Nuts & Bolts PRO

Nuts & Bolts is a simple application to look up screw sizes. It provides screw diameters, screw head dimensions, tap drill sizes, and clearance holes for standard sizes #0 to 1" and metric sizes M1. 4 to M24. A simple interface allows you to cycle through sizes and screw types OR tap any dimension to quickly jump to the size you want. Screw head types include: Pan. Button.