Product details : DORMER E5471.1/4NO1 TAP 1.1/4 INCH X 11 5976365
HSS-E Machine thread-cutters for gas thread uncoated ISO 2284 shape C straight grooves 1.5xD blind and continual holes for general use in steel <1200 N/mm². Cast iron. Copper and brass. Aluminium alloys. Duraplastics and fibre-reinforced plastics.