Silicon Bronze Cup / Finish Washers

Our finish, or often called cup washers are a solid 651 Silicon Bronze alloy and make a great addition to their corresponding screw sizes for that clean, finished look. They not only look good, most others simply have a "bronze finish" and are plated in bronze, ours are solid silicon bronze and the right choice for a long lasting finish. Our flat, and oval head screws have a countersunk (CSK) head that fits nicely in the cup of these washers. Size Inner Diameter Outer Diameter Height #6 0.185" (4.7mm) 0.447" (11.4mm) .0875" (2.2mm) #8 0.185" (4.7mm) 0.525" (13.4mm) 0.010" (2.5mm) #10 0.243" (6.1mm) 0.589" (14.9mm) 0.120" (3.0mm) #12 0.300" (7.6mm) 0.685" (17.4mm) 0.143" (3.6mm) 1/4" 0.318" (8.1mm) 0.775" (19.7mm) 0.128" (3.25mm)