We stock a full line of Silicon Bronze fasteners. The specifcations are as follows: 98% COPPER 1.6% SILICA .4% MANGANESE This is typically called CDA alloy 651. These fasteners are excellent for use where the fastener is exposed to weather or along the water line. Available in screws, bolts and ring shank nails. Click on the items below for pricing. Silicon Bronze Nails ©2008 Public Lumber Company. All rights reserved.