Patent ID: 8631724
Filing Date: 2014-01-21
Classification: B25B

Abstract:
1. A fastening socket, comprising: an inner socket portion including engaging means for engaging a nut or a bolt head; and an outer socket portion for engaging a washer with an outer edge portion which includes a tapered surface and engaging teeth, the tapered surface being gradually inclined outwardly and toward a bottom surface of the outer edge portion, wherein the inner socket portion is disposed inside the outer socket portion, the inner socket portion and the outer socket portion are coupled together with a mechanism that allows the inner socket portion and the outer socket portion to be cooperatively and relatively rotated in opposite directions, and wherein the outer socket portion is provided with engaging claws for engaging the engaging teeth of the washer, and each of the engaging claws is provided with a tapered tip end surface, which is gradually inclined radially inwardly and toward a base end side of the outer socket portion.