Allen key sizes: M8=6mm key. High tensile grade 12.9 Socket Cap Screws for use where strength is of high importance. Lets bring things together.
M8 ( 8mm ) High Tensile 10.9 Socket Button Head Screws Black Self Colour Bolts
M8 ( 8mm ) High Tensile 10.9 Socket Countersunk Screws Black Self Colour Bolts
M8 ( 8mm ) Black Self Colour 12.9 High Tensile Socket Cap Screws Allen Bolts HT
M8 (8mm) SET SCREWS FULLY THREADED BOLT GRADE 8.8 HIGH TENSILE ZINC PLATED STEEL
M8 (8mm) COUNTERSUNK SCREWS ALLEN KEY SOCKET BOLTS HIGH TENSILE 10.9 ZINC PLATED
M8 (8mm) SET SCREWS FULLY THREADED BOLT GRADE 8.8 HIGH TENSILE ZINC STEEL 933