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6539-40-701-7101 — SPACER,RING

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

6539-40-701-7101: SPACER,RING.

The SPACER,RING is a the manufacturer industrial component. Key specifications include material: STEEL COMP E4340, surface_finish: 125.0 MICROINCHES OVERALL, hardness_rating: 26.0 ROCKWELL C MINIMUM AND 33.0 ROCKWELL C MAXIMUM, inside_diameter: 2.255 INCHES MINIMUM AND 2.260 INCHES MAXIMUM IN, outside_diameter: 2.500 INCHES NOMINAL IN, overall_thickness: 0.560 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5365-01-131-0621, 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
6539-40-701-7101
NSN: 5365-01-131-0621
FSC: 5365 — Bushings, Rings, Shims, and Spacers
CAGE: 78286 — SIKORSKY AIRCRAFT CORPORATION DBA SIKORSKY AIRCRAFT CORP (USA)
SPECIFICATIONS
materialSTEEL COMP E4340
surface_finish125.0 MICROINCHES OVERALL
hardness_rating26.0 ROCKWELL C MINIMUM AND 33.0 ROCKWELL C MAXIMUM
inside_diameter2.255 INCHES MINIMUM AND 2.260 INCHES MAXIMUM IN
outside_diameter2.500 INCHES NOMINAL IN
overall_thickness0.560 INCHES NOMINAL IN
surface_treatmentOXIDE
material_document_and_classificationMIL-S-5000,COND C MIL SPEC SINGLE MATERIAL RESPONSE
NSN5365-01-131-0621
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SPACER,RING TITLE COMPONENT PN 6539-40-701-7101 MFR SPACER,RING
KEY FEATURES
•
SURFACE FINISH: 125.0 MICROINCHES OVERALL
•
OUTSIDE DIAMETER: 2.500 INCHES NOMINAL IN
•
OVERALL THICKNESS: 0.560 INCHES NOMINAL IN
•
HARDNESS RATING: 26.0 ROCKWELL C MINIMUM AND 33.0 ROCKWELL C MAXIMUM
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-5000,COND C MIL SPEC SINGLE MATERIAL RESPONSE
•
INSIDE DIAMETER: 2.255 INCHES MINIMUM AND 2.260 INCHES MAXIMUM IN
•
SURFACE TREATMENT: OXIDE
•
MATERIAL: STEEL COMP E4340
TECHNICAL CHARACTERISTICS
SURFACE FINISH125.0 MICROINCHES OVERALL
OUTSIDE DIAMETER2.500 INCHES NOMINAL IN
OVERALL THICKNESS0.560 INCHES NOMINAL IN
HARDNESS RATING26.0 ROCKWELL C MINIMUM AND 33.0 ROCKWELL C MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5000,COND C MIL SPEC SINGLE MATERIAL RESPONSE
INSIDE DIAMETER2.255 INCHES MINIMUM AND 2.260 INCHES MAXIMUM IN
SURFACE TREATMENTOXIDE
MATERIALSTEEL COMP E4340
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 6539-40-701-7101?
6539-40-701-7101 is a SPACER,RING.
What is the NSN for 6539-40-701-7101?
6539-40-701-7101 is cataloged in the U.S. Government catalog under NSN 5365-01-131-0621. 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.