M4 / M5 / M6 / M8 / M10 Countersunk Socket Screws – High Tensile Grade 10.9 (Allen Key CSK Bolts). Countersunk Bolts. Head Type: Countersunk (CSK). Sizes Available: M4 × 0.7mm, M5 × 0.8mm, M6 × 1.0mm, M8 × 1.25mm, M10 × 1.5mm.
eBay