20 3 1 4 x 5 July 8, 2019 16 32 64 128 3 20 x =- 4 5 1 10 1 4 20 x 5 16 3 prong t nuts 2x 1 3 x 4 2 5x 20 6 1 2 20 x 1 3 4 grade 5 carriage bolt 3 2x 4 )= 5 x 1 )- 20 20 1 4 in x 11 3 8 in x 5 11 16 in 20 x 3 1/5