.