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astm a325 structural bolts

ASTM F3125 Grade A325 Anchor Bolt and ASTM A325 Type 3 Stud Bolt manufacturer in India

Buy any size or thread of ASTM A325 Type 1 Allen Bolts, Nut, Screw, Washer and A325t Hex Head Bolt at best price in Mumbai

Detailed Information

Prashaant Steel & Alloys is a leading producer of ASTM A325 Structural Bolts and a high-calibre retailer. Thanks to their excellent resistivity properties, the ASTM A325 Structural Bolts that we manufacture are extremely popular in the industry. We are considered to have the excellent quality of ASTM A325 Structural Bolts at Prashaant Steel & Alloys, which is why we use the highest quality of the raw materials used in the production processes. The ASTM A325 Structural Bolts provide outstanding resistance to corrosion and oxidation, which opens its doors to a wide range of applications. 

A tension control bolt (TCB Bolt) or a A325 Structural Bolts is a heavy duty fastener that is used in steel frame construction. The head is  of the tension control bolt is usually constructed in the shape of a dome. This dome shaped head is the reason why it can’t be driven.

The end of the shank on the A325 Bolt has a spline on it. A spline is a built in tension control device that ensures the optimum tension levels have been achieved with each installation.  This spline, added by the ASTM A325 Structural Bolts Manufacturers  is known to be engaged by a special power wrench. This in turn prevents the A325 Galvanized Bolts from turning while the nut is  being tightened. The spline shears off, when the appropriate torque has been achieved. The snapping off of the spline is a visual confirmation that the proper tension has been achieved as well as the installation has been done correctly.

The A325 Anchor Bolt Faster to install than conventional nuts and bolts. The ASTM F1852 specification covers 2 types of heat treated steel tension control bolt-nut-washer assemblies. These assemblies, referred to as “sets” are capable of developing a minimum predetermined tension during installation by the application of torque to the nut. At the same time, a counter torque can be applied in order to separate the spline end from the body of the bolt  with the help of an appropriate spline drive installation tool.

The minimum tensile strength for the alloy of ASTM F1852 standard ranges between 830 Mpa to 1040 Mpa. The specification of the ASTM A325 Bolts standard was implemented in  2016, after withdrawing the A325. Thus, making path for a new standard.

A325 Tension Control Bolts specification covers 2 kinds of quenched and tempered steel heavy hex structural bolts. The minimum tensile strength of the ASTM F3125 Grade A325 Tension Control Bolt Material is about 120 Ksi for sizes 1” and less while the strength  for sizes over 1” to 11/2 is around 105 Ksi.

ASTM A325 Structural Bolts Specifications

Manufacturer of A325 Galvanized Bolts and ASTM F3125 Grade A325 Type 1 Heavy Hex Bolts in Metric and imperial, check weight, tensile strength and dimensions

ASTM A325 Fasteners Sizes
  • Cold Formed A325 Structural Bolts: M2-M24
  • Hot Forged A325 Structural Bolts: M24-M100, 1-1/2” Dia, up to 1100mm lg
  • CNC Machining for M100 / 4” Dia, up to 1500mm lg

Manufacturing M2, M3, M3.5, M4, M5, M6, M8, M10, M12, M14, M16, M18, M20, M22, M24, M27, M30, M33, M36, M42, M45, M48 to M160 and Custom Metric ASTM A325 Structural Bolts

A325 Type 1 Bolts Size Metric
  • Dia: M10 – M110
  • Length: 12 – 1200MM
ASTM A325 Hex Bolts Size Inch
  • Dia: 1/2″ – 4.0″
  • Length: 1/2″ – 52″
Standard Manufacturer of ASTM A325 Structural Bolts as per IS, ANSI, ASTM, DIN, ISO, JIS, GB, ASME, BS, UNI, CSN, EU, IFI, PN, and all International Standards

  • ANSI B 18.2.4 2M
  • ANSI B 28.2.4 1M
  • ANSI – American National Standards Institute
  • GB/T5783, GB/T5782, GB5783
  • American ASME
  • Indian IS
  • International ISO
  • American SAE
  • German DIN
  • Spanish CSN
  • British BS
  • Italian UNI
  • Polish PN
  • European EU
ASTM A325 Structural Bolts Length 3 mm to 200 mm
Grade A325 Bolts & Screws US Threads METRIC, BSW, BSF, Unified national coarse (UNC), Unified national fine (UNF), Unified national extra fine (UNEF), UNJC and UNJF threads, UNK threads, UNR threads, Constant-pitch threads
ASTM A325 Structural Bolts UTS – Unified Thread Standard UNC, UNF, NPT, UNS, UNEF, NPTF
ASTM A325 Bolts Head drive Phillips/Slot, Phillips, Slotted, Six-Lobe, etc

A325 Structural Bolts Coating

Bolt Specification

F2329 Hot Dip Galvanizing

B695 Mechanical Galvanizing

F1136 Zinc/ Aluminum (Geomet)

F2833 Zinc/ Aluminum

A325

Approved

Class 55

Grade 3

Grade 1

F1852

N.A.

Class 55

N.A.

N.A.

A490

N.A.

N.A.

Grade 3

Grade 1

F2280

N.A.

N.A.

N.A.

N.A.

*Other coatings may be used on 120ksi/A325 fasteners depends upon purchaser and user.

N.A. – Not Approved

Tensile Strength Of A325 Hex Bolt

 

 

120 ksi – A325 (Hex) & F1852 (Twist-Off)

150 ksi – A490 (Hex) & F2280 (Twist-Off)

Size

Stress Area in ²

Tensile minimum lbf

Proof Load minimum lbf

Proof Load minimum lbf

Tensile minimum lbf

Tensile maximum lbf

Proof Load minimum lbf

Proof Load minimum

1/2″

0.142

17,050

12,050

13,050

21,300

24,600

17,050

18,500

5/8″

0.226

27,100

19,200

20,800

33,900

39,100

27,100

29,400

3/4″

0.334

40,100

28,400

30,700

50,100

57,800

40,100

43,400

7/8″

0.462

55,450

39,250

42,500

69,300

79,950

55,450

60,100

1″

0.606

72,700

51,500

55,700

90,900

104,850

72,700

78,800

1-1/8″

0.763

91,600

64,900

70,250

114,450

132,000

91,600

99,200

1-1/4″

0.969

116,300

82,400

89,200

145,350

167,650

116,300

126,000

1-3/8″

1.155

138,600

98,200

106,300

173,250

199,850

138,600

150,200

1-1/2″

1.105

168,600

119,500

129,300

210,750

243,100

168,600

182,600

Above values based on

120,000psi

85,000psi

92,000psi

150,000psi

173,000psi

120,000psi

130,000psi

Source: ASTM F3125-15

A325 Structural Bolt Weight Chart

Length of A325 Bolt

Bolt Diameter

1⁄2″

5⁄8″

3⁄4″

7⁄8″

1″

11⁄8″

11⁄4″

13⁄8

11⁄2

1

16.5

29.4

47.0

11⁄4

17.8

31.3

49.6

74.4

104

11⁄2

19.2

33.1

52.2

78

109

148

197

13⁄4

20.5

35.3

55.3

81.9

114

154

205

261

333

2

21.9

37.4

58.4

86.1

119

160

212

270

344

21⁄4

23.3

39.8

61.6

90.3

124

167

220

279

355

21⁄2

24.7

41.7

64.7

94.6

130

174

229

290

366

23⁄4

26.1

43.9

67.8

98.8

135

181

237

300

379

3

27.4

46.1

70.9

103

141

188

246

310

391

31⁄4

28.8

48.2

74

107

146

195

255

321

403

31⁄2

30.2

50.4

77.1

111

151

202

263

332

416

33⁄4

31.6

52.5

80.2

116

157

209

272

342

428

4

33

54.7

83.3

120

162

216

280

353

441

41⁄4

34.3

56.9

86.4

124

168

223

289

363

453

41⁄2

35.7

59

89.5

128

173

230

298

374

465

43⁄4

37.1

61.2

92.7

133

179

237

306

384

478

5

38.5

63.3

95.8

137

184

244

315

395

490

51⁄4

39.9

65.5

98.9

141

190

251

324

405

503

51⁄2

41.2

67.7

102

146

196

258

332

416

515

53⁄4

42.6

69.8

105

150

201

265

341

426

527

6

44

71.9

108

154

207

272

349

437

540

61⁄4

74.1

111

158

212

279

358

447

552

61⁄2

76.3

114

163

218

286

367

458

565

63⁄4

78.5

118

167

223

293

375

468

577

7

80.6

121

171

229

300

384

479

589

71⁄4

82.8

124

175

234

307

392

489

602

71⁄2

84.9

127

179

240

314

401

500

614

73⁄4

87.1

130

183

246

321

410

510

626

8

89.2

133

187

251

328

418

521

639

81⁄4

192

257

335

427

531

651

81⁄2

196

262

342

435

542

664

83⁄4

444

552

676

9

453

563

689

Per inch

Adder

5.5

8.6

12.4

16.9

22.1

28

34.4

42.5

49.7

F436 Round Washers

2.1

3.6

4.8

7

9.4

11.3

13.8

16.8

20

Above weights are for plain finish ASTM A325 Bolts with nuts. A325 Galvanized Bolts will add less than one half of one percent (>0.5%).

Weight (lbs.) per hundred

Torque Chart Of A325 Galvanized Bolt

Size of A325 Bolt

TPI

Tension

Tightening Torque Range (ft lbs) (Min – Max)

Min

Max

Galv+Waxed

Plain

1⁄2

13

12,000

14,000

50 – 58

100 – 117

5⁄8

11

19,000

23,000

99 – 120

198 – 240

3⁄4

10

28,000

34,000

175 – 213

350 – 425

7⁄8

9

39,000

47,000

284 – 343

569 – 685

1

8

51,000

61,000

425 – 508

850 – 1,017

11⁄8

7

64,000

77,000

600 – 722

1,200 – 1,444

11⁄4

7

81,000

98,000

844 – 1,021

1,687 – 2,042

13⁄8

6

97,000

117,000

1,111 – 1,341

2,223 – 2,681

11⁄2

6

118,000

143,000

1,475 – 1,788

2,950 – 3,575

ASTM F3125 Type And Grades

Grade

Min Strength, Tensile Stress

Type

Bolt Style

A325

120ksi min

1 or 3

Heavy Hex Head

A325M

830MPa min

1 or 3

Heavy Hex Head

F1852

120ksi min

1 or 3

Twist-Off/TC

A490

150-173ksi

1 or 3

Heavy Hex Head

A490M

1040MPa

1 or 3

Heavy Hex Head

F2280

150ksi

1 or 3

Twist-Off/TC

  • Type 1 – 120ksi – carbon, alloy, carbon boron, or alloy boron steel
  • Type 1 – 150ksi – alloy or alloy boron steel
  • Type 3 – weathering Steel
Bolt Specification F2329 Hot Dip Galvanizing B695 Mechanical Galvanizing F1136 Zinc/ Aluminum (Geomet) F2833 Zinc/ Aluminum
A325 Approved Class 55 Grade 3 Grade 1
F1852 N.A. Class 55 N.A. N.A.
A490 N.A. N.A. Grade 3 Grade 1
F2280 N.A. N.A. N.A. N.A.

*Other coatings may be used on 120ksi/A325 fasteners depends upon purchaser and user.

N.A. – Not Approved

Dimensions Of ASTM A325 Heavy Hex Structural Bolts

Bolt Diameter

Body Diameter Max (D)

Width Across Flats (F)

Corners Width (C)

Height (H)

Thread Length (T)

Max

Min

Basic

Max

Min

Max

Min

Basic

Max

Min

Basic

1/2

0.515

0.482

7/8

0.875

0.850

1.010

0.969

5/16

0.323

0.302

1.00

5/8

0.642

0.605

1-1/16

1.062

1.031

1.227

1.175

25/64

0.403

0.378

1.25

3/4

0.768

0.729

1-1/4

1.250

1.212

1.443

1.383

15/32

0.483

0.455

1.38

7/8

0.895

0.852

1-7/16

1.438

1.394

1.660

1.589

35/64

0.563

0.531

1.50

1

1.022

0.976

1-5/8

1.625

1.575

1.876

1.796

39/64

0.627

0.591

1.75

1-1/8

1.149

1.098

1-13/16

1.812

1.756

2.093

2.002

11/16

0.718

0.658

2.00

1-1/4

1.277

1.223

2

2.00

1.938

2.309

2.209

25/32

0.813

0.749

2.00

1-3/8

1.404

1.345

2-3/16

2.188

2.119

2.526

2.416

27/32

0.878

0.810

2.25

1-1/2

1.531

1.470

2-3/8

2.375

2.300

2.742

2.622

15/16

0.974

0.902

2.25

A325 Heavy Hex Bolt Tolerance Of Length

Diameter of Bolt

Bolt Lengths Thru 6″

Bolt Lengths Over 6″

1/2″

-0.12

-0.19

5/8″

-0.12

-0.25

3/4″

-0.19

-0.25

7/8″

-0.19

-0.25

1″

-0.19

-0.25

1-1/8″

-0.25

-0.25

1-1/4″

-0.25

-0.25

1-3/8″

-0.25

-0.25

1-1/2″

-0.25

-0.25

ASTM F3125 Grade A325 Bolt Tensile Strength

 

 

120 ksi – A325 (Hex Bolt) & F1852 (Twist-Off)

150 ksi – A490 (Hex Bolt) & F2280 (Twist-Off)

Bolt Dia

Stress Area in ²

Tensile Strength min lbf

Proof Load min lbf

Proof Load min lbf

Tensile Strength min lbf

Tensile max lbf

Proof Load min lbf

Proof Load min

1/2″

0.142

17,050

12,050

13,050

21,300

24,600

17,050

18,500

5/8″

0.226

27,100

19,200

20,800

33,900

39,100

27,100

29,400

3/4″

0.334

40,100

28,400

30,700

50,100

57,800

40,100

43,400

7/8″

0.462

55,450

39,250

42,500

69,300

79,950

55,450

60,100

1″

0.606

72,700

51,500

55,700

90,900

104,850

72,700

78,800

1-1/8″

0.763

91,600

64,900

70,250

114,450

132,000

91,600

99,200

1-1/4″

0.969

116,300

82,400

89,200

145,350

167,650

116,300

126,000

1-3/8″

1.155

138,600

98,200

106,300

173,250

199,850

138,600

150,200

1-1/2″

1.105

168,600

119,500

129,300

210,750

243,100

168,600

182,600

Values are based on

120,000psi

85,000psi

92,000psi

150,000psi

173,000psi

120,000psi

130,000psi

A325 Type 1 Hex Nuts Dimensions

View torque specs & shear strength of ASTM A325 Bolts, best price of Grade A325 Fasteners in Mumbai, India

ASTM F3125 Grade A325 Heavy Hex Nut Dimensions in mm

ISO ASTM A325 Hex Nut NB

Across Corners

MAX Thickness

MIN Thickness

MAX Across Flats

MIN Across Flats

M 8

14.38

6.8

6.44

13

12.73

M 10

17.77

8.4

8.04

16

15.73

M 12

20.03

10.8

10.37

18

17.73

M 14

23.35

12.8

12.1

21

20.67

M 16

26.75

14.8

14.1

24

23.67

M 18

29.56

15.8

15.1

27

26.16

M 20

32.95

18

16.9

30

29.16

M 22

37.29

19.4

18.1

34

33

M 24

39.55

21.5

20.2

36

35

M 27

45.2

23.8

22.5

41

40

M 30

50.85

26.6

24.3

46

45

M 33

55.37

28.7

27.4

50

49

M 36

60.79

31

29.4

55

53.8

M 39

66.44

33.4

31.8

60

58.8

M 42

71.3

34

32.4

65

63.1

M 45

76.95

36

34.4

70

68.1

M 48

82.6

38

39.4

75

73.1

M 52

88.25

42

40.4

80

78.1

M 56

93.56

45

43.4

85

82.8

M 60

99.21

48

46.4

90

87.8

M 64

104.86

51

49.1

95

92.8

M 68

110.51

54

52.1

100

97.8

M 72 x 6

116.16

58

56.1

105

102.8

M 76 x 6

121.81

61

59.1

110

107.8

M 80 x 6

127.46

64

62.1

115

112.8

A325 Type 1 Hex Nuts Dimensions

View torque specs & shear strength of ASTM A325 Bolts, best price of Grade A325 Fasteners in Mumbai, India

ASTM F3125 Grade A325 Heavy Hex Nut Dimensions in mm

ISO ASTM A325 Hex Nut NB

Across Corners

MAX Thickness

MIN Thickness

MAX Across Flats

MIN Across Flats

M 8

14.38

6.8

6.44

13

12.73

M 10

17.77

8.4

8.04

16

15.73

M 12

20.03

10.8

10.37

18

17.73

M 14

23.35

12.8

12.1

21

20.67

M 16

26.75

14.8

14.1

24

23.67

M 18

29.56

15.8

15.1

27

26.16

M 20

32.95

18

16.9

30

29.16

M 22

37.29

19.4

18.1

34

33

M 24

39.55

21.5

20.2

36

35

M 27

45.2

23.8

22.5

41

40

M 30

50.85

26.6

24.3

46

45

M 33

55.37

28.7

27.4

50

49

M 36

60.79

31

29.4

55

53.8

M 39

66.44

33.4

31.8

60

58.8

M 42

71.3

34

32.4

65

63.1

M 45

76.95

36

34.4

70

68.1

M 48

82.6

38

39.4

75

73.1

M 52

88.25

42

40.4

80

78.1

M 56

93.56

45

43.4

85

82.8

M 60

99.21

48

46.4

90

87.8

M 64

104.86

51

49.1

95

92.8

M 68

110.51

54

52.1

100

97.8

M 72 x 6

116.16

58

56.1

105

102.8

M 76 x 6

121.81

61

59.1

110

107.8

M 80 x 6

127.46

64

62.1

115

112.8

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