Need Help? Get in touch, 24/7
We're committed to providing the best customer service in the industry.

Black Box Brand Product Support 
Local Calls: 0800 653 219                                  
International Calls: +61 3 9237 8100                                     

Or click "Talk With Us" in our top nav to chat with us or to have us call you.

Screw Dimensions

Find the right screw length for your cabinet or rack.

Types of Screws


There are two basic kinds of screws used for cabinets and racks—panhead screws and countersunk screws—and they’re measured in two different ways. Because the standard way to measure is from the tip of the business end of the screw to where the screw rests on the material it’s fastened to, a panhead screw is measured to the bottom of its head, whereas a countersunk screw is measured to the top of its head.