BSW THREADS AS PER BS 916/53
APPROXIMATE WEIGHT IN KGS FOR 100 NOS
DIAMETER
1/4" 5/16" 3/8" 7/16" 1/2" 5/8" 3/4" 7/8" 1" 1.1/8" 1.1/4" 1.1/2" 1.3/4" 2"  
3/4" 1.111                          
1" 1.252 2.041 3.123 4.95                    
1.1/4" 1.401 2.281 3.458 5.388 7.692 13.966                
1.1/2" 1.556 2.523 3.797 5.875 8.306 14.925 23.81 29.24            
1.3/4" 1.705 2.762 4.132 6.329 8.897 15.924 25.253 31.056 45.045          
2" 1.864 3.003 4.468 6.793 9.506 16.949 26.882 32.68 47.619          
2.1/4" 2.005 3.245 4.826 7.246 10.121 17.921 28.249 34.483 50.505 70.423        
2.1/2" 2.159 3.484 5.144 7.704 10.707 18.868 29.762 36.765 52.632 73.529 98.039 156.25 227.273 312.5
3" 2.459 3.965 5.814 8.621 11.933 20.921 32.468 40.323 56.818 79.365 106.383 166.667 250 333.333
3.1/2" 2.762 4.444 6.485 9.542 13.123 22.831 35.714 43.86 60.976 84.746 113.636 178.571 250 333.333
4" 3.075 4.926 7.153 10.46 14.327 24.876 38.462 48.544 66.667 90.909 119.048 185.185 277.778 357.143
4.1/2" 3.367 5.405 7.813 11.364 15.528 26.882 40.984 51.546 69.444 98.039 128.205 192.308 277.778 384.615
5" 3.655 5.903 8.475 12.285 16.779 28.902 43.86 54.945 76.923 102.041 135.135 208.333 294.118 384.615
5.1/2" 3.946 6.386 9.141 13.158 17.921 30.864 47.17 58.824 81.967 108.696 147.059 227.273 333.333 416.667
6" 4.237 6.868 9.804 14.085 19.157 32.68 50.505 63.291 86.207 116.279 156.25 238.095 357.143 416.667
7"         20.833 34.722 53.763 73.529 96.154 128.205 172.414 250 384.615 500
8"         23.585 38.462 58.14 79.365 106.383 142.857 185.185 277.778 416.667 555.556
9"         25.907 42.735 64.935 87.719 116.279 156.25 200 312.5 454.545 555.556
10"         28.736 47.619 71.429 96.154 125 166.667 217.391 333.333 454.545 625
11"         31.25 50.505 75.758 104.167 135.135 178.571 238.095 357.143 500 714.286
12"         33.557 53.763 80.645 113.636 147.059 192.308 250 384.615 555.556 714.286
14"         38.462 60.976 92.593 125 166.667 217.391 277.778 416.667 625 833.333
16"         43.478 68.493 104.167 142.857 185.185 238.095 312.5 500 714.286 1,000.00
18"         48.544 76.923 113.636 156.25 208.333 263.158 333.333 555.556 714.286 1,000.00
20"         53.763 84.746 125 172.414 227.273 294.118 384.615 625 833.333 1,250.00