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

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