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PartsTable / COMPONENT / B4283
B4283 ✓ 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: ALUMINUM ALLOY FRAME, mesh_size: 18.0, design_type: REUSABLE, overall_width: 6.500 INCHES NOMINAL IN, body_thickness: 0.187 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN, style_designator: RECTANGULAR (INCL SQUARE). This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-343-7785, 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
B4283
NSN: 3120-00-343-7785
FSC: 3120
CAGE: 16603 — CONTROL FLOW, INC. DBA WESTECH HEAVY MACHINERY DIVISION DIV WESTECH HEAVY MACHINERY DIVISION (USA)
SPECIFICATIONS
materialALUMINUM ALLOY FRAME
mesh_size18.0
design_typeREUSABLE
overall_width6.500 INCHES NOMINAL IN
body_thickness0.187 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN
style_designatorRECTANGULAR (INCL SQUARE)
surface_treatmentIRIDIUM SCREENING
body_overall_length6.500 INCHES NOMINAL IN
maximum_air_flow_rate90.0 CUBIC FEET PER MINUTE
filtering_media_designMESH SINGLE FILTERING MEDIA RESPONSE
specification/standard_data81349-MS-F-F300B GOVERNMENT SPECIFICATION
part_name_assigned_by_controlling_agencyFILTER,LOW VELOCITY
NSN3120-00-343-7785
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: B4283 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
4283Interchangeable
interchangeable cross-reference
interchangeable
7581173P3Interchangeable
interchangeable cross-reference
interchangeable
165-000001Interchangeable
interchangeable cross-reference
interchangeable
TA7011Interchangeable
interchangeable cross-reference
interchangeable
W1F8-9Interchangeable
interchangeable cross-reference
interchangeable
GA500AU1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B4283?
B4283 is a BUSHING,SLEEVE.
What parts can replace B4283?
There are 21 known substitutes for B4283: 4283, 7581173P3, 165-000001 and 18 more. Substitute compatibility should be verified for your specific system.
What is the NSN for B4283?
B4283 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-343-7785. 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