Zinc Plated Internal and Extrenal Tooth Lock Washer Assortment in Plastic Carrying Case (520-Pieces)

Internal and external tooth lock washers are designed to prevent a nut or bolt head from loosening with the strut action set up by the teeth. The teeth also absorb shock and vibration. The teeth also slightly scrape the grounding surface when used in grounding applications to improve the electrical connection.|Assortment contains the following sizes and quantities of external tooth lock washers zinc plated: #6 50 pcs #8 50 pcs #10 50 pcs 1/4 50 pcs 5/16 35 pcs 3/8 25 pcs|Assortment contains the following sizes and quantities of internal tooth lock washers zinc plated: #6 50 pcs #8 50 pcs #10 50 pcs 1/4 50 pcs 5/16 35 pcs 3/8 25-pieces|Material: steel zinc plated|Clear plastic carrying case for easy storage