PURPOSE: To reduce working force, and save resources by reuse of materials by reducing a flaw inflicted on wood or the like of its defect and labor to drive a nail pulling-out nail puller in the wood or the like though its nail puller driving-in labor at nail pulling-out time and the flaw inflicted on the wood or the like at driving-in time are caused.

CONSTITUTION: A nail having a driving preventive washer is formed in such a way that a nail driving preventive washer 2 is arranged under a head of a nail main body 3, and the nail main body 3 cannot be driven by a certain degree or more, and a nail head 1 of is exposed above, and when the nail main body 3 is pulled out by a nail puller 6, a nail puller is simply hitched on the its exposed nail head 1, and a nail can be simply pulled out.