PartsTable
Technical Data Sheet
PartsTable / COMPONENT / AB-308
AB-308 ✓ 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,SLEEVE is a the manufacturer industrial component. Key specifications include material: IRON ALLOY OVERALL, corner_shape: SQUARE ALL CORNERS, overall_length: 0.2500 INCHES NOMINAL IN, style_designator: SOLID, PLAIN, NO OUTSIDE FLANGES, body_inside_diameter: 0.2570 INCHES NOMINAL IN, body_outside_diameter: 0.3750 INCHES NOMINAL 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 3120-01-508-5012, 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
AB-308
NSN: 3120-01-508-5012
FSC: 3120
CAGE: 70417 — CHRYSLER CORP AMPLEX DIV (USA)
SPECIFICATIONS
materialIRON ALLOY OVERALL
corner_shapeSQUARE ALL CORNERS
overall_length0.2500 INCHES NOMINAL IN
style_designatorSOLID, PLAIN, NO OUTSIDE FLANGES
body_inside_diameter0.2570 INCHES NOMINAL IN
body_outside_diameter0.3750 INCHES NOMINAL IN
material_document_and_classificationMIL-B-5687,TYPE II,COMPOSITION B FED SPEC SINGLE MATERIAL RESPONSE OVERALL
part_name_assigned_by_controlling_agencyBEARING,SLEEVE,PLAIN,IRON-COPPER
NSN3120-01-508-5012
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: AB-308 · 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
•
MATERIAL: IRON ALLOY OVERALL
•
STYLE DESIGNATOR: SOLID, PLAIN, NO OUTSIDE FLANGES
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-B-5687,TYPE II,COMPOSITION B FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
CORNER SHAPE: SQUARE ALL CORNERS
•
BODY OUTSIDE DIAMETER: 0.3750 INCHES NOMINAL IN
•
BODY INSIDE DIAMETER: 0.2570 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALIRON ALLOY OVERALL
STYLE DESIGNATORSOLID, PLAIN, NO OUTSIDE FLANGES
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-B-5687,TYPE II,COMPOSITION B FED SPEC SINGLE MATERIAL RESPONSE OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYBEARING,SLEEVE,PLAIN,IRON-COPPER
CORNER SHAPESQUARE ALL CORNERS
BODY OUTSIDE DIAMETER0.3750 INCHES NOMINAL IN
OVERALL LENGTH0.2500 INCHES NOMINAL IN
BODY INSIDE DIAMETER0.2570 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
74016Interchangeable
interchangeable cross-reference
interchangeable
P74016Interchangeable
interchangeable cross-reference
interchangeable
200330107-1Interchangeable
Same NIIN cross-reference
interchangeable
A257-375-16Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy AB-308?
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 AB-308?
AB-308 is a BEARING,SLEEVE.
What parts can replace AB-308?
There are 4 known substitutes for AB-308: 74016, P74016, 200330107-1 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AB-308?
AB-308 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-01-508-5012. 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 — AB-308

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