For historical reasons, nails are sold both by a number followed by d and (less confusingly) by length. The “d” stands for penny, so 8d refers to an 8-penny nail, 16d to a 16-penny nail and so on.

Not Choosing The Right Gauge And Nail Size For The Material You're Working With Beyond the different motor types, there are also different nail sizes. This nail gauge should also be closely ...