Wing nuts can be easily tightened and loosened by hand, though pliers may be used to tighten further if needed. They are great for use on types of equipment where parts may need to be frequently changed out (cymbals on drum kits for example). Another common use is fixtures at trade shows that need to be set up and taken apart quickly and frequently. Size: #12-24Features two easy to grip "wings" that allow it to be tightened by handUsed on a bolt of the same diameter or thread size. In some applications a flat washer is recommended between the wing nut and the item it is attaching to.Great for use in applications where frequent adjustments are neededAllows for easy assembly and disassembly of fixtures or equipmentThread Type: Coarse, Thread Class: UNC-2BSpecification(s) Met: ASME B18.6.9 & ASME B1.1