Prime-Line S 4573 Mailbox Lock &ndash; Replace Damaged or Missing Mailbox Locks, 90 Degree Rotation, Opens Counter-Clockwise, National Keyway, Nickel Finish REPLACEMENT PART  Use this mailbox lock to quickly and easily replace damaged or missing mailbox locks. It has 90-degree rotation and opens counter-clockwise. INCLUDES  This mailbox lock comes with a spring steel locking clip, a threaded body and a nut for optional cam attachment. REPLACES  This mailbox lock can replace a variety of original manufacturers locks, including American, Florence, Miami- Carey, Bommer, and Auth. It is 9/32 long with 1-3/32 bolt throw, 5/16 locking depth and 15/16 reach. EASY INSTALLATION  Installation is quick and easy and all parts are included! It makes a great weekend DIY project. DURABLE, STRONG CONSTRUCTION  With a diecast cylinder construction, brass pins and nickel plated face, this mailbox lock is strong and built to last.