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950653 — FITTING,STRUCTURAL COMPONENT,AIR

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

950653: FITTING,STRUCTURAL COMPONENT,AIR.

FITTING,STRUCTURAL COMPONENT,AIR. Key specifications include end_item_identification: B-52, part_name_assigned_by_controlling_agency: PLUG SUPPORT ACCESS PANEL. This part is cataloged in the U.S.

Government catalog under NSN 3120-00-478-4326, 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
950653
NSN: 3120-00-478-4326
NIINs: 004784326, 012563505, 016175598
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 26512 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
end_item_identificationB-52
part_name_assigned_by_controlling_agencyPLUG SUPPORT ACCESS PANEL
NSN3120-00-478-4326
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 950653 · OEM ⚠ VERIFY BEFORE ORDERING ABEC grade: higher = tighter tolerance = higher cost. ABEC-1 is standard, ABEC-7+ for precision spindles. Open, shielded (ZZ), and sealed (2RS) versions have different max RPM ratings ✓ BROKER TIP 2RS = sealed for life (no maintenance). ZZ = shielded, re-greaseable. Open = must lubricate on install. Common interchange: 6205-2RS = 6205-2RSR = 6205-DDU (same bearing, different suffix) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
CORNER SHAPE: SQUARE ALL CORNERS
•
BODY OUTSIDE DIAMETER: 0.4960 INCHES MINIMUM AND 0.4970 INCHES MAXIMUM IN
•
HARDNESS RATING: 27.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
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STYLE DESIGNATOR: SOLID, PLAIN, NO OUTSIDE FLANGES
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MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
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BODY INSIDE DIAMETER: 0.3070 INCHES MINIMUM AND 0.3170 INCHES MAXIMUM IN
•
SURFACE TREATMENT: CHROMIUM OUTSIDE DIAMETER SURFACE OF BODY
TECHNICAL CHARACTERISTICS
CORNER SHAPESQUARE ALL CORNERS
BODY OUTSIDE DIAMETER0.4960 INCHES MINIMUM AND 0.4970 INCHES MAXIMUM IN
HARDNESS RATING27.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
STYLE DESIGNATORSOLID, PLAIN, NO OUTSIDE FLANGES
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
OVERALL LENGTH3.3720 INCHES MINIMUM AND 3.3780 INCHES MAXIMUM IN
BODY INSIDE DIAMETER0.3070 INCHES MINIMUM AND 0.3170 INCHES MAXIMUM IN
SURFACE TREATMENTCHROMIUM OUTSIDE DIAMETER SURFACE OF BODY
MATERIALSTEEL COMP 4130 OVERALL
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 950653?
950653 is a FITTING,STRUCTURAL COMPONENT,AIR.
What is the NSN for 950653?
950653 is cataloged in the U.S. Government catalog under NSN 3120-00-478-4326. 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.