5/16" UNC diameter
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Picture shown for illustration purpose only.5/16 UNC x 1.1/4 H/T Hex Setscrew, Zinc Plated£0.21 As low as £0.135/16" UNC x 1.1/4" Grade 5 High Tensile Hexagon Head Fully Threaded Setscrew BS 1768, Zinc Plated Learn More