UNC 5/16" Hex Bolt Set Screws High Tensile 8.8 Self Colour Black
£5.05
High Tensile, UNC Hex Bolts and Hex Sets. UNC and UNF high tensile standard is marked with an, '5'. A screw is fully threaded from underneath the head and a bolt is partially threaded (has a part-plain shank/ shoulder).
