5/16" UNF diameter
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Picture shown for illustration purpose only.5/16 UNF x 1/2 H/T Hex Setscrew, Zinc Plated£0.13 As low as £0.085/16" UNF x 1/2" Grade 5 High Tensile Hexagon Head Fully Threaded Setscrew BS 1768, Zinc Plated Learn More