Our finish, or often called cup washers are 651 Silicon Bronze alloy and make a great addition to their corresponding screw sizes for that clean, finished look. They not only look good, unlike many others that simply have a "bronze finish" and are plated in bronze, ours are solid silicon bronze and the right choice for a lasting finish.
Our flat, and oval head screws have a countersunk 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) |