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Technical Data Sheet
PartsTable / COMPONENT / NAS75
NAS75 ✓ Verified by PartsTable
— · BALL BEARING
WHAT YOU NEED TO KNOW
2RS = sealed for life, ZZ = shielded re-greaseable ABEC grade: higher = tighter tolerance
ABEC-1 standard, ABEC-7+ for precision spindles
PRODUCT OVERVIEW

The BEARING,PLAIN,SELF-ALIGNING is a the manufacturer industrial component. Key specifications include material: STEEL COMP 630 OVERALL, corner_shape: CHAMFERED ALL CORNERS, flange_width: 0.0550 INCHES MINIMUM AND 0.0600 INCHES MAXIMUM IN, overall_length: 0.6513 INCHES MINIMUM AND 0.6563 INCHES MAXIMUM IN, surface_finish: 125.0 MICROINCHES INTERMEDIATE LAYER, hardness_rating: 30.0 ROCKWELL C MINIMUM AND 70.0 ROCKWELL C MAXIMUM OVERALL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-051-9756, 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
NAS75
NSN: 3120-00-051-9756
FSC: 3120
CAGE: 80205 — NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE (USA)
SPECIFICATIONS
materialSTEEL COMP 630 OVERALL
corner_shapeCHAMFERED ALL CORNERS
flange_width0.0550 INCHES MINIMUM AND 0.0600 INCHES MAXIMUM IN
overall_length0.6513 INCHES MINIMUM AND 0.6563 INCHES MAXIMUM IN
surface_finish125.0 MICROINCHES INTERMEDIATE LAYER
hardness_rating30.0 ROCKWELL C MINIMUM AND 70.0 ROCKWELL C MAXIMUM OVERALL
special_featuresALTERNATE METHODS OF FLANGE UNDERCUT
style_designatorSOLID, PLAIN, NO OUTSIDE FLANGES
surface_treatmentPASSIVATE OVERALL
body_inside_diameter0.2500 INCHES MINIMUM AND 0.2515 INCHES MAXIMUM IN
body_outside_diameter0.3756 INCHES MINIMUM AND 0.3761 INCHES MAXIMUM IN
end_item_identificationF-35 AIRCRAFT
NSN3120-00-051-9756
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: NAS75 · 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
•
STYLE DESIGNATOR: SOLID, PLAIN, NO OUTSIDE FLANGES
•
CORNER SHAPE: CHAMFERED INSIDE RIGHT CORNER
•
MATERIAL: STEEL COMP 4130 OR STEEL COMP 8630 OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-6798 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6050 MIL SPEC 2ND MATERIAL RESPONSE OVERALL
•
BODY OUTSIDE DIAMETER: 0.4381 INCHES MINIMUM AND 0.4386 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORSOLID, PLAIN, NO OUTSIDE FLANGES
CORNER SHAPECHAMFERED INSIDE RIGHT CORNER
SPECIAL FEATURESID AND OD TO BE PARALLEL AND CONCENTRIC WITHIN 0.0030 TIR
CORNER SHAPECHAMFERED INSIDE LEFT CORNER
MATERIALSTEEL COMP 4130 OR STEEL COMP 8630 OVERALL
CORNER SHAPESQUARE OUTSIDE LEFT CORNER
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-6798 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6050 MIL SPEC 2ND MATERIAL RESPONSE OVERALL
BODY OUTSIDE DIAMETER0.4381 INCHES MINIMUM AND 0.4386 INCHES MAXIMUM IN
OVERALL LENGTH0.9012 INCHES MINIMUM AND 0.9062 INCHES MAXIMUM IN
BODY INSIDE DIAMETER0.3125 INCHES MINIMUM AND 0.3140 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 1
NAS74Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is NAS75?
NAS75 is a BEARING,PLAIN,SELF-ALIGNING.
What parts can replace NAS75?
There is 1 known substitute for NAS75: NAS74. Substitute compatibility should be verified for your specific system.
What is the NSN for NAS75?
NAS75 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-051-9756. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026