Parker 51 Series Ferrul-Fix Field Attachable Fittings

    This page is for reference only. The 51 Series Fittings are now bein phased out and replaced by Series 51R. 

    Parker 21151 Field Attachable Fittings

    Ferrul-Fix

    Parker 51 series 21151 fitting

    For available sizes, refer to the table below. 

     

    Steel
    Part
    Number

    B

    C

    Thread
    Size

    Tube
    O. D.

    Hose
    I.D.

    A

    Cutoff
    Allow.
    B

    H
    Hex

    J
    Hex

    W
    Hex

    Hose Fitting

     

     

     

    inch

    inch

    inch

     

    inch

    mm

    inch

    inch

    inch

    21151-6-6

    +

    +

    9/16-18

    3/8

    3/8

    2.50

    64

    1.25

    32

    3/4

    11/16

    7/8

    21151-8-8

    +

    +

    3/4-16

    1/2

    1/2

    2.96

    75

    1.50

    38

    7/8

    7/8

    1-1/16

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