PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 161-000305-00
161-000305-00 ✓ 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 COUPLING,SHAFT,RIGID is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 OVERALL, corner_shape: SQUARE ALL CORNERS, overall_length: 0.5760 INCHES MINIMUM AND 0.5800 INCHES MAXIMUM IN, style_designator: SOLID, PLAIN, NO OUTSIDE FLANGES, surface_treatment: PASSIVATE OVERALL, body_inside_diameter: 0.1040 INCHES MINIMUM AND 0.1080 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-781-0432, 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
161-000305-00
NSN: 3120-00-781-0432
FSC: 3120
CAGE: 73949 — GUARDIAN ELECTRIC MANUFACTURING CO DIV GUARDIAN ELECTRIC MFG CO (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
corner_shapeSQUARE ALL CORNERS
overall_length0.5760 INCHES MINIMUM AND 0.5800 INCHES MAXIMUM IN
style_designatorSOLID, PLAIN, NO OUTSIDE FLANGES
surface_treatmentPASSIVATE OVERALL
body_inside_diameter0.1040 INCHES MINIMUM AND 0.1080 INCHES MAXIMUM IN
body_outside_diameter0.2240 INCHES MINIMUM AND 0.2280 INCHES MAXIMUM IN
NSN3120-00-781-0432
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 161-000305-00 · 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
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
CORNER SHAPE: SQUARE ALL CORNERS
•
MATERIAL: STEEL COMP 303 OVERALL
•
BODY INSIDE DIAMETER: 0.1040 INCHES MINIMUM AND 0.1080 INCHES MAXIMUM IN
•
BODY OUTSIDE DIAMETER: 0.2240 INCHES MINIMUM AND 0.2280 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORSOLID, PLAIN, NO OUTSIDE FLANGES
SURFACE TREATMENTPASSIVATE OVERALL
CORNER SHAPESQUARE ALL CORNERS
MATERIALSTEEL COMP 303 OVERALL
BODY INSIDE DIAMETER0.1040 INCHES MINIMUM AND 0.1080 INCHES MAXIMUM IN
BODY OUTSIDE DIAMETER0.2240 INCHES MINIMUM AND 0.2280 INCHES MAXIMUM IN
OVERALL LENGTH0.5760 INCHES MINIMUM AND 0.5800 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
2544Interchangeable
interchangeable cross-reference
interchangeable
BU305Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 161-000305-00?
161-000305-00 is a COUPLING,SHAFT,RIGID.
What parts can replace 161-000305-00?
There are 2 known substitutes for 161-000305-00: 2544, BU305. Substitute compatibility should be verified for your specific system.
What is the NSN for 161-000305-00?
161-000305-00 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-781-0432. 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