ThreadDiam Pitch HoleDiam G DESC_IN_DRAFTING 9,728mm 0,907mm 8,800mm G 1/8" 13,157mm 1,337mm 11,800mm G 1/4" 16,662mm 1,337mm 15,250mm G 3/8" 20,995mm 1,814mm 19,000mm G 1/2" 22,911mm 1,814mm 21,000mm G 5/8" 26,441mm 1,814mm 24,500mm G 3/4" 30,201mm 1,814mm 28,250mm G 7/8" 33,249mm 2,309mm 30,750mm G 1" 37,897mm 2,309mm 35,300mm G 1 1/8" 41,910mm 2,309mm 39,250mm G 1 1/4" 44,323mm 2,309mm 41,700mm G 1 3/8" 47,803mm 2,309mm 45,250mm G 1 1/2" 53,746mm 2,309mm 51,100mm G 1 3/4" 59,614mm 2,309mm 57,000mm G 2" 65,710mm 2,309mm 63,100mm G 2 1/4" 75,184mm 2,309mm 72,600mm G 2 1/2" 81,538mm 2,309mm 78,900mm G 2 3/4" 87,884mm 2,309mm 85,300mm G 3" 93,980mm 2,309mm 91,500mm G 3 1/4" 100,330mm 2,309mm 97,700mm G 3 1/2" 106,680mm 2,309mm 104,00mm G 3 3/4" 113,030mm 2,309mm 110,400mm G 4"