Special fasteners are non-standard and custom-made bolts, nuts, screws, and fixings that can be produced by modifying an existing fastener, keeping costs and lead times to a minimum. If you need a standard bolt, nut, or screw with a non-standard head diameter, thread length, or pitch, you can get it modified or custom-made. The screws can be modified to your requirements, including screw cutting for unusual lengths and pinning for unusual security screws such as security grub screws, security socket cap screws, or security screws of non-standard lengths. Special purpose fasteners are another type of special fastener that are sometimes lighter than solid shank rivets, yet strong enough for their intended use. These fasteners are manufactured by several corporations and have unique characteristics that require special installation tools, special installation procedures, and special removal procedures.