... Inchesmm3/16" 5 0.9 1,200 1/4 " 6 1.6 2,200 5/16" 8 2.5 3,400 3/8 " ... 4,900 7/16" 11 4.9 6,600 1/2 " 12 6.3 8,500 9/16" 14 8 ... 1- 5/16" 32 45.0 58,000 1- 1/2 " 36 58.0 74,000 1- 5/8 " 40 ... /4 " 42 42 85.0 106,000 2 " 48 102.0 126,000 2- 1/8 " 50 119.0 145,000 ... 2- 1/4 " 56 138.0 166,000 2- 1/2 " 60 159.0 189,000 2- 5/8 " ... 64 181.0 213,000 2- 3/4 " ...