Brass Cup Washers No.6 (Pack of 13)

A screw cup washer enables the screw head to sit flush inside the washer providing a neat finish without the need to countersink the material. Made from pressed brass They are normally used with csk screws to leave a decorative, neat finish with no sharp edges. Their second use is like most washers, to spread the load from the screw head over a wider area, preventing damage of the surface being screwed into. Leaving a very aesthetically pleasing finish Dimensions No.6 - internal diameter 4.5mm, external diameter 11.3mm