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    7 Products

    Clamping Screw Mounting Bases

    Image of Product. Front orientation. Contains Annotated. Clamping Screw Mounting Bases. Clamping Screw Mounting Bases.
    Use mounting bases to attach screw clamps to flat surfaces. Their threaded portion is machined at a slightly downward angle so the clamp can get a strong grip on the workpiece. Length is measured from under the screw collar.
    Mounting Hole
    Thread
    Size
    Lg.
    Wd.
    Ht.
    Material
    No.
    of
    Dia.
    Ctr.-to-Ctr.
    Each
    1/4"-20
    		1 1/2"7/16"1 1/8"Steel27/32"1 1/8"90747A110000000
    3/8"-16
    		2"5/8"1 3/8"Steel21/4"1 7/16"90747A12000000
    1/2"-13
    		2 3/8"3/4"1 3/4"Steel23/8"1 11/16"90747A13000000
    5/8"-11
    		3"1"2 1/4"Steel27/16"2 1/8"90747A14000000

    Revolving Clamping Screw Mounting Bases

    Image of Product. Front orientation. Contains Annotated. Clamping Screw Mounting Bases. Revolving Clamping Screw Mounting Bases.
    Mount the clamp in a threaded hole or on a mounting base.
    Mounting Hole
    For Clamp Mounting
    Screw Thread Size
    Lg.
    Wd.
    Ht.
    Material
    No.
    of
    Screw
    Size
    Ctr.-to-Ctr.
    (A)
    Ctr.-to-Ctr.
    (B)
    Each
    5/16"-18
    		1 7/16"1"1 1/2"Steel5No. 10
    		3/4"1"3083N14000000
    1/2"-13
    		2 1/4"1 1/4"2 1/4"Steel51/4"
    		1 1/8"1 3/8"3083N1500000
    5/8"-11
    		2 1/4"1 1/4"2 1/4"Steel53/8"
    		1 1/4"1 1/2"3083N1600000
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