P&N — a trusted Australian cutting tools brand manufacturing files, drill bits, countersinks, taps and dies, hole saws, rotary burrs, and precision measuring tools for tradespeople, engineers, and industrial operations across the country. P&N countersink bit — Tungsten Carbide (TCT). Cuts clean 90° countersunk recesses for flush-fitting fasteners in timber, aluminium, mild steel, and composite materials. Where this product is used Countersink bits are used in joinery, cabinet making, automotive, and general metalwork for recessing fasteners flush with the surface. Countersinking screw holes in timber for flush fastener seating in joinery Preparing fixing holes in aluminium and mild steel for flush-head screws Deburring and chamfering drilled holes in sheet metal and fabricated parts Key specifications Material / Construction Tungsten Carbide (TCT) Selecting the right option For timber and soft materials, carbon steel rose countersinks are economical. For steel and harder materials, choose an HSS or CRV multi-flute countersink. For production countersinking, a TCT bit lasts longest.