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PartsTable / COMPONENT / MILB5687TYPE2C0MP0SITI0NB
MILB5687TYPE2C0MP0SITI0NB ✓ 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: OIL LUBRICATING LUBRICATION, corner_shape: SQUARE ALL CORNERS, overall_length: 0.4950 INCHES MINIMUM AND 0.5050 INCHES MAXIMUM IN, style_designator: SOLID, PLAIN, NO OUTSIDE FLANGES, body_inside_diameter: 0.3125 INCHES MINIMUM AND 0.3135 INCHES MAXIMUM IN, body_outside_diameter: 0.4390 INCHES MINIMUM AND 0.4400 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 3120-00-433-4678, 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
MILB5687TYPE2C0MP0SITI0NB
NSN: 3120-00-433-4678
FSC: 3120
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialOIL LUBRICATING LUBRICATION
corner_shapeSQUARE ALL CORNERS
overall_length0.4950 INCHES MINIMUM AND 0.5050 INCHES MAXIMUM IN
style_designatorSOLID, PLAIN, NO OUTSIDE FLANGES
body_inside_diameter0.3125 INCHES MINIMUM AND 0.3135 INCHES MAXIMUM IN
body_outside_diameter0.4390 INCHES MINIMUM AND 0.4400 INCHES MAXIMUM IN
nondefinitive_spec/std_data2 TYPE AND B COMPOSITION
material_document_and_classificationMIL-L-6085 MIL SPEC SINGLE MATERIAL RESPONSE LUBRICATION
NSN3120-00-433-4678
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: MILB5687TYPE2C0MP0SITI0NB · 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: OIL LUBRICATING LUBRICATION
•
NONDEFINITIVE SPEC/STD DATA: 2 TYPE AND B COMPOSITION
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-B-5687,COMP B MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
STYLE DESIGNATOR: SOLID, PLAIN, NO OUTSIDE FLANGES
•
CORNER SHAPE: SQUARE ALL CORNERS
•
BODY INSIDE DIAMETER: 0.2500 INCHES MINIMUM AND 0.2510 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALOIL LUBRICATING LUBRICATION
MATERIALIRON ALLOY OVERALL
NONDEFINITIVE SPEC/STD DATA2 TYPE AND B COMPOSITION
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-B-5687,COMP B MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
STYLE DESIGNATORSOLID, PLAIN, NO OUTSIDE FLANGES
OVERALL LENGTH0.2450 INCHES MINIMUM AND 0.2550 INCHES MAXIMUM IN
CORNER SHAPESQUARE ALL CORNERS
BODY INSIDE DIAMETER0.2500 INCHES MINIMUM AND 0.2510 INCHES MAXIMUM IN
BODY OUTSIDE DIAMETER0.6260 INCHES MINIMUM AND 0.6270 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
XB237-0500Interchangeable
interchangeable cross-reference
interchangeable
P280-0500Interchangeable
interchangeable cross-reference
interchangeable
MILB5687Interchangeable
interchangeable cross-reference
interchangeable
SF300-3Interchangeable
interchangeable cross-reference
interchangeable
MILB5687TYPE2C0MP0SITI0NBInterchangeable
interchangeable cross-reference
interchangeable
S409Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MILB5687TYPE2C0MP0SITI0NB?
MILB5687TYPE2C0MP0SITI0NB is a BEARING,SLEEVE.
What parts can replace MILB5687TYPE2C0MP0SITI0NB?
There are 11 known substitutes for MILB5687TYPE2C0MP0SITI0NB: XB237-0500, P280-0500, MILB5687 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MILB5687TYPE2C0MP0SITI0NB?
MILB5687TYPE2C0MP0SITI0NB is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-433-4678. 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