PartsTable
Technical Data Sheet
PartsTable / COMPONENT / NAS77
NAS77 ✓ 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,WASHER,THRUST is a the manufacturer industrial component. Key specifications include diameter: 0.3200 INCHES NOMINAL IN, material: STEEL CORROSION RESISTING OVERALL, corner_shape: SQUARE ALL CORNERS, flange_width: 0.057 INCHES MINIMUM AND 0.062 INCHES MAXIMUM IN, bore_diameter: 0.7495 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN, heat_treatment: H-1025 STRAIN HARDENED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-066-8659, 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
NAS77
NSN: 3120-00-066-8659
FSC: 3120
CAGE: 80205 — NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE (USA)
SPECIFICATIONS
diameter0.3200 INCHES NOMINAL IN
materialSTEEL CORROSION RESISTING OVERALL
corner_shapeSQUARE ALL CORNERS
flange_width0.057 INCHES MINIMUM AND 0.062 INCHES MAXIMUM IN
bore_diameter0.7495 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN
heat_treatmentH-1025 STRAIN HARDENED
overall_length0.962 INCHES NOMINAL IN
surface_finish100.0 MICROINCHES BODY
hardness_rating23.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM OUTER RACE MEMBER
outside_diameter0.7500 INCHES NOMINAL IN
special_featuresBOLT SIZE: 0.375 INCHES IN
style_designatorSOLID, EXTERNAL FLANGE ONE END
NSN3120-00-066-8659
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: NAS77 · 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
•
BODY OUTSIDE DIAMETER: 0.6882 INCHES MINIMUM AND 0.6892 INCHES MAXIMUM IN
•
SPECIFICATION/STANDARD DATA: 80205-NAS77 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
•
CORNER SHAPE: SQUARE OUTSIDE RIGHT CORNER
•
STYLE DESIGNATOR: SOLID, EXTERNAL FLANGE ONE END
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-6050 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6758 MIL SPEC 2ND MATERIAL RESPONSE OVERALL
•
MATERIAL: STEEL COMP 8630 OR STEEL COMP 4130 OVERALL
•
FLANGE OUTSIDE DIAMETER: 0.8020 INCHES MINIMUM AND 0.8220 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
BODY OUTSIDE DIAMETER0.6882 INCHES MINIMUM AND 0.6892 INCHES MAXIMUM IN
SPECIFICATION/STANDARD DATA80205-NAS77 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
CORNER SHAPESQUARE OUTSIDE RIGHT CORNER
CORNER SHAPESQUARE OUTSIDE LEFT CORNER
STYLE DESIGNATORSOLID, EXTERNAL FLANGE ONE END
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-6050 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6758 MIL SPEC 2ND MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 8630 OR STEEL COMP 4130 OVERALL
FLANGE OUTSIDE DIAMETER0.8020 INCHES MINIMUM AND 0.8220 INCHES MAXIMUM IN
BODY INSIDE DIAMETER0.5625 INCHES MINIMUM AND 0.5640 INCHES MAXIMUM IN
SURFACE FINISH100.0 MICROINCHES INTERMEDIATE LAYER
VERIFIED SUBSTITUTES & CROSS-REFERENCES 1
NAS77-9-25Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy NAS77?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is NAS77?
NAS77 is a BEARING,WASHER,THRUST.
What parts can replace NAS77?
There is 1 known substitute for NAS77: NAS77-9-25. Substitute compatibility should be verified for your specific system.
What is the NSN for NAS77?
NAS77 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-066-8659. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — NAS77

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026