Roller Chain Trade Size
    Roller Chain Trade Size
    BL434
    BL534
    BL634
    BL646
    Pitch
    Pitch
    default
    1/2"
    5/8"
    3/4"
    Lacing
    Lacing
    3 × 4
    4 × 6
    Overall Width
    Overall Width
    43/64"
    25/32"
    1 1/32"
    1 27/64"
    Pin Diameter
    Pin Diameter
    0.200"
    0.234"
    0.312"
    REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)
    REACH (Registration,
    Evaluation, Authorization
    and Restriction of Chemicals)
    REACH Compliant
    RoHS (Restriction of Hazardous Substances)
    RoHS (Restriction of
    Hazardous Substances)
    RoHS Compliant
    DFARS (Defense Acquisition Regulations Supplement)
    DFARS (Defense Acquisition
    Regulations Supplement)
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    4 Products