M4 x 16mm Low Head Socket Cap Screws (DIN 7984) - High Tensile 10.9 Self Colour Metric Low Head Socket Cap Screws feature an internal socket drive and are fastened with a Hexagonal\/Allen key. Due to this they are very versatile and easily accessible as the internal drive allows for a smaller head diameter than seen on other machine screws. Low Head Socket Cap Heads have a reduced head height, making them ideal for low clearance environments. These Low Head Cap Screws are made from 10.9 High Tensile Steel. For larger quantities or items not listed, please email and one of our team will provide you with a quotation. M4 x 16mm Low Head Socket Cap Screws (DIN 7984) - High Tensile Steel 10.9 Self Colour