Specifications: Grade 5 Includes the following: Contains 108 pieces 10 of 3/8"-24 x 1 1/2" 4 of 3/8"-24 x 2 1/2" 10 of 3/8"-24 x 1 3/4" 5 of 3/8"-24 x 1" 7 of 3/8"-24 x 2 1/4' 10 of 3/8"-24 x 1 1/4" 8 of 3/8"-24 x 2" 54 of 3/8" lock washers