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Technical Data Sheet
PartsTable / COMPONENT / 54A50A83
54A50A83 ✓ 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 BUSHING,SLEEVE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4130 OVERALL, corner_shape: SQUARE ALL CORNERS, overall_length: 1.5000 INCHES MINIMUM AND 1.5020 INCHES MAXIMUM IN, surface_finish: 100.0 MICROINCHES INTERMEDIATE LAYER, style_designator: SOLID, PLAIN, NO OUTSIDE FLANGES, surface_treatment: CADMIUM 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 3120-00-050-7710, 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
54A50A83
NSN: 3120-00-050-7710
FSC: 3120
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialSTEEL COMP 4130 OVERALL
corner_shapeSQUARE ALL CORNERS
overall_length1.5000 INCHES MINIMUM AND 1.5020 INCHES MAXIMUM IN
surface_finish100.0 MICROINCHES INTERMEDIATE LAYER
style_designatorSOLID, PLAIN, NO OUTSIDE FLANGES
surface_treatmentCADMIUM OVERALL
body_inside_diameter0.3750 INCHES MINIMUM AND 0.3770 INCHES MAXIMUM IN
body_outside_diameter0.4970 INCHES MINIMUM AND 0.4990 INCHES MAXIMUM IN
material_document_and_classificationMIL-T-6736,TY 1,COND N MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN3120-00-050-7710
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 54A50A83 · 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: 0.4970 INCHES MINIMUM AND 0.4990 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: SOLID, PLAIN, NO OUTSIDE FLANGES
•
MATERIAL: STEEL COMP 4130 OVERALL
•
SURFACE FINISH: 100.0 MICROINCHES INTERMEDIATE LAYER
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-T-6736,TY 1,COND N MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
BODY INSIDE DIAMETER: 0.3750 INCHES MINIMUM AND 0.3770 INCHES MAXIMUM IN
•
CORNER SHAPE: SQUARE ALL CORNERS
•
SURFACE TREATMENT: CADMIUM OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
BODY OUTSIDE DIAMETER0.4970 INCHES MINIMUM AND 0.4990 INCHES MAXIMUM IN
STYLE DESIGNATORSOLID, PLAIN, NO OUTSIDE FLANGES
MATERIALSTEEL COMP 4130 OVERALL
SURFACE FINISH100.0 MICROINCHES INTERMEDIATE LAYER
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-T-6736,TY 1,COND N MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
BODY INSIDE DIAMETER0.3750 INCHES MINIMUM AND 0.3770 INCHES MAXIMUM IN
CORNER SHAPESQUARE ALL CORNERS
SURFACE TREATMENTCADMIUM OVERALL
OVERALL LENGTH1.5000 INCHES MINIMUM AND 1.5020 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
731292Interchangeable
interchangeable cross-reference
interchangeable
534733-530Interchangeable
interchangeable cross-reference
interchangeable
1138977Interchangeable
interchangeable cross-reference
interchangeable
77013Interchangeable
interchangeable cross-reference
interchangeable
273829-147Interchangeable
interchangeable cross-reference
interchangeable
201KTT3FS381AInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 54A50A83?
54A50A83 is a BUSHING,SLEEVE.
What parts can replace 54A50A83?
There are 14 known substitutes for 54A50A83: 731292, 534733-530, 1138977 and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 54A50A83?
54A50A83 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-050-7710. This indicates validated use in U.S. government and defense supply chains.
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PartsTable Design LLC · partstable.com
Last verified: July 2026