Ansen Tools AN 231 Spring and Star Washer Assortment, 720 Piece External tooth lock washers: 50 pieces each #6 #8 #10 Larger external tooth lock washers: 40 pieces 1/4" 30 pieces 5/16" and 20 pieces 3/8" Spring lock washers: 50 pieces each #6 #8 #10 Larger spring lock washers: 40 pieces 1/4" 30 pieces 5/16" and 20 pieces 3/8" Internal tooth lock washers 50 pieces each #6 #8 #10 40 pieces 1/4" 30 pieces 5/16" and 20 pieces 3/8"