M4 M5 M6 M8 Clamping Thumb Screws Tee Wing Knob Head Hand Grip Bolts Butterfly Plastic Black Thumbscrew. - Thread Size: M4 ( Pitch 0.7mm ); M5 ( Pitch 0.8mm ); M6 ( Pitch 1.0mm ); M8 ( Pitch 1.25mm ).
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