The Hillman Group 300324 3/4 In.Split Lock Washer Grade 8, 20-Pack Product Description Hardened. Yellow dichromate. Grade 8. 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 Hardened. Yellow dichromate. Grade 8 Country Of Origin: China From The Brand Name: Hillman Model Number: 300324 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.