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1594821 — SPACER,RING

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

1594821: SPACER,RING.

The SPACER,RING is a the manufacturer industrial component. Key specifications include material: STEEL COMP 304, surface_finish: 125.0 MICROINCHES LEFT SIDE, inside_diameter: 2.500 INCHES NOMINAL IN, outside_diameter: 2.630 INCHES NOMINAL IN, overall_thickness: 0.375 INCHES NOMINAL IN, surface_treatment: PASSIVATE. This part is cataloged in the U.S.

Government catalog under NSN 5365-00-778-9979, 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
1594821
NSN: 5365-00-778-9979
FSC: 5365 — Bushings, Rings, Shims, and Spacers
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialSTEEL COMP 304
surface_finish125.0 MICROINCHES LEFT SIDE
inside_diameter2.500 INCHES NOMINAL IN
outside_diameter2.630 INCHES NOMINAL IN
overall_thickness0.375 INCHES NOMINAL IN
surface_treatmentPASSIVATE
material_document_and_classificationQQ-S-763,COND A FED SPEC SINGLE MATERIAL RESPONSE
NSN5365-00-778-9979
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SPACER,RING TITLE COMPONENT PN 1594821 MFR SPACER,RING
KEY FEATURES
•
SURFACE FINISH: 125.0 MICROINCHES RIGHT SIDE
•
OUTSIDE DIAMETER: 2.630 INCHES NOMINAL IN
•
OVERALL THICKNESS: 0.375 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-763,COND A FED SPEC SINGLE MATERIAL RESPONSE
•
INSIDE DIAMETER: 2.500 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
SURFACE FINISH125.0 MICROINCHES RIGHT SIDE
SURFACE FINISH125.0 MICROINCHES LARGEST OUTSIDE DIAMETER
SURFACE FINISH125.0 MICROINCHES LEFT SIDE
SURFACE FINISH125.0 MICROINCHES BORE
OUTSIDE DIAMETER2.630 INCHES NOMINAL IN
OVERALL THICKNESS0.375 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763,COND A FED SPEC SINGLE MATERIAL RESPONSE
INSIDE DIAMETER2.500 INCHES NOMINAL IN
SURFACE TREATMENTPASSIVATE
MATERIALSTEEL COMP 304
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
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1594821?
1594821 is a SPACER,RING.
What is the NSN for 1594821?
1594821 is cataloged in the U.S. Government catalog under NSN 5365-00-778-9979. 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.