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Carriage bolts have a round smooth head with no drive and a square shank immediately underneath the rounded head that sinks into the material being fastened to secure the bolt from turning after installation with nuts and sometimes washers.  Carriage bolts are coarse thread (UNC) bolts used for safety and security, are sometimes referred to as carriage screws, and are available in zinc plated, stainless steel, and galvanized.

Find a variety of hex bolts at Crouch Sales.

We stock hex bolts in grade 8, stainless steel, grade 5, galvanized, A325, brass, and nylon. 

Sheet metal screws also known as Self Tapping Screws.  Sheet metal screws zinc plated are threaded from the head down to a sharp point on the end and are usually used with a pre-drilled hole.  Sheet metal screws or tapping screws are available in phillips and slotted drive and in several head styles including flat head sheet metal tapping screws, hex head sheet metal tapping screws, oval head sheet metal tapping screws, pan head sheet metal tapping screws and truss head sheet metal tapping screws.

Stainless Steel Sheet metal screws also known as Stainless Steel Tapping Screws.  Stainless sheet metal tapping screws are threaded from the head down to a sharp point on the end and are usually used with a pre-drilled hole and are available in several head styles such as flat head (countersunk), oval head (countersunk), pan head, and truss head with a phillips drive including stainless flat head sheet metal tapping screws, stainless oval head sheet metal tapping screws, stainless pan head sheet metal tapping screws, and stainless truss head sheet metal tapping screws.  

For pricing on LARGE QUANTITIES of any Self-Tapping Sheet Metal Screws at Crouch Sales REQUEST A QUOTE.