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Location:Home > Products Standards
Products Standards
GBT1228
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Bolt dimension  GB/T 1228

d

12

16

20

22

24

27

30

s

21

27

34

36

41

46

50

K

7.5

10

12.5

14

15

17

18.7

L

35~75

45~130

50~160

55~220

60~240

65~260

70~260

KNTensile Load   


M12

M16

M20

M22

M24

M27

M30

Bolt Hardness

8.8s

70~86.8

130~162

203~252

251~312

293~364

381~473

466~518

HRC24~HRC31

10.9s

87.7~104.5

163~195

255~304

315~376

367~438

477~569

583~696

HRC33~HRC39

Nut dimension  GB/T 1229

d

12

16

20

22

24

27

30

S

21

27

34

36

41

46

50

M

12.3

17.1

20.7

23.6

24.2

27.6

30.7

E

22.8

29.6

37.3

39.6

45.2

50.9

55.4

 

KN)  Load holding


M12

M16

M20

M22

M24

M27

M30

Nut Hardness

8H

70

130

203

251

293

381

466

HRB96~HRC22

10H

87.7

163

255

315

367

477

583

HRB98~HRC28

 

 Washer dimension  GB/T 1230

d

12

16

20

22

24

27

30

d1

13

17

21

23

25

28

31

d2

25

33

40

42

47

52

56

h

3

4

4

5

5

5

5

 

 High Strength Connection Accessories Construction Axial Force

D

M16

M20

M22

M24

M27

M30

8.8S KN

75

120

150

170

225

275

10.9S KN

110

170

210

250

320

390


 

Mechanical property

σb

N/mm²

σ0.2

N/mm²

δ5

%

Ψ

%

ak

J/cm²

K

Conefficient of forgue

̅k

σn~1

1040~1240

940

10

42

59

0.110~0.150

0.01

  

 Calculation method of bolt length

d

12

16

20

22

24

27

30

L1

25

30

35

40

45

50

55


LBolt length=Connecting plate thickness+L1

L1=nut thickness+2×washer thickness+(2~3)thred pitch 

 

  

You may also be interested in
  • GB/T-3632
  • GB/T 10433-2002 ISO13918
  • GBT1228
  • ASMEB18.2.1
  • Copyright Hebei Jinan Standard Component Co.,Ltd. mainly products:Arc stud welding machine, High Strength Torsional shea..., High strength bolts with lar..., Steel Structural TS Bolt, Steel Structural Hex Bolt, AWS D1.1, ISO13918, BS5400, JIS B 1198, Shear Stud Connector, Shear connectors, High strength hex bolt nut and washers.
    Products Standards: GB/T-3632 | GB/T 10433-2002 ISO13918 | GBT1228 | ASMEB18.2.1 |
    Website: http://www.jnfasteners.com http://www.shear-stud.com http://www.shear-connectors.com http://www.high-strength-nuts-bolts.com