Mild steel screws with a “V” shaped countersunk head and a single slot recess, common in sizes up to M8, also available in stainless and brass.
Follow the link below to view our full stock range.
https://arunfasteners.co.uk/stock-range/screws/machine-screws/unc-machine-screws/unc-csk-slotted-machine-screws/