Screw Head Design

Flat head (Countersunk) 

This is the most common, it is used for general work and has the widest range of sizes. It is the bread and butter line of screws and allows the screw to be sunk into the timber or fitting for a flat surface. The Particle Board version has four lugs under the head and will self countersink in fibre boards.   

Pan Head

These provide a flat bearing surface under the head and protrude above the surface. They have a rounded profile which stands up above the surface. They are often used for attaching metal fittings.  

Round Washer Head

This is an extension of the Pan head, the head has a washer formed under the head to give a larger bearing area to minimise the screw sinking into the surface and give larger adjustment on slotted holes. The Super Round Washer is a special version which has a larger washer and is designed for fitting drawer fronts, the head is 12mm diameter and allows maximum adjustment. The length is designed for two 16 mm thickness of particle board.   

Truss Head

Another version of the Pan head, it is larger in diameter and has a lower profile. The look very neat and are smoother and flatter than the pan. They are ideal for slotted holes.    

Trim Head   

Also known as "Architrave screws" these have a special small diameter head designed to bury into the timber allowing the head to be covered with filler. Basically they are a #7 gauge screw with a #4 gauge head but use a #1 Power driver bit. They are ideal for fitting detailed architrave’s as they avoid the risk of damaging the contours. The screw is driven in so the head is just below the surface and a small dob of filler is wiped into the hole making it almost invisible. With the small diameter head care needs to be taken when driving as it can split under high torque.