Hillman 811059 1/2" Split Lock Washer, Galvanized, 100 Product Description Hot dipped galvanized. Suitable for use in treated lumber. Hardened. Packages of 100-pieces. From the Manufacturer This split lock washer provides a circular bearing surface with offset split ends which help bite into the mating material to provide a locking feature when tightened beneath a nut. It is round with a hole in the center and can be used where loosening from corrosion or vibration is a concern. Lock washers are commonly used in any application using a bolt where two pieces are being drawn together. Features Item Weight: 0.0 lb Country of Origin: China Brand name: Hillman Item Dimensions: 3.1"L x 2.9"W x 2.1"H USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.