Home / Screws, Nuts & Washers / Socket Screws / Socket Button Head Screws / UNF Socket Button - ANSI B18.3 / UNF Socket Button Head Screws - High Tensile Steel / 6-40 UNF Socket Button Head Screws 6-40 UNF Socket Button Head Screws Sort: Most popularWhat's newPrice low to highPrice high to lowName A to ZName Z to A 2 Products Sort 6-40 UNF x 3/8" Socket Button Head Screws (ANSI B18.3) - High Tensile Steel Self Colour £0.18 6-40 UNF x 3/8" Socket Button Head Screws (ANSI B18.3) - High Tensile Steel Self Colour £0.18 View Product Add to cart Quickview 6-40 UNF x 1/2" Socket Button Head Screws (ANSI B18.3) - High Tensile Steel Self Colour £0.24 6-40 UNF x 1/2" Socket Button Head Screws (ANSI B18.3) - High Tensile Steel Self Colour £0.24 View Product Add to cart Quickview