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PartsTable / COMPONENT / MILB5687TYPE1C0MP0SITI0NB
MILB5687TYPE1C0MP0SITI0NB ✓ 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

CONNECTOR,RECEPTACLE,ELECTRICAL. Key specifications include material: OIL LUBRICATING LUBRICATION, corner_shape: SQUARE ALL CORNERS, overall_length: 1.1250 INCHES NOMINAL IN, hardness_rating: 30.0 ROCKWELL C MINIMUM AND 70.0 ROCKWELL C MAXIMUM OVERALL, style_designator: SOLID, PLAIN, NO OUTSIDE FLANGES, body_inside_diameter: 2.0030 INCHES MINIMUM AND 2.0040 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 3120-00-522-6513, 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
MILB5687TYPE1C0MP0SITI0NB
NSN: 3120-00-522-6513
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_length1.1250 INCHES NOMINAL IN
hardness_rating30.0 ROCKWELL C MINIMUM AND 70.0 ROCKWELL C MAXIMUM OVERALL
style_designatorSOLID, PLAIN, NO OUTSIDE FLANGES
body_inside_diameter2.0030 INCHES MINIMUM AND 2.0040 INCHES MAXIMUM IN
body_outside_diameter2.3780 INCHES MINIMUM AND 2.3790 INCHES MAXIMUM IN
nondefinitive_spec/std_data1 TYPE AND A COMPOSITION OR B COMPOSITION
departure_from_cited_documentAS MODIFIED BY BODY ID AND OD
material_document_and_classificationMIL-B-5687,TY 1,COMP A OR B MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN3120-00-522-6513
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: MILB5687TYPE1C0MP0SITI0NB · 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
•
CORNER SHAPE: SQUARE ALL CORNERS
•
MATERIAL: OIL LUBRICATING LUBRICATION
•
NONDEFINITIVE SPEC/STD DATA: 1 TYPE AND A COMPOSITION AND B COMPOSITION
•
STYLE DESIGNATOR: SOLID, PLAIN, NO OUTSIDE FLANGES
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-L-11734 MIL SPEC SINGLE MATERIAL RESPONSE AND MIL-L-6085 MIL SPEC SINGLE MATERIAL RESPONSE AND MIL-L-15016, SYMBOL 2190 MIL SPEC SINGLE MATERIAL RESPONSE LUBRICATION
TECHNICAL CHARACTERISTICS (FLIS)
CORNER SHAPESQUARE ALL CORNERS
MATERIALOIL LUBRICATING LUBRICATION
NONDEFINITIVE SPEC/STD DATA1 TYPE AND A COMPOSITION AND B COMPOSITION
STYLE DESIGNATORSOLID, PLAIN, NO OUTSIDE FLANGES
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-L-11734 MIL SPEC SINGLE MATERIAL RESPONSE AND MIL-L-6085 MIL SPEC SINGLE MATERIAL RESPONSE AND MIL-L-15016, SYMBOL 2190 MIL SPEC SINGLE MATERIAL RESPONSE LUBRICATION
MATERIALCOPPER ALLOY OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-B-5687,TY 1,COMP A OR B MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
OVERALL LENGTH0.9840 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER0.8740 INCHES MINIMUM AND 0.8750 INCHES MAXIMUM IN
BODY INSIDE DIAMETER0.7500 INCHES MINIMUM AND 0.7510 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
MILB5687TYPE1C0MP0SITI0NAInterchangeable
interchangeable cross-reference
interchangeable
MILB5687TYPE1C0MP0SITI0NBInterchangeable
interchangeable cross-reference
interchangeable
A345776Interchangeable
interchangeable cross-reference
interchangeable
03-047-399Interchangeable
interchangeable cross-reference
interchangeable
A418-3Interchangeable
interchangeable cross-reference
interchangeable
GAA12565Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MILB5687TYPE1C0MP0SITI0NB?
MILB5687TYPE1C0MP0SITI0NB is a CONNECTOR,RECEPTACLE,ELECTRICAL.
What parts can replace MILB5687TYPE1C0MP0SITI0NB?
There are 19 known substitutes for MILB5687TYPE1C0MP0SITI0NB: MILB5687TYPE1C0MP0SITI0NA, MILB5687TYPE1C0MP0SITI0NB, A345776 and 16 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MILB5687TYPE1C0MP0SITI0NB?
MILB5687TYPE1C0MP0SITI0NB is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-522-6513. 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