Coupling stock are the raw material used to made the coupling for casing, tubing or sucke rods Coupling Stock for Casing Nominal OD, Inches Thread Type Nom. Wall Llbs/ Ft FBS Casing Coupling Stock 4-1/ 2 5.000 Short Long Buttress Non-API .466 .479 .443 .617 22.59 23.1 5 21.58 28.91 4.185 4.162 4.225 3.920 5 5.563 Short Long Buttress .507 .529 .483 27.40 28.47 26.23 4.675 4.638 4.718 5-1/ 2 6.050 Short Long Buttress Non -API .500 .526 .477 .727 29.66 31.06 28.42 41.37 5.175 5.130 5.215 4.778 6-5 / 8 7.390 Short Long Buttress .635 .662 .607 45.85 47.61 44.01 6.278 6.232 6. 328 7 7.656 Short Long Buttress Non-API .573 .603 .552 .950 43.39 45.46 41.9 2 68.10 6.653 6.600 6.690 5.994 7-5/ 8 8.500 Short Long Buttress Non-API .706 .735 .683 .875 58.82 61.01 57.07 71.32 7.265 7.214 7.305 6.969 8-5/ 8 9.625 Short Long Buttress Non-API .781 .826 .760 .900 73.84 77.69 72.02 83.94 8.25 8 8.180 8.295 8.050 9-5/ 8 10.625 Short Long Buttress Non-API Non-API .781 .8 29 .760 1.125 1.146 82.19 86.81 80.15 114.25 116.12 9.258 9.175 9.295 8.656 8.620 10-3/ 4 11.750 Short Buttress Non-API .786 .759 1.049 92.12 89.18 120.0 0 10.375 10.422 9.914 11-3/ 4 12.750 Short Buttress .786 .763 100.53 97.77 11 .375 11.415 13-3/ 8 14.375 Short Buttress Non-API .786 .760 .980 114.18 110.6 1 140.33 13.000 13.045 12.660 16 17.000 Short Buttress Non-API Non-API .803 .833 1.000 1.265 139.04 143.96 171.04 212.78 15.594 15.543 15.250 14.786 18- 5/ 8 20.000 Short Buttress Non-API Non-API Non-API Non-API 1.018 1.048 .990 1 .125 1.250 1.281 206.57 212.32 201.18 227.00 250.55 256.34 18.219 18.166 18. 268 18.031 17.813 17.758 20 21.000 Short Buttress Non-API Non-API .803 .834 1.125 1.260 173.37 179.79 239.02 265.89 19.594 19.541 19.031 18.795 Coupling Stock for Tubing Nominal OD, Inches Thread Type Nom. Wall Llbs/ Ft FBS Tubing Coupling Stock 2-3/ 8 2.875 3.063 2.875 API NUE API EUE Buttress .411 .425 .429 10.82 11.97 11.21 2.155 2.320 2.125 2-7/ 8 3.500 3.668 3.500 API NUE API EUE Buttress .498 .490 .500 15.97 16.63 16.02 2.628 2.810 2.625 3-1/ 2 4.250 4.500 4.250 API NUE API EUE Buttress .561 .600 .571 22.10 24.99 22.44 3.268 3.450 3.250 4 5.000 API EUE .605 28.40 3.942 4-1/ 2 5.200 5.563 5.200 API NUE API EUE Buttress .578 .645 .560 28.53 33.88 27.75 4.188 4.435 4.220