The following table of the weights of mild-steel bolts and nuts may be found useful in the process of estimating weights of steel-work and fastenings.

The heads and nuts are hexagonal, of the usual Whitworth standard size; that is, the depth of the head is seven-eighths of the diameter of the bolt, and the depth of the nut is equal to the diameter. The dimensions of the head and nut across the flats or over the angles of the hexagon are those usually given in the published tables of sizes of Whitworth standard.

Any departure from the above proportions of head and nut will of course modify to some extent the weights given in the tables.

The table may also be used for the calculation of weights of similar bolts in other materials than mild steel by proportioning in the ratio of the specific gravities of the material used.

The length of the bolt is in all cases measured from under head to point, and the lengths have been extended to 30 inches in the table to meet the ordinary cases of long bolts used in the connection of heavy timber framing. For longer bolts, such as foundation bolts and the like, special calculations must be made, using the values of the weight of heads and nuts given at the head of the table.

The weight of washers is not included, and must be allowed for separately.

Table No. 32. The Weight Of Mild Steel Bolts And Nuts In Pounds Per Hundred. Hexagon Heads And Nuts

 Diameter of bolt. ¼" 5/16" ⅜" 7/16" ½" 9/16" ⅝" ¾" ⅞" Weight of bead and nut together per hundred. 2.83 4.48 7.53 11.71 16.61 22.82 29.4 49.7 74.5 Length in inches under head to point Weight of bolts and nuts in pounds per hundred. 1" 4.22 6.65 10.6 16.0 22.2 29.9 38.1 62.2 1¼" 4.57 7.19 11.4 17.0 23.5 31.6 40.3 65.3 1½ 4.92 7.73 12.2 18.1 24.9 33.4 42.4 68.5 100 1¾" 5.27 8.28 13.0 19.1 26.3 35.1 44.6 71.6 104 2" 5.61 8.83 13.8 20.2 27.7 36.9 46.8 74.7 108 2¼" 5.96 9.37 14.5 21.3 29.1 38.7 49.0 77.9 113 2¾" 6.30 9.91 15.3 22.3 30.5 40.4 51.1 81.0 117 2¾" 6.65 10.45 161 23.4 31.9 42.2 53.3 84.1 121 3" 7.00 10.99 16.9 24.5 33.3 43.9 55.5 87.2 125 3¼" 7.35 11.53 17.7 25.5 34.7 45.7 57.6 90.4 130 3½" 7.70 12.08 18.5 26.6 36.1 47.5 59.8 93.5 134 3¾" 8.05 12.63 19.3 27.7 37.5 49.2 62.0 96.6 138 4" 8.39 13.18 20.1 28.7 38.9 51.0 64.2 99.7 142 4¼" 8.74 13.72 20.8 29.8 40.2 52.7 66.3 102.9 147 4½" 9.09 14.26 21.6 30.9 41.6 54.5 68.5 106.0 151 4¾" 9.44 14.80 22.4 31.9 43.0 56.2 70.7 109.0 155 5" 9.78 15.35 23.2 33.0 44.4 58.0 72.8 112.0 160 5¼" 10.13 15.89 24.0 34.1 45.8 59.8 75.0 115.0 164 4" 10.48 16.43 24.8 35.1 47.2 61.5 77.1 118.0 168 5¾" 10.83 16.98 25.5 36.2 48.6 63.3 79.3 121.0 172 6" 11.18 17.53 26.3 37.2 50.0 65.1 81.5 125.0 177 6¼" 11.53 18.07 27.1 38.3 51.4 66.8 83.7 128.0 181 6½" 11.88 18.61 27.9 39.4 52.8 68.6 85.9 131.0 185 6¾" 12.22 19.15 28.7 40.4 54.2 70.3 88.0 134.0 189 7" 12.56 19.70 29.5 41.5 55.6 72.1 90.2 137.0 194 7¼" 12.91 20.24 30.2 42.6 57.0 73.9 92.4 140.0 198 7½" 13.26 20.78 31.0 43.6 58.4 75.6 94.6 143.0 202 7¾" 13.60 21.33 31.8 44.7 59.7 77.4 96.7 147.0 206 8" 13.95 21.88 32.6 45.7 61.1 79.1 98.9 150.0 211 8¼" 14.30 22.42 33.4 46.8 62.5 80.9 101.0 153.0 215 8½" 14.65 22.96 34.1 47.9 63.9 82.7 103.0 156.0 219 8¾" 15.00 23.50 34.9 48.9 65.3 84.4 105.0 159.0 223
 Diameter off bolt. ¼" 5/16" ⅜" 7/16" ½" 9/16" ⅝" ¾" ⅞" Weight of head and nut together per hundred. 2.83 4.48 7.53 11.71 16.61 22.82 29.4 49.7 74.5 Length in inches under head to point. Weight of bolts and nuts in pounds per hundred. 9" 15.34 24.05 35.7 50.0 66.7 86.2 108.0 162.0 228 9¼" 15.69 24.59 36.5 51.1 68.1 87.9 110.0 165.0 232 9½" 16.04 25.13 37.3 52.1 69.5 89.7 112.0 168.0 236 9¾" 1639 25.67 38.1 53.2 70.9 91.5 114.0 172.0 240 10" 16.73 26.22 38.9 54.3 72.3 93.2 116.0 175.0 245 10¼" 17.08 26.77 39.6 55.3 73.7 95.0 118.0 178.0 249 10½" 17.43 27.32 40.4 56.4 75.0 96.7 120.0 181.0 253 10¾" 17.78 27.86 41.2 57.5 76.4 98.5 123.0 184.0 258 11" 18.13 28.40 42.0 58.5 77.8 100.3 125.0 187.0 262 11¼" 18.48 28.94 42.8 59.6 79.2 102.0 127.0 190.0 266 11½" 18.83 29.48 435 60.7 80.6 103.8 130.0 193.0 270 11¾" 19.18 30.03 44.3 617 82.0 105.5 132.0 197.0 275 12" 19.53 30.58 45.1 62.8 83.4 107.3 134.0 200.0 279 13" 20.92 32.75 48.3 67.1 89.0 114.4 142.0 212.0 296 14" 22.31 34.92 51.4 71.3 94.5 121.4 151.0 225.0 313 15" 23.70 37.09 54.5 75.6 100.1 128.4 160.0 237.0 330 16" 25.09 39.26 57.6 79.8 105.7 135.5 168.0 250.0 347 17" 26.48 41.43 60.8 84.1 111.3 142.5 177.0 262.0 364 18" 27.87 43.60 63.9 88.3 116.8 149.5 186.0 275.0 381 19" • • • • • . 67.1 92.6 122.4 156.6 194.0 287.0 398 20" • • • • . • 70.2 96.8 127.9 163.6 203.0 300.0 415 21" • • • • • • 73.3 101.1 133.5 1706 212.0 312.0 432 22" • • • • • • 76.4 105.3 139.1 177.7 220.0 325.0 449 23" • • • • • • 79.6 109.6 144.6 184.7 229.0 337.0 466 24" • * • • • • 82.7 113.9 150.2 191.8 238.0 350.0 483 25" • • • • • • • • • • • ... •• • ... 363.0 500 26" • • • • • • • • • ... • • • • • • • • • 375.0 517 27" • • • • • • • . • ... • • • • • • • * • 388.0 534 28" • • • • • • ... • • • • • • • • • • • • 400.0 551 29" • • • • • ... ... • • • • • . • • 413.0 568 30" ... ... ... •• . ... ... • • • 425.0 585

Table Of The Weight Of Mild Steel Bolts And Nuts In Pounds Per Hundred. Hexagon Heads And Nuts

 Diameter of bolt. 1" 1⅛" 1¼" 1⅜" 1½" 1⅝" 1¾" 1⅞" 2" Weight of head and nut together per hundred. 106 148 195 251 324 403 495 600 725 Length in inches under head to point. Weight of bolts and nuts in pounds per hundred. 2" 149 204 2¼" 155 212 273 347 2½" 161 219 281 357 450 549 2¾" 167 226 290 368 462 564 682 3" 173 233 299 378 474 579 699 835 992 3¼" 178 240 308 389 487 593 716 855 1014 3§" 184 247 316 400 500 608 733 875 1036 3¾" 189 254 325 410 512 623 750 894 1058 4" 195 261 334 420 524 638 768 913 1081 4¼" 200 267 342 431 537 653 785 933 1103 4½" 206 274 351 441 549 667 802 952 1125 4¾" 212 281 360 451 562 682 819 972 1148 5* 217 288 368 461 575 697 836 991 1170 5¼" 223 296 377 472 588 712 853 1011 1192 5½" 228 303 386 483 600 726 870 1031 1214 5¾" 234 310 395 493 612 741 887 1050 1236 6" 239 317 404 504 624 756 904 1069 1259 6¼" 245 324 412 515 637 771 921 1089 1281 6½" 251 331 421 526 650 785 938 1109 1304 6¾" 256 338 429 536 663 800 955 1129 1326 7" 262 345 438 546 676 815 972 1148 1348 7¼" 267 352 447 557 688 830 989 1168 1370 7½" 273 359 455 567 700 844 1006 1187 1393 7¾" 278 367 464 578 712 859 1023 1207 1415 8" 284 373 473 588 724 873 1040 1226 1437 8¼" 289 380 481 598 737 888 1057 1245 1459 8½" 295 387 490 609 749 903 1074 1265 1482 8¾" 301 394 499 620 762 918 1091 1284 1504 9" 306 401 508 630 774 932 1108 1304 1526 9¼" 312 408 517 641 787 947 1125 1323 1548 9½" 318 416 525 651 800 962 1142 1343 1571 9§" 323 423 534 662 812 977 1159 1363 1593 10" 329 430 542 672 825 991 1176 1382 1615 10¼" 334 437 551 683 838 1006 1193 1402 1637
 Diameter of bolt. 1" 1⅛" 1¼" 1⅜" 1½" 1⅝" 1¾" 1⅞" 2" Weight of head and nut together per hundred. 106 148 195 251 324 403 495 600 725 Length in inches under head to point. Weight of bolts and nuts in pounds per hundred. 10½" 340 444 559 694 850 1021 1210 1421 1659 10¾" 345 451 568 704 863 1035 1228 1441 1681 11" 351 458 577 714 875 1049 1245 1460 1704 11¼" 356 465 586 725 887 1064 1262 1480 1726 11½" 362 472 595 736 900 1079 1279 1499 1748 ll¾" 367 479 603 746 913 1094 1296 1519 1770 12" 373 486 612 756 925 1108 1313 1539 1793 13" 395 514 646 799 975 1168 1381 1617 1882 14" 418 542 681 841 1024 1227 1449 1695 1971 15" 440 570 716 883 1074 1285 1517 1774 2060 16" 462 598 751 925 1124 1343 1585 1852 2149 17" 484 627 786 967 1175 1403 1654 1930 2238 18" 507 655 821 1008 1225 1461 1722 2008 2327 19" 529 683 855 1051 1274 1520 1790 2087 2416 20" 551 711 890 1093 1325 1578 1858 2165 2505 21" 574 739 925 1135 1374 1637 1926 2243 2595 22" 596 767 960 1177 1425 1696 1994 2321 2684 23" 618 796 995 1219 1474 1754 2062 2399 2773 24" 640 824 1029 1261 1525 1813 2130 2477 2861 25" 662 852 1064 1303 1575 1872 2198 2555 2950 26" 684 880 1098 1345 1625 1931 2266 2633 3039 27" 707 908 1133 1387 1675 1990 2334 2711 3128 28" 729 936 1168 1429 1725 2048 2402 2790 3217 29" 751 964 1202 1471 1775 2107 2470 2868 3306 30" 774 993 1237 1513 1826 2166 2539 2947 3395