Simpson CJT3ZS Concealed Joist Tie w/Short Pins and SDS Screws, ZMAXSimpson Strong Tie CJTZ Concealed Joist Ties are designed to create a strong, concealed connection between a header post and a beam. There are three preferred methods for installation: No routing of header post or beam, routed header post, or a routed beam. The package includes all necessary steel pins and Strong Drive SDS Heavy Duty Connector Screws, and features a ZMAX coating, giving it greater corrosion resistance than a standard galvanized